# Bandwidth.com Configuration Problem

**URL:** <https://community.asterisk.org/t/bandwidth-com-configuration-problem/20681>\
**Category:** Asterisk Support\
**Created:** [May 1, 2008, 2:08pm UTC](https://community.asterisk.org/t/bandwidth-com-configuration-problem/20681 "2008-05-01T14:08:34Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Zipster90](https://avatars.discourse-cdn.com/v4/letter/z/c68b51/32.png) [@Zipster90](https://community.asterisk.org/u/Zipster90)\
**Post date:** [May 1, 2008, 2:08pm UTC](https://community.asterisk.org/t/bandwidth-com-configuration-problem/20681/1 "2008-05-01T14:08:34Z")

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I’m kind of new to Asterisk so bear with me.

My company is trying to get a cheap PBX system up and running using Asterisk and Ubuntu Server. We’ve purchased 2 SIP trunks from [Bandwidth.com](http://Bandwidth.com), but have had trouble trying to configure them. I’ve used the asterisk-GUI to add [Bandwidth.com](http://Bandwidth.com) as a service provider using their preset settings, but whenever I dial out it just sit there at “Calling trunk\_1/+MYCELLPHONENUMBER”.

When I try to call in with my cell phone, it gives me this error:

NOTICE[5217]: chan\_sip.c:13952 handle\_request\_invite: Call from ‘’ to extension ‘+OURDIDNUMBER’ rejected because extension not found.

UPDATE: After showing this error, and after a long silence, my asterisk phone will ring, but as soon as I answer, i get a busy signal and the phone hangs up.

So I know my SIP trunk is hitting Asterisk, but my configuration must be wrong. I just don’t know what it could be. Any ideas? Thanks.