Source note · Setting up FreePBX with a SIP trunk
The FreePBX RTP port range defaults to UDP 10000-20000, and Sangoma advises at least 4 ports per potential call.
Checked 2026-09-25
Default 10000-20000. You should have at least 4 ports per potential call.
- Vendor
- Sangoma
- Product
- FreePBX
- Subsystem
- Asterisk SIP Settings
- Deployment
- on-premises
- Region
- not restricted
- Release range
- current as of 2026-09-25
- Checked
- 2026-09-25
Sources
- PBX GUI - Asterisk SIP Settings User Guide — Sangoma · tier 2 current vendor documentation · RTP Port Ranges
Cite this note
APA
WarmTransfer. (2026, September 25). Setting up FreePBX with a SIP trunk: source note freepbx-sip-trunk-setup-rtp-port-range. WarmTransfer. https://warmtransfer.net/knowledge/claims/freepbx-sip-trunk-setup-rtp-port-range
BibTeX
@misc{warmtransfer-claim-freepbx-sip-trunk-setup-rtp-port-range,
title = {Setting up FreePBX with a SIP trunk: source note freepbx-sip-trunk-setup-rtp-port-range},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/freepbx-sip-trunk-setup-rtp-port-range},
note = {Source note freepbx-sip-trunk-setup-rtp-port-range, checked 2026-09-25}
}