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Knowledge Base & Operational DocumentationHow to Troubleshoot VoIP Calls That Fail When Transferring Between Extensions
11/10/2026
Transfer failures may result from dial plan rules, permissions, incompatible transfer methods, or provider signaling behavior.
Checks to make
Record caller, source and target extensions, transfer type, and time. Test attended and blind transfer separately, inspect PBX logs and provider traces, and compare a working route. Confirm forwarding and external transfer permissions.
When to get help
Voice support can trace transfer signaling and dial plan configuration. Informatix Systems can assess the symptoms, evidence, and next steps. Contact Informatix Systems to discuss this issue.