For a credential (registration) trunk, a carrier's FreePBX instructions set the pjsip Settings Authentication to Outbound and Registration to Send, with Username and Secret from the carrier.

Checked 2026-09-25

Vendor
Telnyx
Product
Telnyx SIP trunking with FreePBX
Subsystem
Trunks module
Deployment
on-premises
Region
not restricted
Release range
written for FreePBX 13
Checked
2026-09-25

Sources

Cite this note

APA

WarmTransfer. (2026, September 25). Setting up FreePBX with a SIP trunk: source note freepbx-sip-trunk-setup-cred-auth-outbound-reg-send. WarmTransfer. https://warmtransfer.net/knowledge/claims/freepbx-sip-trunk-setup-cred-auth-outbound-reg-send

BibTeX

@misc{warmtransfer-claim-freepbx-sip-trunk-setup-cred-auth-outbound-reg-send,
  title  = {Setting up FreePBX with a SIP trunk: source note freepbx-sip-trunk-setup-cred-auth-outbound-reg-send},
  author = {{WarmTransfer}},
  year   = {2026},
  url    = {https://warmtransfer.net/knowledge/claims/freepbx-sip-trunk-setup-cred-auth-outbound-reg-send},
  note   = {Source note freepbx-sip-trunk-setup-cred-auth-outbound-reg-send, checked 2026-09-25}
}

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