# "Retell BYO SIP trunk not sending INVITE to provider - dial no answer"

**URL:** <https://community.retellai.com/t/retell-byo-sip-trunk-not-sending-invite-to-provider-dial-no-answer/3387>\
**Category:** Support Help\
**Tags:** agent-performance\
**Created:** [July 20, 2026, 9:51pm UTC](https://community.retellai.com/t/retell-byo-sip-trunk-not-sending-invite-to-provider-dial-no-answer/3387 "2026-07-20T21:51:28Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![rafaelnery](https://yyz2.discourse-cdn.com/flex008/user_avatar/community.retellai.com/rafaelnery/32/2383_2.png) [@rafaelnery](https://community.retellai.com/u/rafaelnery)\
**Post date:** [July 20, 2026, 9:51pm UTC](https://community.retellai.com/t/retell-byo-sip-trunk-not-sending-invite-to-provider-dial-no-answer/3387/1 "2026-07-20T21:51:28Z")

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“I’m using a BYO SIP trunk with Fale Vono (Brazil). Termination URI: 190.89.248.47 (also tried [vono2.me](http://vono2.me)). All calls return ‘dial no answer’. My SIP provider confirmed they are NOT receiving any INVITE from Retell. The outbound IP I found via DNS is 18.98.16.121 — is this correct? Are there other IPs Retell uses for outbound SIP? My phone number: +5511922010399, trunk user: pubz91374”

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**Author:** ![mark1](https://yyz2.discourse-cdn.com/flex008/user_avatar/community.retellai.com/mark1/32/2524_2.png) [@mark1](https://community.retellai.com/u/mark1)\
**Post date:** [July 21, 2026, 1:20pm UTC](https://community.retellai.com/t/retell-byo-sip-trunk-not-sending-invite-to-provider-dial-no-answer/3387/2 "2026-07-21T13:20:23Z")

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Hello @rafaelnery Could you please share the failing Call ID and your Org ID? This will help us investigate the issue further and review it with the team.