Kamailio's default route[PSTN] only treats a Request-URI user as a PSTN number if it starts with + or 00 followed by a non-zero digit and 3 to 20 more digits.
Checked 2026-10-02
- Vendor
- Kamailio project
- Product
- Kamailio
- Subsystem
- Default routing script
- Deployment
- on-premises
- Region
- not restricted
- Release range
- master branch as of 2026-10-02
- Checked
- 2026-10-02
Sources
- kamailio/etc/kamailio.cfg (default configuration, master branch) — Kamailio project · tier 3 vendor-maintained repositories · route[PSTN] block, $rU regex test
Cite this note
APA
WarmTransfer. (2026, October 2). Troubleshooting SIP 404 Not Found and 484 Address Incomplete call failures: source note sip-404-484-troubleshooting-kamailio-pstn-regex. WarmTransfer. https://warmtransfer.net/knowledge/claims/sip-404-484-troubleshooting-kamailio-pstn-regex
BibTeX
@misc{warmtransfer-claim-sip-404-484-troubleshooting-kamailio-pstn-regex,
title = {Troubleshooting SIP 404 Not Found and 484 Address Incomplete call failures: source note sip-404-484-troubleshooting-kamailio-pstn-regex},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/sip-404-484-troubleshooting-kamailio-pstn-regex},
note = {Source note sip-404-484-troubleshooting-kamailio-pstn-regex, checked 2026-10-02}
}