Specifications

WAN Ports 5-3
WAN ports WAN port User Screens and Settings
Table 5-2. T1 Screen Option Settings and Defaults
STATE
In the standby state, the WAN port is electrically disconnected from the external network. Set
State setting to stdby (standby) when setting up your WAN links, then changes it to actv
(active) when starting normal operations.If the WAN is in loopback due to a command from
a remote device, the loopback will be dropped if you switch to stdby.
FORMAT
The Frame setting toggles the frame format to be used on the WAN link so that it matches the
frame format used by the T1 carrier. Set the format Parameter based on the type of frame
format the T1 carrier requires. The options are d4 (normal superframe) or esf (extended
superframe).
LINE CODE
The Line Code setting matches the Line code used by the T1 interface to that used by the T1
network. Set the Line Code to the type of Line Code used. The options are ami and b8zs.
LINE LEN
The Line Length setting adjusts the T1 power level to compensate for the distance the signal
must travel before it reaches the first T1 line repeater or other device. For the DS1 interface,
the options are
110, 220, 330, 440, 550, and 660 feet or 0, 7.5, 15, and 22.5 dB.
Parameter User Options Notes Default
STATE stdby actv stdby
FORMAT d4 esf esf
LINE CODE ami b8zs b8zs
LINE LEN 110 220 330 440 550 660 0DB 7.5DB 15DB 22.5DB 110
LINE LB off on off
LOCAL LB off on off
LB GEN off llb plb nlb off
LB DET w/to off on w/to
EER THRHD 10e-4 through 10e-9 none 10e-4