|
Photo img1_001
|
Modem showing RS-232 connector for serial connection to computer and
RJ-11 jack for connection to phone line.
|
|
|
Photo img1_003
|
Computer system with modems, showing serial cable to modem and cable
to phone jack.
|
|
|
Photo img1_010
|
Serial cable to RS-232 connector.
|
|
|
Photo img1_012
|
Dial-up voice line modem, showing RS-232 connector and RJ-45 jacks.
|
|
|
Photo img1_014
|
RS-232 connectors, showing wiring for three-wire connection.
|
|
|
Photo img1_016
|
AUI-to-thinnet adapter, used to connect a NIC with an AUI connector
to a thin Ethernet cable.
|
|
|
Photo img1_017
|
Three computers, all using thin Ethernet; this picture demonstrates
that thin Ethernet can be used to connect computers that are close to
each other with a minimum of cabling.
|
|
|
Photo img1_018
|
Three computers, all using thin Ethernet; this picture demonstrates
that thin Ethernet can be used to connect computers that are close to
each other with a minimum of cabling.
|
|
|
Photo img1_019
|
Punch-down connections for 10Base-T on a patch panel that allows
flexible interconnections between 10Base-T twisted-pair cables.
|
|
|
Photo img1_020
|
Punch-down connections for 10Base-T; using 10Base-T hubs requires
individual cables from all connected computers be brought together,
for example, in a wiring closet.
|
|
|
Photo img1_021
|
Punch-down connection blocks for 10Base-T.
|
|
|
Photo img1_023
|
An AUI-to-10Base-T adapter, used to connect a NIC with an AUI connector
to 10Base-T wiring.
|
|
|
Photo img1_024
|
RS-232 connector with control and data wiring.
|
|
|
Photo img1_025
|
RS-232 connector with control and data wiring.
|
|
|
Photo img1_026
|
10Base-T connector, which plugs into RJ-45 jack.
|
|
|
Photo img1_028
|
AUI-to-thin Ethernet adapter, used to connect a NIC with an AUI connector
to thin Ethernet cabling; the thin Ethernet ends at this connection
with the terminator on the BNC connector.
|
|
|
Photo img1_029
|
10Base-T hub, with 10Base-T cables connecting computers to the hub.
|
|
|
Photo img1_030
|
Using star network topology requires that every computer have a separate
cable connecting it to the hub; there may be many cables running to the
hubs in a star-shaped network.
|
|
|
Photo img1_031
|
AUI-to-thin Ethernet adapter, used to connect a NIC with an AUI connector
to thin Ethernet cabling.
|
|
|
Photo img1_032
|
Punch-down connector blocks for 10Base-T cables.
|
|
|
Photo img1_033
|
Optical fiber cables connected to an ATM switch.
|
|
|
Photo img1_034
|
Optical fiber connections into an ATM NIC; this computer also has
an AUI Ethernet connection just below the orange optical fiber cable.
|
|
|
Photo img1_035
|
Ethernet NIC; the AUI connector is at the right hand side of the picture,
the car plugs into the bus on the backplane at the bottom of the
chassis and the electronics on the NIC transmit and receive data
through the network while the CPU performs other functions.
|
|
|
Photo img1_036
|
|
|
|
Photo img1_037
|
RS-232 cable, showing wiring for RS-232 data and control signals.
|
|
|
Photo img1_038
|
RS-232 cable, showing wiring for RS-232 data and control signals.
|
|
|
Photo img1_039
|
AUI-to-thinnet adapter; this adapter is plugged directly into the
computer's AUI port, eliminating the AUI cable.
|
|
|
Photo img1_040
|
AUI-to-10Base-T adapter; this adapter is plugged directly into the
computer's AUI port, eliminating the AUI cable.
|
|
|
Photo img1_041
|
AUI-to-10Base-T adapter; this adapter is plugged directly into the
computer's AUI port, eliminating the AUI cable.
|
|
|
Photo img1_042
|
Dial-up modem for voice lines.
|
|
|
Photo img1_043
|
The punch-down blocks in this picture connect twisted-pair cables
to the thick cables at the bottom of the picture; each thick cable
contains multiple twisted-pair wires.
|
|
|
Photo img1_044
|
Patch panel for interconnecting 10Base-T cables.
|
|
|
Photo img1_045
|
10Base-T cables connected to a hub.
|
|
|
Photo img1_046
|
10Base-T cables connected to punch-down blocks.
|
|
|
Photo img1_047
|
Dialup modem for voice telephone lines.
|
|
|
Photo img1_048
|
An RS-232 cable tester; each of the RS-232 signals is displayed on
the panel and individual pins from one connector can be patched to
different pins on the other connector to accommodate wiring
mismatches.
|
|
|
Photo img1_049
|
Base-station antenna for a wireless radio-frequency network; this
antenna is attached to a unit that also connects to a wire-based
network and forwards data between the wireless and wire-based networks;
each computer using the wireless network has its own antenna and
special NIC.
|
|
|
Photo img1_051
|
AUI-to-thinnet adapter, used to connect a computer with an
AUI connector to a thin Ethernet cable.
|
|
|
Photo img1_052
|
Plugging a 10Base-T cable into the RJ-45 jack on an
AUI-to-10Base-T adapter.
|
|
|
Photo img1_053
|
Thin Ethernet connector; the T connector attaches directly
to the mating connector on the NIC.
|
|
|
Photo img1_054
|
A thin Ethernet cable with a BNC connector, a thin Ethernet terminator
and a thin Ethernet T connector.
|
|
|
Photo img1_055
|
Thin Ethernet terminator.
|
|
|
Photo img1_056
|
AUI connection multiplexor that attaches multiple computers to an
Ethernet through a single transceiver; AUI cables from several
computers attach to the connection multiplexor and a single AUI
cable attaches the connection multiplexor to the Ethernet through
a transceiver.
|
|
|
Photo img1_057
|
AUI-to-10Base-T adapter, used to connect a computer with an AUI
connector to a 10Base-T cable.
|
|
|
Photo img1_058
|
AUI cable and connector.
|
|
|
Photo img1_059
|
Optical fiber and connectors; the small black covers protect the
end of the connector when the connector is not in use.
|
|
|
Photo img1_060
|
Optical fiber and connectors with protective covers installed; the
cable contains two separate optical fibers, each with its own connector.
|
|
|
Photo img1_061
|
Optical fiber cables connected to an ATM switch; each cable contains
a pair of fibers to provide full-duplex communication between the
switch and the attached computer.
|
|
|
Photo img1_062
|
Optical fiber cables connected to an ATM switch.
|
|
|
Photo img1_063
|
Cable running through conduit; the conduit is used to provide
a path through which multiple cables can be installed
after the building construction is complete.
|
|
|
Photo img1_064
|
|
|
|
Photo img1_065
|
Cables running through conduit; individual cables can be added, replaced
or removed without disturbing other cables or the building walls and
floors.
|
|
|
Photo img1_066
|
Cables running through conduit; individual cables can be added, replaced
or removed without disturbing other cables or the building walls and
floors; one conduit can carry more than one type of cable such as
thick Ethernet, voice telephone, 10Base-T and optical fiber.
|
|
|
Photo img1_067
|
An AUI-to-thinnet adapter used to connect a computer with an AUI
connector to a thin Ethernet cable.
|
|
|
Photo img2_001
|
Modems in a computer center for dial-up modem access to the organization
network.
|
|
|
Photo img2_002
|
Optical fiber patch panel; the optical fibers can be reconnected to
different network components by changing the connection points on
the patch panel.
|
|
|
Photo img2_003
|
Optical fiber patch panel; the optical fibers can be reconnected to
different network components by changing the connection points on
the patch panel.
|
|
|
Photo img2_004
|
Two racks of network components; the rack at the right of the
picture holds optical fiber patch panels; the rack at the left
holds hubs and a router.
|
|
|
Photo img2_005
|
|
|
|
Photo img2_006
|
A rack of network hubs, showing connections to 10Base-T cables.
|
|
|
Photo img2_007
|
Two racks of network components; at the left of the picture are the
back views of optical fiber patch panels and at the right is a
back view of a router and a hub.
|
|
|
Photo img2_008
|
Dial-up modems in an equipment rack.
|
|
|
Photo img2_009
|
Rack containing network hubs and optical fiber adapters; the larger boxes
are 10Base-T hubs and the smaller boxes, with LEDs on the front panel,
are 10Base-T-to-optical fiber converters.
|
|
|
Photo img2_010
|
A network hub that can be configured with multiple internal circuit
boards; each port contains 12 or 24 10Base-T ports.
|
|
|
Photo img2_011
|
Modems in a computer center for dial-up modem access to the organization
network.
|
|
|
Photo img2_012
|
A multiple-port router; this router interconnects 8 10Base-T Ethernets
and an SMDS WAN.
|
|
|
Photo img2_013
|
Computers used to run server applications in a computer center;
these computer provide network disk storage and other client-server
applications.
|
|
|
Photo img2_014
|
Connections on the back of a workstation; there is a 10Base-T
interface at the lower left corner of the workstation.
|
|
|
Photo img2_015
|
Two network hubs in a wiring closet; 10Base-T cables fan out from these
hubs to computers located elsewhere in the building; the hubs are mounted
on the wall of the wiring closet to save space.
|
|
|
Photo img2_016
|
Two network hubs in a wiring closet; with the hubs mounted on the
wall, the closet can be shared with other equipment.
|
|
|
Photo img2_017
|
Punch-down blocks in a wiring closet.
|
|
|
Photo img2_018
|
Network hub in a wiring closet; the 10Base-T cables connected to the
hub can be seen at the right of the picture.
|
|
|
Photo img2_019
|
A network hub, punch-down blocks and other electronic cabling in a wiring closet.
|
|
|
Photo img2_020
|
A serial connection switch that interconnects RS-232 serial cables,
typically between terminals and serial ports on computers.
|
|
|
Photo img2_021
|
A computer with a 10Base-T network connection; the RJ-45 jack
and 10Base-T cable can be seen at the left of the picture.
|
|
|
Photo img2_022
|
A computer electronic circuit card containing the CPU.
|
|
|
Photo img2_023
|
A computer electronic circuit board with four serial connections; the
connectors are at the right side of the picture.
|
|
|
Photo img2_024
|
A network hub at the top of the picture and punch-down blocks.
|
|
|
Photo img2_025
|
An Ethernet NIC; the AUI cable attaches to the blue connector at
the right of the picture.
|
|
|
Photo img3_001
|
A wiring closet containing various patch panels, Ethernet switches and
hubs, and ATM switches.
|
|
|
Photo img3_002
|
Closeups of a Fore ForeRunner ASX-200 ATM switch with both twisted
pair copper and fiber optic connections, and a Fore ForeRunner LE155
ATM switch with 12 twisted pair 155 megabit connections (see photo
img3_001).
|
|
|
Photo img3_003
|
ATM switch with both twisted
pair copper and fiber optic connections, and a Fore ForeRunner LE155
ATM switch with 12 twisted pair 155 megabit connections (see photo
img3_001).
|
|
|
Photo img3_004
|
A closeup of two 3Com 24 port Ethernet switches, a Fore ForeRunner
ASX-200 ATM switch with both twisted pair copper and fiber optic
connections, and a Fore ForeRunner LE155 ATM switch with 12 twisted
pair 155 megabit connections (see photo img3_001).
|
|
|
Photo img3_011
|
A wall outlet with six RJ-45 Ethernet jacks. The jacks are connected
to a patch panel in a wiring closet where they can be turned on or off
and attached to various Ethernet local area networks.
|
|
|
Photo img3_012
|
A wall outlet with six RJ-45 Ethernet jacks. The jacks are connected
to a patch panel in a wiring closet where they can be turned on or off
and attached to various Ethernet local area networks.
|
|
|
Photo img3_013
|
A wall outlet with four unused RJ-45 Ethernet jacks. The jacks are
connected to a patch panel in a wiring closet where they can be turned
on or off and attached to various Ethernet local area networks.
|
|
|
Photo img3_014
|
A wall outlet with four unused RJ-45 Ethernet jacks. The jacks are
connected to a patch panel in a wiring closet where they can be turned
on or off and attached to various Ethernet local area networks.
|
|
|
Photo img3_015
|
The back of a laser printer. The blue cable is a twisted pair Ethernet
cable which connects the printer the the local area network.
|
|
|
Photo img3_016
|
The back of a laser printer. The blue cable is a twisted pair Ethernet
cable which connects the printer the the local area network.
|
|
|
Photo img3_017
|
The back of a laser printer. The blue cable is a twisted pair Ethernet
cable which connects the printer the the local area network.
|
|
|
Photo img3_018
|
The back of a personal computer with an Ethernet network interface
card. The card is located in the far right slot and has connectors for
twisted pair, thick and thin Ethernet type cabling.
|
|
|
Photo img3_019
|
The back of a personal computer with an Ethernet network interface
card. The card is located in the far right slot and has connectors for
twisted pair, thick and thin Ethernet type cabling.
|
|
|
Photo img3_020
|
The back of a personal computer with an Ethernet network interface
card. The card is located in the far right slot and has connectors for
twisted pair, thick and thin Ethernet type cabling.
|
|
|
Photo img3_021
|
An Ethernet network interface card. This card has connectors for three
types of Ethernet cabling. From top to bottom they are twisted pair,
thick, and thin.
|
|
|
Photo img3_022
|
An Ethernet network interface card. This card has connectors for three
types of Ethernet cabling. From top to bottom they are twisted pair,
thick, and thin.
|
|
|
Photo img3_023
|
An ATM interface card for use with twisted pair cabling. The silver
box on the right edge of the card is an RJ-45 connector.
|
|
|
Photo img3_024
|
An ATM interface card for use with twisted pair cabling. The silver
box on the right edge of the card is an RJ-45 connector.
|
|
|
Photo img3_025
|
A Proxim RangeLAN wireless local area network interface card. Also
shown is a table-top antenna which attaches to the interface card.
|
|
|
Photo img3_026
|
A Proxim RangeLAN wireless local area network interface card. Also
shown is a table-top antenna which attaches to the interface card.
|
|
|
Photo img3_027
|
An AirLAN wireless local area network interface card. The white
rectangular object is a wall or ceiling mount antenna which attaches
to the interface.
|
|
|
Photo img3_028
|
An AirLAN wireless local area network interface card. The white
rectangular object is a wall or ceiling mount antenna which attaches
to the interface.
|
|
|
Photo img3_029
|
The front of a Proxim wireless bridge. This device bridges a wireless
Proxim local area network with a standard Ethernet network.
|
|
|
Photo img3_030
|
The front of a Proxim wireless bridge. This device bridges a wireless
Proxim local area network with a standard Ethernet network.
|
|
|
Photo img3_031
|
The back of a Proxim wireless bridge. On the left is an antenna. On
the right is an RJ-45 Ethernet jack. To the left of that is a thin
Ethernet BNC connector.
|
|
|
Photo img3_032
|
The back of a Proxim wireless bridge. On the left is an antenna. On
the right is an RJ-45 Ethernet jack. To the left of that is a thin
Ethernet BNC connector.
|
|
|
Photo img3_033
|
A RangeLAN wireless local area network PCMCIA interface card. The
black object attached to the left of the card is its antenna.
|
|
|
Photo img3_034
|
A RangeLAN wireless local area network PCMCIA interface card. The
black object attached to the left of the card is its antenna.
|
|
|
Photo img3_035
|
A RangeLAN wireless PCMCIA network interface
card. Attached is its wireless tranceiver and antenna.
|
|
|
Photo img3_036
|
A RangeLAN wireless PCMCIA network interface
card. Attached is its wireless tranceiver and antenna.
|
|
|
Photo img3_037
|
An AirLAN wireless LAN PCMCIA interface card. Attached to the card is
the wireless tranceiver and antenna.
|
|
|
Photo img3_038
|
An AirLAN wireless LAN PCMCIA interface card. Attached to the card is
the wireless tranceiver and antenna.
|
|
|
Photo img3_039
|
An in-use Cisco 7000 router with a varity of interfaces. The router
has six AUI Ethernet ports in its leftmost slot to which the six grey
cables connect. It also has four serial ports, to which three grey
serial lines connect. Further right is a single fiber optic ATM
interface identified by the orange cable. To the right of that is a
FDDI interface to which the two light grey fiber optic cables are
connected.
|
|
|
Photo img3_040
|
An in-use Cisco 7000 router with a varity of interfaces. The router
has six AUI Ethernet ports in its leftmost slot to which the six grey
cables connect. It also has four serial ports, to which three grey
serial lines connect. Further right is a single fiber optic ATM
interface identified by the orange cable. To the right of that is a
FDDI interface to which the two light grey fiber optic cables are
connected.
|
|
|
Photo img3_041
|
An in-use Cisco 7000 router with a varity of interfaces. The router
has six AUI Ethernet ports in its leftmost slot to which the six grey
cables connect. It also has four serial ports, to which three grey
serial lines connect. Further right is a single fiber optic ATM
interface identified by the orange cable. To the right of that is a
FDDI interface to which the two light grey fiber optic cables are
connected.
|
|
|
Photo img3_042
|
An in-use Cisco 7000 router with a varity of interfaces. The router
has six AUI Ethernet ports in its leftmost slot to which the six grey
cables connect. It also has four serial ports, to which three grey
serial lines connect. Further right is a single fiber optic ATM
interface identified by the orange cable. To the right of that is a
FDDI interface to which the two light grey fiber optic cables are
connected.
|
|
|
Photo img3_043
|
A wiring closet containing, from top to bottom, three patch panels,
two Ethernet hubs, and an Ethernet switch.
|
|
|
Photo img3_044
|
A wiring closet containing, from top to bottom, three patch panels,
two Ethernet hubs, and an Ethernet switch.
|
|
|
Photo img3_045
|
A closeup of the three Ethernet patch cables. The blue cabling is
twisted pair Ethernet cable.
|
|
|
Photo img3_046
|
On the left three Ethernet patch cables can be seen. Toward the top
and right are conduits which cary various data and telephone cables
throughout the building.
|
|
|
Photo img3_047
|
A wiring closet containing, from top to bottom, three patch panels,
two Ethernet hubs, and an Ethernet switch.
|
|
|
Photo img3_048
|
A closeup of the three Ethernet patch cables. The blue cabling is
twisted pair Ethernet cable.
|
|
|
Photo img3_049
|
Conduits carrying data and voice lines to other buildings on campus.
|
|
|
Photo img3_050
|
A closeup of the three Ethernet patch cables. The blue cabling is
twisted pair Ethernet cable.
|
|
|
Photo img3_051
|
A closeup of the three Ethernet patch cables. The blue cabling is twisted pair Ethernet cable.
|
|
|
Photo img3_052
|
A closeup of the three Ethernet patch cables. The blue cabling is
twisted pair Ethernet cable.
|
|
|
Photo img3_053
|
A closeup of four copper twisted pair to fiber optic converters. These
devices allow a twisted pair network to extend to distances further
than copper twisted pair cabling allows by converting the electrical
signals to optical signals.
|
|
|
Photo img3_054
|
A closeup of four copper twisted pair to fiber optic converters. These
devices allow a twisted pair network to extend to distances further
than copper twisted pair cabling allows by converting the electrical
signals to optical signals.
|
|
|
Photo img3_055
|
A rack holding a dial-in modem pool consisting of 16 modems.
|
|
|
Photo img3_056
|
A rack holding a dial-in modem pool consisting of 16 modems.
|
|
|
Photo img3_057
|
A rack holding a dial-in modem pool consisting of 16 modems.
|
|
|
Photo img3_058
|
Two Ascend Pipeline ISDN modems.
|
|
|
Photo img3_059
|
An Ascend Pipeline ISDN modem.
|
|
|
Photo img3_060
|
An Ascend Pipeline ISDN modem.
|
|
|
Photo img3_061
|
Three 3Com Ethernet switches.
|
|
|
Photo img3_062
|
Three 3Com Ethernet switches.
|
|
|
Photo img3_063
|
The larger device at the bottom is a Cisco 7000 router. On top is a
Fore ForeRunner ASX-200 ATM switch with various twisted pair and
fiber optic connections.
|
|
|
Photo img3_064
|
The larger device at the bottom is a Cisco 7000 router. On top is a
Fore ForeRunner ASX-200 ATM switch with various twisted pair and
fiber optic connections.
|
|
|
Photo img3_065
|
A Fore ForeRunner ASX-200 ATM switch with both twisted pair and
fiber optic connections.
|
|
|
Photo img3_066
|
A Fore ForeRunner ASX-200 ATM switch with both twisted pair and
fiber optic connections.
|
|
|
Photo img3_067
|
A wiring closet containing various patch panels, Ethernet switches and
hubs, and ATM switches.
|
|
|
Photo img3_068
|
A wiring closet containing various patch panels, Ethernet switches and
hubs, and ATM switches.
|
|
|
Photo img3_069
|
A wiring closet containing various patch panels, Ethernet switches and
hubs, and ATM switches.
|
|
|
Photo img3_070
|
A wiring closet containing various patch panels, Ethernet switches and
hubs, and ATM switches.
|
|
|
Photo img3_071
|
A wiring closet containing various patch panels, Ethernet switches and hubs, and ATM switches.
|
|
|
Photo img3_072
|
A wiring closet containing various patch panels, Ethernet switches and
hubs, and ATM switches.
|
|
|
Photo img3_073
|
A wiring closet containing various patch panels, Ethernet switches and
hubs, and ATM switches.
|
|
|
Photo img3_074
|
A wiring closet. From top to bottom this closet contains three patch
panels, two 3Com 24 port Ethernet switches, a Fore ForeRunner ASX-200
ATM switch with both twisted pair copper and fiber optic connections,
and A Fore ForeRunner LE155 ATM switch with 12 twisted pair 155
megabit connections.
|
|
|
Photo img4_001
|
A dial-in pool of 96 modems. The six rectangular devices near the
middle are terminal servers. Each terminal server connects 16 modems
to the local area network.
|
|
|
Photo img4_002
|
A dial-in pool of 96 modems. The six rectangular devices near the
middle are terminal servers. Each terminal server connects 16 modems
to the local area network.
|
|
|
Photo img4_003
|
A dial-in pool of 96 modems. The six rectangular devices near the
middle are terminal servers. Each terminal server connects 16 modems
to the local area network.
|
|
|
Photo img4_004
|
Closeup of modems in rack with a terminal server below.
|
|
|
Photo img4_005
|
Closeup of modems in rack with a terminal server below.
|
|
|
Photo img4_006
|
The rear of a terminal server. A serial line connects each modem to a
terminal server.
|
|
|
Photo img4_007
|
The rear of a terminal server. A serial line connects each modem to a
terminal server.
|
|
|
Photo img4_008
|
Rear view of a dial-in pool of 96 modems (see photo img4_001).
|
|
|
Photo img4_009
|
Rear view of a dial-in pool of 96 modems (see photo img4_001).
|
|
|
Photo img4_010
|
The back of two FDDI concentrators (hubs) (see photo img4_013). The
top concentrator has 10 ports while the bottom one has 20.
|
|
|
Photo img4_011
|
The back of two FDDI concentrators (hubs) (see photo img4_013). The
top concentrator has 10 ports while the bottom one has 20.
|
|
|
Photo img4_012
|
The back of two FDDI concentrators (hubs) (see photo img4_013). The
top concentrator has 10 ports while the bottom one has 20.
|
|
|
Photo img4_013
|
The front of two FDDI concentrators (hubs). The
top concentrator has 10 ports while the bottom one has 20.
|
|
|
Photo img4_014
|
The front of two FDDI concentrators (hubs). The
top concentrator has 10 ports while the bottom one has 20.
|
|
|
Photo img4_015
|
The front of two FDDI concentrators (hubs). The
top concentrator has 10 ports while the bottom one has 20.
|
|
|
Photo img4_016
|
The front of two FDDI concentrators (hubs). The
top concentrator has 10 ports while the bottom one has 20.
|
|
|
Photo img4_017
|
A Cisco 7500 router. The top slot is occupied by the routers'
processor board. Third slot from the top on the left is a fiber optic
ATM interface which is concealed by a dust cover. The slot below
contains 6 Ethernet AUI connectors.
|
|
|
Photo img4_018
|
A Cisco 7500 router. The top slot is occupied by the routers'
processor board. Third slot from the top on the left is a fiber optic
ATM interface which is concealed by a dust cover. The slot below
contains 6 Ethernet AUI connectors.
|
|
|
Photo img4_019
|
A Cisco 7500 router. The top slot is occupied by the routers'
processor board. Third slot from the top on the left is a fiber optic
ATM interface which is concealed by a dust cover. The slot below
contains 6 Ethernet AUI connectors.
|
|
|
Photo img4_020
|
A Cisco 7500 router. The top slot is occupied by the routers'
processor board. Third slot from the top on the left is a fiber optic
ATM interface which is concealed by a dust cover. The slot below
contains 6 Ethernet AUI connectors.
|
|
|
Photo img4_021
|
A Cisco 7500 router. The top slot is occupied by the routers'
processor board. Third slot from the top on the left is a fiber optic
ATM interface which is concealed by a dust cover. The slot below
contains 6 Ethernet AUI connectors.
|
|
|
Photo img4_022
|
A Cisco 7500 router. The top slot is occupied by the routers'
processor board. Third slot from the top on the left is a fiber optic
ATM interface which is concealed by a dust cover. The slot below
contains 6 Ethernet AUI connectors.
|
|
|
Photo img4_023
|
A Cisco 2514 Router. On the left are two Ethernet AUI connectors.
|
|
|
Photo img4_024
|
A Cisco 2514 Router. On the left are two Ethernet AUI connectors.
|
|
|
Photo img4_025
|
A Cisco 2514 Router. On the left are two Ethernet AUI connectors.
|
|
|
Photo img4_026
|
A Cisco 2514 Router. On the left are two Ethernet AUI connectors.
|
|
|
Photo img4_027
|
A Cisco 2514 Router. On the left are two Ethernet AUI connectors.
|
|
|
Photo img4_028
|
A Cisco 2514 Router. On the left are two Ethernet AUI connectors.
|
|
|
Photo img4_029
|
A Cisco 2514 Router. On the left are two Ethernet AUI connectors.
|
|
|
Photo img4_030
|
A Cisco Catalyst 3000 Ethernet switch. This switch has 16 10 megabit
twisted pair Ethernet jacks along the bottom. Near the top one can
also see two 100 megabit fiber optic ports covered by dust caps.
|
|
|
Photo img4_031
|
A Cisco Catalyst 3000 Ethernet switch. This switch has 16 10 megabit
twisted pair Ethernet jacks along the bottom. Near the top one can
also see two 100 megabit fiber optic ports covered by dust caps.
|
|
|
Photo img4_032
|
A Cisco Catalyst 3000 Ethernet switch. This switch has 16 10 megabit
twisted pair Ethernet jacks along the bottom. Near the top one can
also see two 100 megabit fiber optic ports covered by dust caps.
|
|
|
Photo img4_033
|
A Cisco Catalyst 3000 Ethernet switch. This switch has 16 10 megabit
twisted pair Ethernet jacks along the bottom. Near the top one can
also see two 100 megabit fiber optic ports covered by dust caps.
|
|
|
Photo img4_034
|
A Cisco Catalyst 5505 switch. At the top are two 100 megabit
fiber optic ports with dust covers. In the slot below are two 155
megabit fiber optic ATM interfaces, also concealed by dust covers. The
last occupied slot contains 24 10 megabit twisted pair Ethernet
ports. The remaining two slots are empty and available for expansion.
|
|
|
Photo img4_035
|
A Cisco Catalyst 5505 switch. At the top are two 100 megabit
fiber optic ports with dust covers. In the slot below are two 155
megabit fiber optic ATM interfaces, also concealed by dust covers. The
last occupied slot contains 24 10 megabit twisted pair Ethernet
ports. The remaining two slots are empty and available for expansion.
|
|
|
Photo img4_036
|
A Cisco Catalyst 5505 switch. At the top are two 100 megabit
fiber optic ports with dust covers. In the slot below are two 155
megabit fiber optic ATM interfaces, also concealed by dust covers. The
last occupied slot contains 24 10 megabit twisted pair Ethernet
ports. The remaining two slots are empty and available for expansion.
|
|
|
Photo img4_037
|
A Cisco Catalyst 5505 switch. At the top are two 100 megabit
fiber optic ports with dust covers. In the slot below are two 155
megabit fiber optic ATM interfaces, also concealed by dust covers. The
last occupied slot contains 24 10 megabit twisted pair Ethernet
ports. The remaining two slots are empty and available for expansion.
|
|
|
Photo img4_038
|
The front of a 45 megabit DSU showing its display and controls.
|
|
|
Photo img4_039
|
The front of a 45 megabit DSU showing its display and controls.
|
|
|
Photo img4_040
|
The front of a 45 megabit DSU showing its display and controls.
|
|
|
Photo img4_041
|
The front of a 45 megabit DSU showing its display and controls.
|
|
|
Photo img4_042
|
The back of a 45 megabit DSU. The left two of the three round coaxial
ports are for the DS3 transmit and receive lines.
|
|
|
Photo img4_043
|
The back of a 45 megabit DSU. The left two of the three round coaxial
ports are for the DS3 transmit and receive lines.
|
|
|
Photo img4_044
|
Three Cisco LightStream 1010 ATM Switches. Each has 24 OC-3 ports to
which the orange fiber optic cables connect. Each also has two higher
speed OC-12 ports connecting the three switches in a ring. The OC-12
ports are at the right of each machine.
|
|
|
Photo img4_045
|
Three Cisco LightStream 1010 ATM Switches. Each has 24 OC-3 ports to
which the orange fiber optic cables connect. Each also has two higher
speed OC-12 ports connecting the three switches in a ring. The OC-12
ports are at the right of each machine.
|
|
|
Photo img4_046
|
Three Cisco LightStream 1010 ATM Switches. Each has 24 OC-3 ports to
which the orange fiber optic cables connect. Each also has two higher
speed OC-12 ports connecting the three switches in a ring. The OC-12
ports are at the right of each machine.
|
|
|
Photo img4_047
|
Three Cisco LightStream 1010 ATM Switches. Each has 24 OC-3 ports to
which the orange fiber optic cables connect. Each also has two higher
speed OC-12 ports connecting the three switches in a ring. The OC-12
ports are at the right of each machine.
|
|
|
Photo img4_048
|
A Fore F1000 ATM switch with 24 OC-3 ports.
|
|
|
Photo img4_049
|
A Fore F1000 ATM switch with 24 OC-3 ports.
|
|
|
Photo img4_050
|
A Fore F1000 ATM switch with 24 OC-3 ports.
|
|
|
Photo img4_051
|
A Fore F1000 ATM switch with 24 OC-3 ports.
|
|
|
Photo img4_052
|
A Fore F1000 ATM switch with 24 OC-3 ports.
|
|
|
Photo img4_053
|
A Cisco Catalyst 5500 Ethernet Switch. The blue cables are twisted
pair 10/100 megabit Ethernet. The orange lines are 10 or 100 megabit
fiber optic connections.
|
|
|
Photo img4_054
|
A Cisco Catalyst 5500 Ethernet Switch. The blue cables are twisted
pair 10/100 megabit Ethernet. The orange lines are 10 or 100 megabit
fiber optic connections.
|
|
|
Photo img4_055
|
A Cisco Catalyst 5500 Ethernet Switch. The blue cables are twisted
pair 10/100 megabit Ethernet. The orange lines are 10 or 100 megabit
fiber optic connections.
|
|
|
Photo img4_056
|
A Cisco Catalyst 5500 Ethernet Switch. The blue cables are twisted
pair 10/100 megabit Ethernet. The orange lines are 10 or 100 megabit
fiber optic connections.
|
|
|
Photo img4_057
|
The front of a fiber optic patch panel. Fiber optic cabling from outside
the building terminates at the back of this passive patch panel where
it is connected with fiber cables within the building (the orange
cables).
|
|
|
Photo img4_058
|
The front of a fiber optic patch panel. Fiber optic cabling from outside
the building terminates at the back of this passive patch panel where
it is connected with fiber cables within the building (the orange
cables).
|
|
|
Photo img4_059
|
Detail of the front of the fiber patch panel. Fiberoptic cabling from
outside the building terminates at the back of this passive patch
panel where it is connected with fiber cables within the building (the
orange cables).
|
|
|
Photo img4_060
|
Detail of the front of the fiber patch panel. Fiberoptic cabling from
outside the building terminates at the back of this passive patch
panel where it is connected with fiber cables within the building (the
orange cables).
|
|
|
Photo img4_061
|
Detail of the front of the fiber patch panel.
|
|
|
Photo img4_062
|
Detail of the front of the fiber patch panel.
|
|
|
Photo img4_063
|
The back of the fiber patch panel. Fiber optic cables originating
outside the building terminate on connectors in this passive fiber
patch panel. Fiber optic cabling within the building attaches to the
reverse sides of the connectors on the front side of the panel.
|
|
|
Photo img4_064
|
The back of the fiber patch panel. Fiberoptic cables originating
outside the building terminate on connectors in this passive fiber
patch panel. Fiberoptic cabling within the building attaches to the
reverse sides of the connectors on the front side of the panel.
|
|
|
Photo img4_065
|
The back of the fiber patch panel. Fiberoptic cables originating
outside the building terminate on connectors in this passive fiber
patch panel. Fiberoptic cabling within the building attaches to the
reverse sides of the connectors on the front side of the panel.
|
|
|
Photo img4_066
|
The back of the fiber patch panel. Fiberoptic cables originating
outside the building terminate on connectors in this passive fiber
patch panel. Fiberoptic cabling within the building attaches to the
reverse sides of the connectors on the front side of the panel.
|
|
|
Photo img4_067
|
The grey conduits carry black bundles of fiber optic cables from other
buildings to this one.
|
|
|
Photo img4_068
|
The grey conduits carry black bundles of fiber optic cables from other
buildings to this one.
|
|
|
Photo img4_069
|
The grey conduits carry black bundles of fiber optic cables from other
buildings to this one.
|
|
|
Photo img4_070
|
Two types of fiber optic cable connectors. On the left are examples of
the ST type primarily used for 10 megabit connections. The newer
SC type connector seen on the right is used for 100 megabit or
higher bandwidth fiber optic connections.
|
|
|
Photo img4_071
|
Two types of fiber optic cable connectors. On the left are examples of
the ST type primarily used for 10 megabit connections. The newer
SC type connector seen on the right is used for 100 megabit or
higher bandwidth fiber optic connections.
|
|
|
Photo img4_072
|
Two types of fiber optic cable connectors. On the left are examples of
the ST type primarily used for 10 megabit connections. The newer
SC type connector seen on the right is used for 100 megabit or
higher bandwidth fiber optic connections.
|
|
|
Photo img4_073
|
Closeup of the ST type fiber optic cable connectors (see photo
img4_072).
|
|
|
Photo img4_074
|
Closeup of the SC type fiber optic cable connectors (see photo
img4_072).
|
|
|
Photo img4_075
|
Two examples of PCMCIA fax/modem/Ethernet adapters.
|
|
|
Photo img4_076
|
Two examples of PCMCIA fax/modem/Ethernet adapters.
|
|
|
Photo img4_077
|
Two examples of PCMCIA fax/modem/Ethernet adapters.
|
|
|
Photo img4_078
|
The back side of an Ethernet repeater. On the left is an RJ-45 twisted
pair connector. In the middle is a thin Ethernet coaxial connector.
|
|
|
Photo img4_079
|
The back side of an Ethernet repeater. On the left is an RJ-45 twisted
pair connector. In the middle is a thin Ethernet coaxial connector.
|
|
|
Photo img4_080
|
The front of an Ethernet repeater shows various status indicators.
|
|
|
Photo img4_081
|
A twelve port twisted pair Ethernet hub. About to be plugged in is an
Ethernet cable with an RJ-45 connector.
|
|
|
Photo img4_082
|
A twelve port twisted pair Ethernet hub. About to be plugged in is an
Ethernet cable with an RJ-45 connector.
|
|
|
Photo img4_083
|
An example of thin Ethernet coaxial cabling. On the left is an end
connector. On the right is a T splitter which would attach a host to
the Ethernet bus.
|
|
|
Photo img4_084
|
An example of thin Ethernet coaxial cabling. On the left is an end
connector. On the right is a T splitter which would attach a host to
the Ethernet bus.
|
|
|
Photo img4_085
|
The end of a twisted pair Ethernet cable with an RJ-45 connector.
|
|
|
Photo img4_086
|
The end of a twisted pair Ethernet cable with an RJ-45 connector.
|
|
|
Photo img4_087
|
The back of a workstation with two types of network interfaces. On the
bottom is a twisted pair Ethernet tranceiver. The yellow cable
attached to the tranceiver's RJ-45 port connects the workstation to
the local Ethernet. The tranceiver is attached to the workstation's
AUI port. The orange fiber optic cables with SC-type connectors attach
to the hosts ATM interface. The orange cable on the left carries data
transmitted by this host to an ATM switch. The one on the right
carries data from the switch to this host.
|
|
|
Photo img4_088
|
The back of a workstation with two types of network interfaces. On the
bottom is a twisted pair Ethernet tranceiver. The yellow cable
attached to the tranceiver's RJ-45 port connects the workstation to
the local Ethernet. The tranceiver is attached to the workstation's
AUI port. The orange fiber optic cables with SC-type connectors attach
to the hosts ATM interface. The orange cable on the left carries data
transmitted by this host to an ATM switch. The one on the right
carries data from the switch to this host.
|
|
|
Photo img4_089
|
The back of a workstation with two types of network interfaces. On the
bottom is a twisted pair Ethernet tranceiver. The yellow cable
attached to the tranceiver's RJ-45 port connects the workstation to
the local Ethernet. The tranceiver is attached to the workstation's
AUI port. The orange fiber optic cables with SC-type connectors attach
to the hosts ATM interface. The orange cable on the left carries data
transmitted by this host to an ATM switch. The one on the right
carries data from the switch to this host.
|
|
|
Photo img4_090
|
The back of a workstation with two types of network interfaces. On the
bottom is a twisted pair Ethernet tranceiver. The yellow cable
attached to the tranceiver's RJ-45 port connects the workstation to
the local Ethernet. The tranceiver is attached to the workstation's
AUI port. The orange fiber optic cables with SC-type connectors attach
to the hosts ATM interface. The orange cable on the left carries data
transmitted by this host to an ATM switch. The one on the right
carries data from the switch to this host.
|
|
|
Photo img4_091
|
A Fore ASX-100 ATM switch (historic). This switch has four ports to
which hosts are connected. Each port consists of two connectors, one
for transmitting data and one for receiving data. One can see three
free slots in which additional ports can be added. A twisted pair
tranceiver on the lower left also attaches the switch the an Ethernet
network.
|
|
|
Photo img4_092
|
A Fore ASX-100 ATM switch (historic). This switch has four ports to
which hosts are connected. Each port consists of two connectors, one
for transmitting data and one for receiving data. One can see three
free slots in which additional ports can be added. A twisted pair
tranceiver on the lower left also attaches the switch the an Ethernet
network.
|
|
|
Photo img4_093
|
Closeup of the ports on a Fore ASX-100 ATM switch (see photo img4_091).
|
|
|
Photo img4_094
|
Closeup of the ports on a Fore ASX-100 ATM switch (see photo img4_091).
|
|
|
Photo img4_095
|
A 10/100 megabit twisted pair Ethernet interface in a personal
computer. The link indicator is illuminated indicating that
the interface is connected to an active Ethernet network. The 10
Mbit/s indicator is lit, while the 100 Mbit/s indicator is
not. This shows that the network is operating in the slower 10 megabit
mode.
|
|
|
Photo img4_096
|
A 10/100 megabit twisted pair Ethernet interface in a personal
computer. The link indicator is illuminated indicating that
the interface is connected to an active Ethernet network. The 10
Mbit/s indicator is lit, while the 100 Mbit/s indicator is
not. This shows that the network is operating in the slower 10 megabit
mode.
|
|
|
Photo img4_097
|
A 10/100 megabit twisted pair Ethernet interface in a personal
computer. The link indicator is illuminated indicating that
the interface is connected to an active Ethernet network. The 10
Mbit/s indicator is lit, while the 100 Mbit/s indicator is
not. This shows that the network is operating in the slower 10 megabit
mode.
|
|
|
Photo img4_098
|
An AirLan wireless local area network interface antenna mounted on a
ceiling.
|
|
|
Photo img4_099
|
An AirLan wireless local area network interface antenna mounted on a
ceiling.
|
|
|
Photo img4_100
|
An AirLan wireless local area network interface antenna mounted on a
ceiling.
|
|
|
Photo img4_101
|
A Proxim RangeLAN PCMCIA wireless local area network interface card
being inserted into a laptop computer. The small black piece attached
to the card is its antenna.
|
|
|
Photo img4_102
|
A Proxim RangeLAN PCMCIA wireless local area network interface card
being inserted into a laptop computer. The small black piece attached
to the card is its antenna.
|
|
|
Photo img4_103
|
A PCMCIA modem being inserted into a laptop computer. Attached to the
card is an adaptor which connects the card to a standard RJ-11
telephone line.
|
|
|
Photo img4_104
|
A PCMCIA modem being inserted into a laptop computer. Attached to the
card is an adaptor which connects the card to a standard RJ-11
telephone line.
|
|
|
Photo img4_105
|
A PCMCIA Ethernet interface being inserted into a laptop
computer. Attached to the card is a twisted pair Ethernet cable. One
end of the cable has a standard RJ-45 plug, while the end to which the
card attaches has a proprietary connector.
|
|
|
Photo img4_106
|
A PCMCIA Ethernet interface being inserted into a laptop
computer. Attached to the card is a twisted pair Ethernet cable. One
end of the cable has a standard RJ-45 plug, while the end to which the
card attaches has a proprietary connector.
|
|
|
Photo img4_107
|
A standard desk fax modem. In the middle are seen two RJ-11 telephone
jacks. One connects the modem to a telephone line while the other is
empty. On the far right is a serial line connecting the modem to a
computer.
|
|
|
Photo img4_108
|
A standard desk fax modem. In the middle are seen two RJ-11 telephone
jacks. One connects the modem to a telephone line while the other is
empty. On the far right is a serial line connecting the modem to a
computer.
|
|
|
Photo img4_109
|
The front of a standard desk fax modem showing its various indicators.
|
|
|
Photo img4_110
|
The front of a Motorola cable modem showing its various indicators.
|
|
|
Photo img4_111
|
The back of a Motorla cable modem. On the left is a standard coaxial
television cable connector. The modem sends and receives data over the
existing cable system infrastructure through this connection. On the
right is an RJ-45 Ethernet jack which connects the modem to a
computer.
|
|
|
Photo img5_001
|
Motorola CyberSurfer Wave cable modem
|
|
|
Photo img5_002
|
Motorola CyberSurfer Wave cable modem
|
|
|
Photo img5_003
|
Antennas for satellite data transmission at PanAmSat's Napa, CA,
ground facility
|
|
|
Photo img5_004
|
Antenna and equipment control room for PanAmSat's Napa, CA, ground
facility
|
|
|
Photo img6_001
|
The rear of a Cisco 7500 router.
|
|
|
Photo img6_002
|
The front of a Cisco 7500 router.
|
|
|
Photo img6_003
|
A Cisco 2900 XL switch (2924XL-M). The switch has 24 10/100 Mbps
twisted pair Ethernet ports. It also accomdates two optional modules
above. This switch has an optical fiber Ethernet interface installed in
the left module bay and no module on the right.
|
|
|
Photo img6_004
|
The rear of a Cisco Catalyst 8540 MSR switch. This particular switch
is fully redundant with backup processor cards, network interface
cards and power supplies.
|
|
|
Photo img6_005
|
The rear of a Cisco Catalyst 8540 MSR switch. This particular switch
is fully redundant with backup processor cards, network interface
cards and power supplies.
|
|
|
Photo img6_006
|
The front of a Cisco Catalyst 8540 switch.
|
|
|
Photo img6_007
|
The rear of a Cisco Catalyst 6500 switch. This switch includes 12
gigabit Ethernet ports as well as 48 100 Mbps fiber Ethernet
ports. The smaller device on top of the switch is a gigabit Ethernet
extender. The extender allows gigabit Ethernet to be run over
multimode fiber optic cable for up to 2 km. The normal range for
gigabit Ethernet over the same cable is about 500 ft (152 meters).
|
|
|
Photo img6_008
|
The rear of a Cisco Catalyst 6500 switch. This switch includes 12
gigabit Ethernet ports as well as 48 100 Mbps fiber Ethernet
ports. The smaller device on top of the switch is a gigabit Ethernet
extender. The extender allows gigabit Ethernet to be run over
multimode fiber optic cable for up to 2 km. The normal range for
gigabit Ethernet over the same cable is about 500 ft (152 meters).
|
|
|
Photo img6_009
|
The front of a Cisco Catalyst 6500 switch.
|
|
|
Photo img6_010
|
A Cisco Cache Engine 550 web cache (four bottom units). Each web cache
contains two 9.2 GB hard disks. The four units together are intended
to handle up to 45 Mbps of web traffic. A Cisco router (not shown)
redirects web connections to the web caches. The router performs load
balancing among the individual web caches by redirecting web traffic
destined for a particular range of IP addresses to each web cache.
Directly above the caches is a Cisco Catalyst 2900XL switch. On top is
a 3Com 24-port, 4-segment hub.
|
|
|
Photo img6_011
|
A Cisco Cache Engine 550 web cache (four bottom units). Each web cache
contains two 9.2 GB hard disks. The four units together are intended
to handle up to 45 Mbps of web traffic. A Cisco router (not shown)
redirects web connections to the web caches. The router performs load
balancing among the individual web caches by redirecting web traffic
destined for a particular range of IP addresses to each web cache.
Directly above the caches is a Cisco Catalyst 2900XL switch. On top is
a 3Com 24-port, 4-segment hub.
|
|
|
Photo img6_012
|
A Cisco Cache Engine 550 web cache (four bottom units). Each web cache
contains two 9.2 GB hard disks. The four units together are intended
to handle up to 45 Mbps of web traffic. A Cisco router (not shown)
redirects web connections to the web caches. The router performs load
balancing among the individual web caches by redirecting web traffic
destined for a particular range of IP addresses to each web cache.
Directly above the caches is a Cisco Catalyst 2900XL switch. On top is
a 3Com 24-port, 4-segment hub.
|
|
|
Photo img6_013
|
A Cisco Cache Engine 550 web cache (four bottom units). Each web cache
contains two 9.2 GB hard disks. The four units together are intended
to handle up to 45 Mbps of web traffic. A Cisco router (not shown)
redirects web connections to the web caches. The router performs load
balancing among the individual web caches by redirecting web traffic
destined for a particular range of IP addresses to each web cache.
Directly above the caches is a Cisco Catalyst 2900XL switch. On top is
a 3Com 24-port, 4-segment hub.
|
|
|
Photo img6_019
|
A 24-port 10/100 Mbps Ethernet interface board for a Cisco Catalyst
5000 switch. The circuitry at the left of the photo handles the
transmission and reception of Ethernet frames. The circuitry at the
right communicates with the rest of the Catalyst 5000 switch. The
circuitry in the middle of the board performs the frame switching
function.
|
|
|
Photo img6_020
|
A 24-port 10/100 Mbps Ethernet interface board for a Cisco Catalyst
5000 switch. The circuitry at the left of the photo handles the
transmission and reception of Ethernet frames. The circuitry at the
right communicates with the rest of the Catalyst 5000 switch. The
circuitry in the middle of the board performs the frame switching
function.
|
|
|
Photo img6_021
|
An ATM uplink interface board for a Cisco Catalyst 5000 switch.
|
|
|
Photo img6_022
|
An ATM uplink interface board for a Cisco Catalyst 5000 switch.
|
|
|
Photo img6_023
|
A Supervisor III board for a Cisco Catalyst 5000 switch. The
Supervisor board performs high-level control and operating system
tasks, not the swichting itself.
|
|
|
Photo img6_024
|
A Supervisor III board for a Cisco Catalyst 5000 switch. The
Supervisor board performs high-level control and operating system
tasks, not the swichting itself.
|
|
|
Photo img6_026
|
The black cables contain fiber optic tables. The cables enter the building through conduits that run from other buildings.
|
|
|
Photo img6_027
|
The rear of a fiber optic patch panel. Each bundle of fiber optic
cables is separated into individual fibers that terminate at the patch
panel.
|
|
|
Photo img6_028
|
The front of the patch panel. Orange fiber optic cables attach to the
fibers that come into the building and connect them to the various
switches, routers and other equipment.
|
|
|
Photo img6_029
|
A Fujitsu DSL modem.
|
|
|
Photo img7_001
|
A Cisco 7100 VPN router, which can serve as the
endpoint for site-to-site or remote-to-site
virtual private networks. It can also provide data
encryption, firewall and bandwidth management
functions.
|
|
|
Photo img7_002
|
A Cisco 673 DSL modem.
|
|
|
Photo img7_003
|
A Cisco 12000 GSR (gigabit speed router). The 12000
series routers have a capacity of up to
160 Gbps and can interface to OC-3, OC-12
or gigabit Ethernet.
|
|
|
Photo img7_004
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Cisco Aironet 340 wireless LAN base station and
PC card interface.
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Photo img7_005
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Cisco 340 series wireless LAN products, including
base stations, PC Card interfaces and desktop
computer interfaces.
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Photo img7_006
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Cisco DSL products, including DSLAM and DSL
modem.
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Photo img7_007
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Cisco 15900 Wavelength Router, which uses
DWDM (dense wave-division multiplexing).
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Photo img7_008
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A twisted pair interface card for a Cisco DSLAM.
This device is the modem in the service provider's
DSLAM, typically located in the service
provider's office.
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Photo img7_009
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A Cisco PIX 500 firewall.
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Photo img7_010
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A Cisco IP Phone 7940, which uses VoIP (voice
over IP; also called IP telephony).
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Photo img7_011
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A Cisco 340 wireless LAN interface, which connects
to a desktop computer through a USB interface.
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