Carrier Access SNMP manual FXS Backplate Switches, FXS Backplate LEDs

FXS Voice Channel Monitoring and Testing

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.

8.7.2FXS Backplate LEDs

Table 8-3

LED	Condition
State
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	AB2 in trunk processing
YELLOW
S
All LEDs	Unsupported signaling option selected
flash RED

9/24/01 8-11