# Agent transfer not working to australian number

**URL:** <https://community.retellai.com/t/agent-transfer-not-working-to-australian-number/2660>\
**Category:** Support Help\
**Tags:** bug\
**Created:** [May 11, 2026, 1:14am UTC](https://community.retellai.com/t/agent-transfer-not-working-to-australian-number/2660 "2026-05-11T01:14:51Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![felix](https://yyz2.discourse-cdn.com/flex008/user_avatar/community.retellai.com/felix/32/1089_2.png) [@felix](https://community.retellai.com/u/felix)\
**Post date:** [May 11, 2026, 1:14am UTC](https://community.retellai.com/t/agent-transfer-not-working-to-australian-number/2660/1 "2026-05-11T01:14:51Z")

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Hi - I’ve got my agent set up correctly where it can make calls to an australian number, though when the agent tries to transfer it to a real person (also an australian number) we are getting a busy error code.

examples:

2026-05-11 01:04:57.849 call\_7e5f2ad3586df6f78d4d139879f error: Error transferring call, SIP status code: 486 SIP error category: user\_busy Error: twirp error unknown: INVITE failed: sip status: 486: Busy Here  
To troubleshoot, check out: [Debug outbound connection issues - Retell AI](https://docs.retellai.com/reliability/debug-outbound-call#steps-to-troubleshoot)

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<div class="post-metadata">

**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:** [May 11, 2026, 1:07pm UTC](https://community.retellai.com/t/agent-transfer-not-working-to-australian-number/2660/2 "2026-05-11T13:07:15Z")

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Hey @felix

The SIP 486 means the callee rejected/was busy — it’s a signal from the destination side, not a Retell config issue.

A SIP 486 Busy Here means the callee (the Australian person you’re transferring to) rejected the call or their line was actually busy. 486 = “Callee rejected the call” — it may be retried later.

Thank You