Specifications

Reference Guide
7-35
WAN Card WAN Card User Screens and Settings
2. The “LINE CODE” field is set to “auto” and is determined by the HDSL module and
set automatically.
STATE
In the standby state, the WAN port is electrically disconnected from the network. Set this field
to
stdby
(standby) while configuring WAN links, and then change 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
.
MODE
In cross-connect systems, the Mode automatically defaults to (
xcon
).
FORMAT
The Format setting specifies 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) and
esf
(extended
superframe). The same format should be used at both ends of a circuit.
LINE CODE
The Line Code setting matches the Line Code used by the T1 interface. This option is set to
auto
and is determined by the HDSL module.
PULSE
This option is not available at the present time.
n/a
.
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. The Line Length for the
PairGain T1/HDSL defaults to
0
.
SLIP LIM
The Slip Limit defines how many bits of wander the WAN port will tolerate before forcing a
frame slip. The options are
126
bits and
138
bits, which correspond to an older and a more
recent version of the specification, respectively.