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Error reference · Asterisk

Asterisk: Unable to retrieve PJSIP transport 'transport-udp'

Unable to retrieve PJSIP transport 'transport-udp'

What it means

An endpoint or registration refers to a transport section that does not exist (or failed to load).

Why it happens

  • Typo in transport= or the section was renamed.
  • Two transports bind the same port, so one did not start.
  • The TLS transport failed to load its certificate.

How to fix it

  1. Compare transport= with the [section] names; pjsip show transports.
  2. Give each transport its own port; check the log right after module reload for bind errors.
  3. For TLS check cert_file and priv_key_file paths and permissions.

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SIP trunk generator

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