Possible H.323 Problems; Table 23 Possible H.323 Problems - Nortel VoIP Gateway Configuration Manual

146 Troubleshooting

Possible H.323 Problems

Possible H.323 problems are described in

Table 23 Possible H.323 problems

Problem
Gateway did not register in
Gatekeeper
Gatekeeper rejected
registration
G.711 voice quality is bad
(clicks)
SETUP is sent before all digits
were dialed
No voice
P0606298 02
Table
Possible Cause
The ini file was not updated to do so
No call was made
Gatekeeper already has the same
registered phone numbers
Silence compression not compatible
on the far end Gateway
Packet size not compatible (with
G.711)
"MaxDigits" parameter has too small a
number
There is no match in codecs
23.
What to do
Update ini file.
•
• Gateway registers only before the first
call.
• Change the gateway phone numbers
• Disable it and check if quality is better.
• Check that packet period in remote
side is 20 msec.
• Update the parameter.
• Check log in HyperTerminal.
Change codec definition.