One-Way Audio (RTP) Issues
Encountering one-way audio or no audio at all during SIP trunk calls? You've come to the right place. This topic covers the common scenarios of one-way audio, no audio, or intermittent audio issues, which may be related to Real-time Transport Protocol (RTP) behavior.
If you're experiencing this issue, don't worry—we've got you covered. We'll help you understand potential causes, such as RTP/NAT/codec behavior, and provide guidance on troubleshooting steps.
Note: This topic does not apply to cases where calls fail before answering or issues are isolated to a single phone behind the PBX.
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