For phones behind a remote NAT, Asterisk documents the endpoint options rtp_symmetric, force_rport and rewrite_contact, which send RTP and SIP back to the observed source address and port.
Checked 2026-09-24
- Vendor
- Sangoma
- Product
- Asterisk
- Subsystem
- res_pjsip NAT
- Deployment
- self-hosted
- Region
- not restricted
- Release range
- current as of 2026-09-24
- Checked
- 2026-09-24
Sources
- Configuring res_pjsip to work through NAT — Sangoma / Asterisk Project · tier 2 current vendor documentation · Endpoint options for remote NAT phones
Cite this note
APA
WarmTransfer. (2026, September 24). Setting up an Asterisk PBX with Twilio Elastic SIP Trunking: source note asterisk-twilio-pbx-setup-phone-nat-options. WarmTransfer. https://warmtransfer.net/knowledge/claims/asterisk-twilio-pbx-setup-phone-nat-options
BibTeX
@misc{warmtransfer-claim-asterisk-twilio-pbx-setup-phone-nat-options,
title = {Setting up an Asterisk PBX with Twilio Elastic SIP Trunking: source note asterisk-twilio-pbx-setup-phone-nat-options},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/asterisk-twilio-pbx-setup-phone-nat-options},
note = {Source note asterisk-twilio-pbx-setup-phone-nat-options, checked 2026-09-24}
}