Depending on the call flow there are several points that should be checked before opening a ticket with Support.
* On-net call:
- Try to find which side may be causing the issue by placing on-net calls to some other on-net destination which you feel is functioning normally, for example to UM (*98).
- Once you determine which side is experiencing the issue, try using a different VoIP device (for example, using a softphone).
- Try different codecs.
- Make sure the Internet connection is not overloaded by other devices within LAN and is functioning properly.
* Off-net call (DID provider -> Sagecom): place an on-net call to this DID, to clarify if the DID provider is a root of the issue. If this is the case, please contact your DID provider to resolve the issue.
* Off-net call (Sagecom -> Termination vendor): place a call using another vendor. Try another codec.
Remember that it is necessary to avoid proxying media whenever possible, thus if it was used, you can enable STUN (208.89.104.3) in UA and check if it makes any difference.
If the above steps do not resolve the issue, please open a ticket with Support after finding the corresponding H323-Conf-ID.
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