# Error when registering SIP trunk

**URL:** https://forums.vitalpbx.org/t/error-when-registering-sip-trunk/5633
**Category:** VitalPBX
**Created:** [August 5, 2025, 2:54pm UTC](https://forums.vitalpbx.org/t/error-when-registering-sip-trunk/5633 "2025-08-05T14:54:36Z")
**Posts on this page:** 4
**Page:** 1

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### Author: ![mamob07](https://forums.vitalpbx.org/user_avatar/forums.vitalpbx.org/mamob07/32/4232_2.png) [@mamob07](https://forums.vitalpbx.org/u/mamob07)
#### Post date: [August 5, 2025, 2:54pm UTC](https://forums.vitalpbx.org/t/error-when-registering-sip-trunk/5633/1 "2025-08-05T14:54:36Z")

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Hello I got the following errors when trying to register my SIP trunk. I use Vodafone as provider.

```auto
[2025-08-05 13:13:40] ERROR[4228] res_pjsip.c: Unable to create outbound OPTIONS request to endpoint +390882645179 as URI 'sip:+3908 ******** @ims.vodafone.it@ims.vodafone.it:5060' is not valid
[2025-08-05 13:13:40] ERROR[4228] res_pjsip/pjsip_options.c: Unable to create request to qualify contact sip:+3908 ********@ims.vodafone.it@ims.vodafone.it:5060 on AOR +3908********

```

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<div class="post-metadata">

### Author: ![airsay](https://forums.vitalpbx.org/letter_avatar_proxy/v4/letter/a/7ab992/32.png) [@airsay](https://forums.vitalpbx.org/u/airsay)
#### Post date: [August 28, 2025, 2:46am UTC](https://forums.vitalpbx.org/t/error-when-registering-sip-trunk/5633/2 "2025-08-28T02:46:38Z")

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Why do you have this?

+3908\*\*\*\*\*\*\*\* **@ims.vodafone.it@ims.vodafone.it** :5060

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### Author: ![rohan](https://forums.vitalpbx.org/letter_avatar_proxy/v4/letter/r/f19dbf/32.png) [@rohan](https://forums.vitalpbx.org/u/rohan)
#### Post date: [September 3, 2025, 3:25pm UTC](https://forums.vitalpbx.org/t/error-when-registering-sip-trunk/5633/3 "2025-09-03T15:25:20Z")

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> [@mamob07](#):
>
> `+3908 ******** @ims.vodafone.it@ims.vodafone.it:5060`

HI You have this +3908\*\*\*\*\*\*\*\*@ims.vodafone.it@ims.vodafone.it:5060 is invalid, this should be +3908\*\*\*\*\*\*\*\*@ims.vodafone.it seems you have mentioned sip domain twiced.

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### Author: ![system](https://forums.vitalpbx.org/uploads/default/original/1X/672b458a1d454755270c2c16adc5316b641c3c6a.png) [@system](https://forums.vitalpbx.org/u/system)
#### Post date: [October 3, 2025, 3:25pm UTC](https://forums.vitalpbx.org/t/error-when-registering-sip-trunk/5633/4 "2025-10-03T15:25:27Z")

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