# Transfer call doesn't work

**URL:** <https://community.retellai.com/t/transfer-call-doesnt-work/2261>\
**Category:** Support Help\
**Tags:** telephony\
**Created:** [April 8, 2026, 6:34pm UTC](https://community.retellai.com/t/transfer-call-doesnt-work/2261 "2026-04-08T18:34:11Z")\
**Posts on this page:** 8\
**Page:** 1

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**Author:** ![matteventu7](https://yyz2.discourse-cdn.com/flex008/user_avatar/community.retellai.com/matteventu7/32/626_2.png) [@matteventu7](https://community.retellai.com/u/matteventu7)\
**Post date:** [April 8, 2026, 6:34pm UTC](https://community.retellai.com/t/transfer-call-doesnt-work/2261/1 "2026-04-08T18:34:11Z")

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I have an urgent problem, my transfer\_call doens’t work after I clicked on publish  
agent: agent\_3037610a2f634fb4465ed4d196  
I tried different phone numbers and I also created different agents but after clicking on publish it doesn’t work. Very urgent

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**Author:** ![Shah-Fazal](https://yyz2.discourse-cdn.com/flex008/user_avatar/community.retellai.com/shah-fazal/32/2522_2.png) [@Shah-Fazal](https://community.retellai.com/u/Shah-Fazal)\
**Post date:** [April 8, 2026, 6:42pm UTC](https://community.retellai.com/t/transfer-call-doesnt-work/2261/2 "2026-04-08T18:42:53Z")

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Hi @matteventu7

Do you see any error on screen ?

Thank You

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<div class="post-metadata">

**Author:** ![matteventu7](https://yyz2.discourse-cdn.com/flex008/user_avatar/community.retellai.com/matteventu7/32/626_2.png) [@matteventu7](https://community.retellai.com/u/matteventu7)\
**Post date:** [April 8, 2026, 6:44pm UTC](https://community.retellai.com/t/transfer-call-doesnt-work/2261/3 "2026-04-08T18:44:13Z")

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No, when the agent transfers the call ends

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<div class="post-metadata">

**Author:** ![Shah-Fazal](https://yyz2.discourse-cdn.com/flex008/user_avatar/community.retellai.com/shah-fazal/32/2522_2.png) [@Shah-Fazal](https://community.retellai.com/u/Shah-Fazal)\
**Post date:** [April 8, 2026, 6:44pm UTC](https://community.retellai.com/t/transfer-call-doesnt-work/2261/4 "2026-04-08T18:44:54Z")

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@matteventu7 Can you share some call IDs where this happened ?

Thank you

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<div class="post-metadata">

**Author:** ![matteventu7](https://yyz2.discourse-cdn.com/flex008/user_avatar/community.retellai.com/matteventu7/32/626_2.png) [@matteventu7](https://community.retellai.com/u/matteventu7)\
**Post date:** [April 8, 2026, 6:46pm UTC](https://community.retellai.com/t/transfer-call-doesnt-work/2261/5 "2026-04-08T18:46:13Z")

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call\_a9446dcbb1156e02ef31b3bd747

call\_19776b803b9e152462f3beed0a6

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<div class="post-metadata">

**Author:** ![Shah-Fazal](https://yyz2.discourse-cdn.com/flex008/user_avatar/community.retellai.com/shah-fazal/32/2522_2.png) [@Shah-Fazal](https://community.retellai.com/u/Shah-Fazal)\
**Post date:** [April 8, 2026, 6:47pm UTC](https://community.retellai.com/t/transfer-call-doesnt-work/2261/6 "2026-04-08T18:47:54Z")

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Hi @matteventu7

Thank you for providing the call ID. I’ve shared it with our team for review.

We’ll keep you updated as soon as we have more information.

Best regards

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<div class="post-metadata">

**Author:** ![Shah-Fazal](https://yyz2.discourse-cdn.com/flex008/user_avatar/community.retellai.com/shah-fazal/32/2522_2.png) [@Shah-Fazal](https://community.retellai.com/u/Shah-Fazal)\
**Post date:** [April 8, 2026, 7:22pm UTC](https://community.retellai.com/t/transfer-call-doesnt-work/2261/7 "2026-04-08T19:22:25Z")

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Hi @matteventu7

It appears the transfer\_call uses `sip_refer` mode (SIP REFER), which Retell sends successfully to the Telnyx SIP trunk, but Telnyx appears to not be completing the actual call to the transfer destination

Two things to try:

1. Switch the transfer mode from SIP REFER to SIP INVITE

2. Check with your SIP trunk provider (Telnyx): Confirm that SIP REFER is supported and properly configured on your trunk. Some trunk types require specific settings to handle REFER requests.

Thank You

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<div class="post-metadata">

**Author:** ![matteventu7](https://yyz2.discourse-cdn.com/flex008/user_avatar/community.retellai.com/matteventu7/32/626_2.png) [@matteventu7](https://community.retellai.com/u/matteventu7)\
**Post date:** [April 8, 2026, 8:54pm UTC](https://community.retellai.com/t/transfer-call-doesnt-work/2261/8 "2026-04-08T20:54:41Z")

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Thanks a lot for the rapid support, have a nice day!
