Cisco 6160 Reference guide

CHAPTER
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4
Installing a Cisco 6160 Without a POTS Splitter
Configuration
This chapter provides installation procedures for installing a Cisco 6160 without a POTS splitter for
xDSL data traffic.
Note The installation procedures in this chapter apply to a Cisco 6160 system shipped with the individual
hardware components preinstalled. For information about installing or replacing field-replaceable units
(FRUs) in the Cisco 6160 chassis, see Chapter 6, “Upgrading and Maintaining the Cisco 6160 System.”
Warning Only trained and qualified personnel should be allowed to install, replace, or service this equipment.
Caution Before you begin the installation procedures, read the entire chapter for important information and
safety warnings.
Note Before installing and cabling the equipment, be aware of standard safety practices and the hazards
involved in working with electrical circuitry to prevent accidents. See the “Safety Requirements” section
on page 2-1 for all cautions and warnings that you need to ensure a safe and hazard-free installation.
To see translations of the warnings that appear in this publication, refer to the Regulatory Compliance
and Safety Information for the Cisco 6160 System document that accompanied this product.
Note See the “Cisco 6160 Without a POTS Splitter Configuration” section on page 1-4 for more information
about configuration components.

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Chapter 4 Installing a Cisco 6160 Without a POTS Splitter Configuration
Installation Checklist
4.1 Installation Checklist
When you install a Cisco 6160 without a POTS splitter configuration, be sure that you follow the
installation procedures in the proper sequence. Table 4-1 is a checklist of the installation steps in the
order in which they should occur. Detailed installation instructions are located in the sections following
Table 4-1.
Caution Proper ESD protection is required whenever you handle Cisco equipment. Installation and maintenance
personnel should be properly grounded by means of grounding straps to eliminate the risk of ESD
damage to the equipment. Equipment is subject to ESD damage whenever it is removed from the chassis.
4.2 Installation Procedures
The following sections detail the installation procedures for a Cisco 6160 without a POTS
splitter configuration.
Table 4-1 Installation Checklist—Cisco 6160 Without POTS Splitter Configuration
Check Installation Procedure
1. Stabilize and measure the rack space.
2. Install the Cisco 6160 chassis in the rack.
3. Install blank faceplates in the open line card slots.
4. Ground the Cisco 6160 chassis.
5. Attach the Cisco 6160 power connections.
6. Connect the alarm contacts (optional).
7. Connect the BITS clock (optional).
8. Connect the Cisco 6160 chassis to the MDF.1
1. MDF = main distribution frame
9. Apply power to the system.
10. Connect the subtending host chassis to the subtended node chassis.
11. Connect the NI-2 card(s) to the network.
12. Connect the Ethernet to the management network.
13. Connect a console terminal.
14. Connect the auxiliary port (optional).
15. Complete the initial configuration.

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4.2.1 Stabilize and Measure the Rack Space
For the rack to remain stable, you must install your Cisco 6160 system components from the bottom to
the top of the rack. Before you install any of the components, calculate the total rack space required to
install your system. The required rack space depends on the number of Cisco 6160 chassis that you plan
to use. The number of chassis increases if you plan to install a subtended network.
Note See Table 2-2 on page 2-13 to determine the total rack space necessary for your configuration.
Warning To prevent bodily injury when mounting or servicing this unit in a rack, you must take special
precautionstoensurethatthesystemremainsstable.Thefollowing guidelines are provided toensure
your safety:
—This unit should be mounted at the bottom of the rack if it is the only unit in the rack.
—When mounting this unit in a partially filled rack, load the rack from the bottom to the top with the
heaviest component at the bottom of the rack.
—If the rack is provided with stabilizing devices, install the stabilizers before mounting or servicing
the unit in the rack.
Warning Two people are required to lift the chassis. Grasp the chassis underneath the lower edge and lift with
both hands. To prevent injury, keep your back straight and lift with your legs, not your back.
If you plan to expand your system to include more chassis in the future, allow space in the rack for
additions during the initial installation, keeping in mind the weight distribution and stability of the rack.
4.2.2 Install the Cisco 6160 Chassis
Complete the following steps to install the Cisco 6160 chassis:
Warning Two people are required to lift the chassis. Grasp the chassis underneath the lower edge and lift with
both hands. To prevent injury, keep your back straight and lift with your legs, not your back.
Step 1 Connect a grounding strap to the ESD grounding jack. See the “Preventing Electrostatic Discharge
Damage” section on page 2-8 for the ESD grounding jack location on the Cisco 6160 chassis.
Step 2 Check the ear brackets on the sides of the chassis and reinstall them, if necessary. Ear brackets can be
installed in two ways:
•Mid-mount, as shown in Figure 4-1—The ear brackets are installed in this position in the factory.
•Front mount, as shown in Figure 4-2.

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Figure 4-1 Mid-Mount Option for Ear Brackets
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Figure 4-2 Front Mount Option for Ear Brackets
Step 3 Carefully lift the chassis from the bottom and place it in position in the rack.
Step 4 Use four mounting screws and a Phillips-head screwdriver to bolt the Cisco 6160 in the rack.
Step 5 Repeat Step 2 through Step 4 for each Cisco 6160 chassis as necessary.
4.2.3 Install the Blank Faceplates
Blank faceplates should occupy any empty line card slots in Cisco 6160 chassis. Blank faceplate
installation is similar to line card installation.
Warning Blank faceplates and cover panels serve three important functions: they prevent exposure to
hazardous voltages and currents inside the chassis; they contain electromagnetic interference (EMI)
that might disrupt other equipment; and they direct the flow of cooling air through the chassis. Do not
operate the system unless all cards, faceplates, and covers are in place.
Complete the following steps to install blank faceplates in the Cisco 6160:
Step 1 Vertically align the blank faceplate edges with the guides at the top and bottom of the slot.
Step 2 Lift up on the ejector lever and gently apply pressure to the bottom of the faceplate while pushing the
blank faceplate into the slot.
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Step 3 Push on the faceplate to fully seat the blank faceplate.
Step 4 Press down on the ejector lever to secure the faceplate.
4.2.4 Ground the Cisco 6160
This section describes two ways to ground the Cisco 6160 chassis.
•Ground the Cisco 6160 Using a Grounding Lug, page 4-6
•Ground the Cisco 6160 from the Power Terminal Block Connector, page 4-8
4.2.4.1 Ground the Cisco 6160 Using a Grounding Lug
Warning When you are installing or replacing the Cisco 6160 chassis, the ground connection must always be
made first and disconnected last.
Note The grounding lug is not provided by Cisco. Use either a 5/8-inch or 3/4-inch lug to ground the
Cisco 6160 chassis.
To ensure adequate earth ground for the system, complete the following steps to ground the Cisco 6160
chassis using a grounding lug:
Step 1 Verify that power in the direct current (DC) circuit is off.
Step 2 Measure enough wire to connect the Cisco 6160 to the grounding point at your site or to the rack.
Note See Table 2-4 for wire specifications.
Step 3 Use a wire stripper to remove the casing from both ends of the grounding wire. The manufacturer of the
grounding lug might have a specific recommendation on the length of wire to be stripped.
Step 4 Insert the stripped end of the grounding wire into the open end of the grounding lug. Be careful not to
leave any wire strands outside the lug.
Step 5 Use the crimping tool to compress the lug onto the wire.
Step 6 Verify the quality of the crimp by inspecting it and tugging gently on the wire.

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Step 7 Locate the three grounding holes on the Cisco 6160 side panel. Figure 4-3 shows how to ground the
Cisco 6160 chassis using a grounding lug.
Figure 4-3 Grounding the Cisco 6160 Chassis Using the Grounding Lug—Backplane View
Step 8 Match the holes in the grounding lug to the appropriately spaced pair of grounding holes on the side of
the chassis. Use the top two holes for a 5/8-inch lug. Use the bottom two holes for a 3/4-inch lug.
Step 9 Insert the screws through the holes in the lug and the chassis.
Step 10 Use a Phillips-head screwdriver to tighten the screws and secure the grounding lug firmly to the chassis.
Step 11 Connect the other end of the grounding wire to an appropriate grounding point at your site or to the rack
(see Figure 4-3). To connect the grounding wire to the rack, complete the following steps:
a. Remove all paint or oxidation from the rack at the point of the grounding connection.
b. Use a 3/16-inch flat-head screwdriver to loosen the grounding screw on the rack.
c. Connect the wire to a ring lug (large enough for the rack screw to fit through).
d. Use a 3/16-inch flat-head screwdriver and the screw to attach the ring lug to the rack.
e. Tighten the grounding screw on the rack over the ring lug.
Step 12 Repeat Step 1 through Step 11 for each Cisco 6160 chassis being installed.
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4.2.4.2 Ground the Cisco 6160 from the Power Terminal Block Connector
Warning When you are installing or replacing the Cisco 6160 chassis, the ground connection must always be
made first and disconnected last.
To ensure adequate earth ground for the system, complete the following steps to attach the grounding
wire to the power terminal block connector on the Cisco 6160 backplane:
Step 1 Verify that power in the DC circuit is off.
Step 2 Measure enough wire to connect the Cisco 6160 to the grounding point at your site or to the rack.
Note See Table 2-4 for wire specifications.
Step 3 Use a wire stripper to remove the casing from both ends of the grounding wire.
Step 4 Identify the correct power terminal block on the backplane of the Cisco 6160. The PWR 1 connector is
used if you have a primary power entry module (PEM) installed in the chassis. The PWR 2 connector is
used if you have a secondary (redundant) PEM installed in the chassis. Figure 4-4 shows the location of
the PWR 1 and PWR 2 power terminal block connectors.

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Figure 4-4 Cisco 6160 Backplane
1PWR 1—Power terminal block connector. 5Connectors JC1 through JC5.
2BRKR 1—A terminal block connector used to wire alarm relays to external alarms. 6I/O card connectors (P3 and P9).
3PWR 2—Power terminal block connector. Use if a secondary (redundant) PEM is installed. 7Connectors JC6 through JC11.
4
BRKR 2—A terminal block connector used to wire
alarm relays to external alarms. Use if a secondary
(redundant) PEM is installed.
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Step 5 Use a flat-head screwdriver and a counterclockwise motion to open the grounding terminal connector on
the power terminal block. This step ensures that the correct opening is presented for the wires. (See
Figure 4-5.)
Figure 4-5 Positioning the Power and Ground Terminals to Accept Wires
Step 6 Insert one end of the grounding wire into the grounding receptacle, which is the bottom receptacle in the
power terminal block connector (Callout 3 in Figure 4-6). The stripped part of the wire must be fully
inserted into the terminal block so that no bare wire is exposed.
Figure 4-6 Inserting the Grounding and Power Wires into the Power Terminal Block Connector
Step 7 Verify that no wire strands are left outside the connector.
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Step 8 Use the flat-head screwdriver and a clockwise motion to tighten the ground screw in the power terminal
block connector. Pull gently on the wire to ensure that it is held firmly in place. Figure 4-7 shows how
to ground the Cisco 6160 chassis from the power terminal block connector.
Figure 4-7 Grounding the Cisco 6160 Chassis from the Power Terminal Block Connector—Backplane
View
Step 9 Connect the other end of the grounding wire to an appropriate grounding point at your site or to the rack.
(see Figure 4-7). To connect the grounding wire to the rack, complete the following steps:
a. Remove all paint or oxidation from the rack at the point of the grounding connection.
b. Use a 3/16-inch flat-head screwdriver to loosen the grounding screw on the rack.
c. Connect the wire to a ring lug (large enough for the rack screw to fit through).
d. Use a 3/16-inch flat-head screwdriver and the screw to attach the ring lug to the rack.
e. Tighten the grounding screw on the rack over the ring lug (see Figure 4-7).
Step 10 If you are connecting two power sources to the Cisco 6160 system, repeat Step 1 through Step 9 for the
second power terminal block.
Step 11 Repeat Step 1 through Step 10 for each Cisco 6160 chassis being installed.
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4.2.5 Attach the Cisco 6160 Power Connections
Caution To prevent the system from powering up, do not install the fuses at this time. If the fuses are already
installed in the fuse and alarm panel, remove them. You can replace the fuses after the system is installed
and connected.
Note For full power redundancy, each terminal block must be connected to a separate power source. If you do
not require power redundancy, you can wire a single terminal block, or connect both terminal blocks to
a single power source.
Do not power the components in the rack by chaining them together.
Warning The illustration shows the DC power supply terminal block. Wire the DC power supply as illustrated.
The proper wiring sequence is ground to ground, positive to positive, and negative to negative. The
ground wire must always be connected first and disconnected last. The fuse and alarm panel and
wires are not provided by Cisco.
Complete the following steps to connect power to the system:
Step 1 Verify that power in the DC circuit is off.
Step 2 Identify the correct power terminal block on the backplane of the Cisco 6160. The PWR 1 connector is
used if you have a primary PEM installed in the chassis. The PWR 2 connector is used if you have a
secondary (redundant) PEM installed in the chassis. Figure 4-4 shows the location of the PWR 1 and
PWR 2 power terminal block connectors.
Step 3 Use a flat-head screwdriver and a counterclockwise motion to open the positive and negative terminal
connectors on the power terminal block.This step ensures that the correct opening is presented for the
wires. (See Figure 4-8.)
Figure 4-8 Positioning the Power and Ground Terminals to Accept Wires
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Step 4 Insert the battery return wire from the first external power source into the receptacle labeled +(positive)
on the appropriate power terminal block (Callout 2 in Figure 4-9). The stripped part of the wire must be
fully inserted so that no bare wire is exposed.
Figure 4-9 Inserting the Grounding and Power Wires into the Power Terminal Block Connector
Step 5 Verify that no wire strands are left outside the connector.
Step 6 Use a flat-head screwdriver and a clockwise motion to tighten the terminal screw over the wire.
Step 7 Insert the power lead from the first battery –48VDC power source into the receptacle labeled –(negative)
on the appropriate power terminal block (Callout 1 in Figure 4-9). The stripped part of the wire must be
fully inserted so that no bare wire is exposed.
Step 8 Verify that no wire strands are left outside the connector.
Step 9 Use a flat-head screwdriver and a clockwise motion to tighten the terminal screw over the wire.
Step 10 If you are connecting a second power source, repeat Step 2 through Step 9 to wire the second power
terminal block.
Step 11 Thread tie wraps through the small cutouts in the side of the chassis next to each terminal block and tie
down the wires using the tie wraps.
Step 12 Repeat Step 1 through Step 11 for each Cisco 6160 chassis being installed.
1Power lead wire connection 3Grounding wire connection
2Battery return wire connection
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4.2.6 Connect the Alarm Contacts
Note This step is optional.
Complete the following steps to connect an external alarm device to the wire-wrap pins on the I/O card:
Note The relay for the circuit-breaker trip alarm is wired through the small green terminal blocks (BRKR 1
and BRKR 2) on the chassis backplane and not through the wire-wrap connector.
Caution Use extreme caution when wire-wrapping the pin connections for the STAT_ALARMS and
BITS_A/BITS_B pins. Incorrect wire connections will cause damage to the equipment.
Step 1 Measure wire long enough to connect the appropriate pin to the external alarm device. See Table 2-4 for
wire specifications.
Note See the “I/O Cards” section on page 1-43 for an illustration of the pinouts that are located on the
I/O card. See Appendix C, “Connector and Pinout Specifications,” for pinout descriptions.
Step 2 Use a wire stripper to remove the casing from both ends of the wire.
Step 3 Use a wire-wrapping tool to attach the wire to the appropriate pin.
Step 4 Use a wire-wrapping tool to attach the other end of the wire used in Step 3 to the external alarm device.
Step 5 Repeat Step 1 through Step 4 to wire wrap all necessary pins.
Step 6 Repeat Step 1 through Step 5 for each Cisco 6160 chassis being installed.

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4.2.7 Connect the BITS Clock Contacts
Note This step is optional.
Complete the following steps to connect the BITS clock to the wire-wrap pins on the I/O card:
Caution Use extreme caution when wire-wrapping the pin connections for the STAT_ALARMS and
BITS_A/BITS_B pins. Incorrect wire connections will cause damage to the equipment.
Step 1 Measure wire long enough to connect the appropriate pin on the I/O card to the BITS clock. See
Table 2-4 for wire specifications.
Note See the “I/O Cards” section on page 1-43 for an illustration of the pinouts that are located on the
I/O card. See Appendix C, “Connector and Pinout Specifications,” for pinout descriptions.
Step 2 Use a wire stripper to remove the casing from both ends of the wire.
Step 3 Use a wire-wrapping tool to attach the wire to the appropriate pins for the slot in which the primary NI-2
card is installed.
Note The BITS pins on I/O cards are slot specific. BITS_A pins are assigned to slot 11 and BITS_B
pins are assigned to slot 10. Each BITS clock input is independent and terminated at 100 ohms.
Step 4 Use a wire-wrapping tool to attach the other end of the wire used in Step 3 to the BITS clock.
Step 5 Repeat Step 1 through Step 4 to wire wrap the appropriate pins for a secondary (redundant) NI-2 card.
Step 6 Repeat Step 1 through Step 5 for each Cisco 6160 chassis being installed.
4.2.8 Connect the Cisco 6160 to the MDF
Use the cables described in Table 2-4 to connect the eleven Champ connectors located on the Cisco 6160
backplane to the MDF. This connection is for xDSL data flow between the Cisco 6160 system and
the MDF.
Note For additional information about the Cisco 6160 backplane connectors, see the “Backplane” section on
page 1-11.

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4.2.9 Apply the Power
Complete the following steps to apply power to the Cisco 6160 system:
Caution If the power connections are improperly made and power is applied while the cards are installed, the
cards and chassis could be damaged.
Step 1 Verify that the power connections from the Cisco 6160 terminal block(s) to the power source are wired
as shown in Figure 4-9.
Step 2 Apply power to the system using one of the following methods:
•Install the fuses in the fuse and alarm panel.
•Reinsert the fuses in the fuse and alarm panel, if you removed them in the “Attach the Cisco 6160
Power Connections” section on page 4-12.
•Turn on the breakers in the fuse and alarm panel.
Step 3 Check the polarity of the –48VDC connections to each chassis by attaching a voltmeter with the minus
lead on –48RTN and the plus lead on –48V_A or –48V_B. Ensure that the meter reads between –40VDC
and –60VDC. If your voltmeter shows a positive voltage, the power inputs might be reversed. If the
voltmeter shows a negative voltage that is out of the –40VDC to –60VDC range, check the power supply
for failure or check for a blown fuse in the fuse and alarm panel.
Step 4 Set the circuit breaker on the PEM to the ON (1) position.
If the power is properly connected, the INPUT OK LED on the front of the PEM(s) will be green. You
will also hear the blowers start to turn. A slight delay in blower startup is normal. If these events do not
occur, repeat Step 1 through Step 4.
Step 5 Repeat Step 1 through Step 4 for each Cisco 6160 chassis being installed.
4.2.10 Connect the Subtending Host Chassis to the Subtended Node Chassis
If you are installing a subtended network, this section provides installation procedures for the following
subtending connections:
•DS3 Subtending Connections, page 4-17
•OC-3c Subtending Connections, page 4-19
•T1 or T1 IMA Subtending Connections, page 4-20
If you are not installing a subtended network, proceed to the “Connect the NI-2 Card to the Network”
section on page 4-22.
Tip Cisco recommends that you label each data cable at both ends to identify its destination.

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Note For more information on a subtended network configuration, see the “Subtended Network
Configuration” section on page 1-6.
The term subtending refers to the host chassis, and subtended refers to the downstream chassis in a
subtended network.
Cisco does not provide the cables for the subtending connections. See Table 2-4 for cable specifications.
4.2.10.1 DS3 Subtending Connections
Complete the following steps to connect the DS3 subtending connections:
Note For more information about DS3 subtending connections, see the “Subtended Network Configuration
with DS3/2DS3 or OC-3c/2DS3 NI-2 Cards” section on page 1-9.
Step 1 Verify that the DS3/2DS3 or OC-3c/2DS3 NI-2 card is installed in slot 10 (or slot 11, if a secondary NI-2
card is installed for redundancy) of the Cisco 6160 chassis to ensure that the DS3 NI-2 card connections
are active.
Note See the “Redundancy in Subtended Configurations” section on page 1-42 for more information
about redundant configurations.
Step 2 On the subtending host chassis backplane, attach one end of a coaxial cable to the TX BNC connector
for DS3 Port 2 on the I/O card.
Note See Table 2-4 for cable specifications. See Figure 1-19 or Figure 1-23 for DS3 port connector
locations.

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Figure 4-10 shows the cabling for a DS3 subtended network configuration.
Figure 4-10 Cabling for DS3 Subtended Network Configuration
Step 3 On the first subtended node chassis backplane, attach the end of the coaxial cable used in Step 2 to the
RX BNC for DS3 Port 1 on the I/O card.
Step 4 On the subtending host chassis backplane, attach one end of a coaxial cable to the RX BNC connector
for DS3 Port 2 on the I/O card.
Step 5 On the first subtended node chassis backplane, attach the end of the coaxial cable used in Step 4 to the
TX BNC connector for DS3 Port 1 on the I/O card.
Step 6 On the subtending host chassis backplane, attach one end of a coaxial cable to the TX BNC connector
for DS3 Port 3 on the I/O card.
Step 7 On the first subtended node chassis backplane, attach the end of the coaxial cable used in Step 6 to the
RX BNC for DS3 Port 1 on the I/O card.
Step 8 On the subtending host chassis backplane, attach one end of a coaxial cable to the RX BNC connector
for DS3 Port 3 on the I/O card.
TX
RX
TX
RX
TX
RX
PORT 1
PORT 2
PORT 3
60V,1A MAX
P1
P5
P4
P3
P2
TX
RX
TX
RX
TX
RX
PORT 1
PORT 2
PORT 3
60V,1A MAX
P1
P5
P4
P3
P2
TX
RX
TX
RX
TX
RX
PORT 1
PORT 2
PORT 3
60V,1A MAX
P1
P5
P4
P3
P2
Receive
Transmit
Receive
Transmit
Receive
Transmit
Receive
Transmit
54016
Network
1st subtended
node chassis
Subtending
host chassis
2nd subtended
node chassis

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Step 9 On the first subtended node chassis backplane, attach the end of the coaxial cable used in Step 8 to the
TX BNC connector for DS3 Port 1 on the I/O card.
Step 10 Repeat Step 2 through Step 9 for each subtending host chassis.
4.2.10.2 OC-3c Subtending Connections
Complete the following steps to connect the OC-3c subtending connections:
Warning Do not stare into the beam or view it directly with optical instruments.
Note For more information about OC-3c subtending connections, see the “Subtended Network Configuration
with OC-3c/OC-3c NI-2 Cards” section on page 1-10.
Step 1 Verify that the OC-3c/OC-3c NI-2 card is installed in slot 10 (or slot 11, if a secondary NI-2 card is
installed for redundancy) of the Cisco 6160 chassis to ensure that the OC-3c NI-2 card connections are
active.
Note See the “Redundancy in Subtended Configurations” section on page 1-42 for more information
about redundant configurations.
Step 2 Attach a cable to the SBTD 2 RX optical interface connector on the subtending host chassis
OC-3c/OC-3c NI-2 card to the TRNK 1 TX optical interface connector on the subtended node chassis
OC-3c/OC-3c NI-2 card.
Figure 4-11 shows the cabling for an OC-3c subtended network configuration.
Note See Table 2-4 for cable specifications. See Figure 1-17 for OC-3c connector locations.
Figure 4-11 Cabling for OC-3c Subtended Network Configuration
Step 3 Attach a cable to the SBTD 2 TX optical interface connector on the subtending host chassis
OC-3c/OC-3c NI-2 card to the TRNK 1 RX optical interface connector on the subtended node chassis
OC-3c/OC-3c NI-2 card. (See Figure 4-11.)
48509
1st subtended
chassis
Up to 10 more
subtended
chassis
Network
trunk
Cisco 6160
2nd subtended
chassis
Cisco 6160Cisco 6160
Top
chassis
Cisco 6160 Cisco 6160 Cisco 6160

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Step 4 To establish APS link redundancy repeat Step 2 and Step 3 for a secondary OC-3c/OC-3c NI-2 card.
Step 5 Repeat Step 1 through Step 4 for each subtending host chassis.
4.2.10.3 T1 or T1 IMA Subtending Connections
Complete the following steps to connect the TI or TI IMA subtending connections:
Note For more information about T1 or T1 IMA subtending connections, see the “Subtended Network
Configuration with DS3+T1/E1 IMA NI-2 Cards” section on page 1-7.
Step 1 Verify that the DS3+T1/E1 IMA NI-2 card is installed in slot 10 (or slot 11, if a secondary NI-2 card is
installed for redundancy) and the DS3/2DS3+8xT1 IMA I/O card is installed on the chassis backplane.
Note See the “Redundancy in Subtended Configurations” section on page 1-42 for more information
about redundant configurations.
Step 2 Connect one end of an RJ-48 cable to one of the RJ-48c receptacles on the DS3/2DS3+8xT1 IMA I/O
card located on the subtending host chassis backplane.
Figure 4-12 shows the cabling for a T1 or T1 IMA subtended network configuration.
Note See Table 2-4 for cable specifications. See Figure 1-19 for T1 interface locations.