Specifications

7-30
Reference Guide
Model No.
Running Head
WAN Card User Screens and Settings WAN Card
4. If there is no redundant WAN card in the appropriate slot, the only option that will
appear is
n/a
.
5. Selection of GROUP is a two-step process. After identifying the group number (1-4),
the user must select the secondary group (A, B or C).
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.
MODE
In cross-connect systems, Mode automatically defaults to
xcon
.
FRAME
The Frame setting toggles the frame type from
crc
(Cyclic Redundancy Check, 4th level) to
d-frm
(Double Frame).
TS 16
The TS 16 setting changes the signaling usage of slot 16 for
cas
(Channel Associated
Signaling),
ccs
(Common Channel Signaling) or
nos
(No Signaling). In the first two options,
time slot 16 is used to carry signaling information for all channels on the E1. If
nos
is selected,
then time slot 16 becomes available for user data.
EVEN BIT
Setting the Even Bit parameter for
inv
will cause the system to invert every even bit in every
DS0 time slot. This setting should only be used if the entire E1 stream is composed of PCM
voice, to ensure minimum-ones density.
AIS/ALM
The AIS/ALM (Alarm Indication Signal/Alarm) setting, allows the user to specify the type of
“keep-alive” signal that the system will generate on one E1 should the other fail. After
GROUP is selected, the two options for this setting are
none
and
tcodr
(for transcoder
operations).