Carrier Access Access Bank II SNMP - Manual (Page 84)

FXS Voice Channel Monitoring and Testing
9/24/01 8-11
The channel test switches on the FXS-ID back plate can be used to send a 4 second continuous ring-
ing voltage to the tip and ring pair of each FXS voice channel. You can check the operation of an
individual voice channel by attaching a test telephone to the Tip and Ring pair of a particular channel
at the punchdown block or RJ-11 Harmonica, then switching ON the appropriate channel test switch
to test that channel.
Figure 8-4: FXS-ID Back Plate Controls and LED Indicators
8.7.1 FXS Backplate Switches
Channel Test (12 per FXS card) - Sends four seconds of ringing to voice channel and four seconds of
ringback to the T1 channel. After ringing, it will busy out the T1 channel and the voice channel.
TP Busy/Idle (1 per FXS card) - selects busy or idle on tip-ground relays during trunk processing.
8.7.2 FXS Backplate LEDs
Table 8-3
LED
State
Condition
OFF Idle state (FXS ground start, all E&M
settings
GREEN Idle stae (normal FXS loop-start
operation): Incoming seixure (ground
start operaion or E&M conversion)
YELLOW Call in progress
RED Outgoing line seizure
All LEDs
YELLOW
S AB2 in trunk processing
All LEDs
flash RED Unsupported signaling option selected