Nortel VoIP Gateway, Configuration Manual, Page: 146 / 220

146 Troubleshooting
P0606298 02
Possible H.323 Problems
Possible H.323 problems are described in Table 23 .
Table 23 Possible H.323 problems
Problem Possible Cause What to do
Gateway did not register in
Gatekeeper The ini file was not updated to do so • Update ini file.
No call was made • Gateway registers only before the first
call.
Gatekeeper rejected
registration Gatekeeper already has the same
registered phone numbers • Change the gateway phone numbers
G.711 voice quality is bad
(clicks) Silence compression not compatible
on the far end Gateway • Disable it and check if quality is better.
Packet size not compatible (with
G.711) • Check that packet period in remote
side is 20 msec.
SETUP is sent before all digits
were dialed “MaxDigits” parameter has too small a
number • Update the parameter.
No voice There is no match in codecs • Check log in HyperTerminal.
Change codec definition.