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This topic describes how to troubleshoot a fault that occurs when IMS users are invited to join a conference through the SIP trunk.
Symptom
The unified gateway fails to invite IMS users to join a conference.
Possible Causes
The possible causes are as follows:
ϒ⁄The registration group password or account is incorrect.
ϒ⁄The calling number format does not meet IMS (86+area code+number) requirements.
ϒ⁄The registration group ID is not added to the outgoing calling number of the conference.
ϒ⁄The multiple call function is not enabled for the displayed number.
Parent Topic: SIP Trunk Fault