# Conncet 3 asterisk server using Sip Trunk

**URL:** <https://community.asterisk.org/t/conncet-3-asterisk-server-using-sip-trunk/44640>\
**Category:** Asterisk General\
**Created:** [December 2, 2013, 6:18am UTC](https://community.asterisk.org/t/conncet-3-asterisk-server-using-sip-trunk/44640 "2013-12-02T06:18:11Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![ayesha\_arshad](https://avatars.discourse-cdn.com/v4/letter/a/eb8c5e/32.png) [@ayesha\_arshad](https://community.asterisk.org/u/ayesha_arshad)\
**Post date:** [December 2, 2013, 6:18am UTC](https://community.asterisk.org/t/conncet-3-asterisk-server-using-sip-trunk/44640/1 "2013-12-02T06:18:11Z")

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I’m using Asterisk (Ver. 1.8.21.0) on cent os.  
I have 3 asterisk server A, B, C. Each work fine. Asterisk A is connected to both B and C using two Sip Trunks and it works fine too. The thing is How B can establish a call to C using sip trucks B-\>A than A-\>C.  
I’ve looked everywhere but could not find answer. I’ll appreciate if anyone here tell me how?

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**Author:** ![david55](https://avatars.discourse-cdn.com/v4/letter/d/e19adc/32.png) [@david55](https://community.asterisk.org/u/david55)\
**Post date:** [December 2, 2013, 8:42am UTC](https://community.asterisk.org/t/conncet-3-asterisk-server-using-sip-trunk/44640/2 "2013-12-02T08:42:46Z")

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Include the dialplan rules form making calls from A to C in the context for calls arriving from C.

In future, please use Asterisk Support for support questions.