Demand test descriptions and error codes - Avaya Support

Incoming Call
1. CO Applies Ringing Voltage
2. PBX Response: Detect ringing current
3. PBX Off-Hook (Answer Message): Close loop
4. CO Response: Trip ringing, provide loop current
5. PBX On-Hook (Drop Message): Open Tip-Ring loop, no loop current
6. CO Response: CO goes to idle state (see Note)
Direct Inward Dialing (DID) (Loop Start)
1. CO Applies Ringing Voltage
2. PBX Response: Detect ringing current and close loop
3. CO Response: Send DTMF digits
4. PBX Response: Acknowledge of Number dialed and open loop
5. PBX Off-Hook (Answer Message): Close loop
6. CO Response: Trip ringing, provide loop current
7. PBX On-Hook (Drop Message): Open Tip-Ring loop, no loop current
8. CO Response: CO goes to idle state (see Note)
Note: CO
Note:
does not normally provide an On-Hook (Disconnect) signal.
Error log entries and recommended actions
Table 88: DIOD-TRK Error Log Entries 1 of 2
Error
Type
Aux
Data
Associated Test Alarm
Level
On/Off
Board
338 Maintenance Alarms for Communication Manager, Media Gateways and Servers
Recommended Action
0 (a) 0 Any Any Any test port sh
15 (b) any Port Audit Update Test (#36)
18 0 busyout trunk grp/mbr WRN release trunk
769 (c) 57392 MAJ
MIN
WRN 1
ON
1 of 2