Cisco AS5800 Manual page 19

Step 2 For T1 cabling, attach the network end of your CT1 cables to your external
network.
Step 3 For E1 cabling, attach the network end of your CE1 cables to your network
termination (NT1) device.
Warning
Hazardous network voltages are present in WAN ports regardless of whether
power to the unit is OFF or ON. To avoid electric shock, use caution when
working near WAN ports. When detaching cables, detach the end away
from the unit first.
Figure 15 CT1 and CE1 Trunk Card RJ­45 Cable Connections
Warning
The ports labeled "Network Clock," "10BaseT," "Dial Shelf Interconnect,"
"Console," and "Alarms" are safety extra­low voltage (SELV) circuits. SELV
circuits should only be connected to other SELV circuits. Because the E1/T1
circuits are treated like telephone­network voltage, avoid connecting the SELV
circuit to the telephone network voltage (TNV) circuits.
Configuring Cable Length
When you configure your CT1 trunk cards, you must include the distance of the cable
connected to the feature card. To specify this distance, you must use the cablelength
command. No cablelength command is required for CE1 trunk cards.
If you change the cable length when installing and cabling a new trunk card, you need
to specify cable length in your software configuration. The cablelength command is
designed to recognize two basic fixed settings:
• Cable Length Short
• Cable Length Long
Cable Length Short
The following cable length short configurations define the length range (in feet),
between your Network Access Server (NAS) and your repeater. The cablelength
short command includes the following settings:
• 133 feet (0­133 feet)
• 266 feet (134­266 feet)
• 399 feet (267­399 feet)
• 533 feet (400­533 feet)
• 655 feet (534­655 feet)
Note Although you can specify a cable length from 0 to 655 feet, the hardware only
recognizes fixed configuration lengths. For example, if your cable length is 50 feet
between your NAS and your repeater, you should configure your cable length using
the 133­feet setting. If you later change the cable length to 200 feet, you should
reconfigure your cable length using the 266­feet setting.
Cable Length Long
The following cable length long configurations define the length range in gain and
pulse, between your Network Access Server (NAS) and your repeater. The
cablelength long command includes the following gain and pulse arguments:
• gain 26 (26db Gain)