Avaya Octel 50 Installation Manual page 224

Testing and Troubleshooting the Octel 50 System
Disconnects are not
recognized properly
For Dial Tone detection
For Hangup String detection
For Drop in Loop Current
detection
For systems using supervised
O 50 I G
CTEL NSTALLATION UIDE
Using the Octel 50 System Troubleshooting Table
•
The menus cannot be selected if the Mailbox Status display is
active.
Resolution Possibilities:
•
See the Configuration Note for the switch to determine the type
of disconnect supervision the PBX provides. For information on
verifying a switch's disconnect signal, see the topic,
"Determining a Switch's Disconnect Signal," later in this chapter.
Resolution Possibilities:
System Setup parameters:
•
Verify the value entered for DTONDET under Hangup Detection
in System Setup is not set too low. If it is, the system
disconnects prematurely. This parameter is set by the Integrator
utility.
•
If the switch does not return dial tone, set this value to 0 to
disable it. If the switch does not use dial tone for disconnect
detection, and you want to keep DTONDET enabled but inactive,
set it to 1200 (12 seconds).
Resolution Possibilities:
System Setup parameters:
•
Verify the correct string is entered in the HANGUPSTR
parameter under Hangup Detection in System Setup. It should
be blank if the switch does not use a hangup string.
•
Verify the HANGUPDLY parameter under Hangup Detection in
System Setup is correct for the switch. To calculate this value:
1. Multiply the number of digits in the switch's hangup string
by 40 milliseconds.
2. Multiply the number of pauses between digits in the string
by 20 milliseconds.
3. Add the results from steps 1 and 2 to determine the
minimum amount of delay that should be entered in this
field.
4. If Octel 50 still does not recognize the hangup string, keep
increasing this value by 20 milliseconds until it does.
Resolution Possibilities:
•
If the ports do not disconnect, set LCDTIME under Hangup
Detection in System Setup to 6 and restart the system.
•
If ports drop the call, then immediately go back off-hook,
increase the value of LCDTIME under Hangup Detection in
System Setup. If you have an AT&T Legend with the new 012
card, set this parameter to 75.
Resolution Possibilities:
13-22