You have come to this page this means you already have create extensions and now want to configure sip trunk in your asterisk pbx.

How to get SIP configurations from VoIP Providers

Most of the voip providers provide you control panel where you can generate sip configurations. For example Telnyx will provide you sip configuration something like this

IP Auth sip configuration

type=friend

qualify=yes

insecure=port,invite

host=sip.telnyx.com

fromdomain=sip.telnyx.com

disallow=all

allow=ulaw

User/Pass auth SIP trunk settings

username=your_credentials_based_telnyx_username

secret=your_credentials_based_telnyx_password

type=friend

qualify=yes

insecure=port,invite

host=sip.telnyx.com

fromdomain=sip.telnyx.com

disallow=all

allow=ulaw

Those who are not aware of Telnyx, This is New York based VoIP providers and provide voip services including DID Numbers at very competetive rate.

Now login to PBX web interface and click on connectivity then Trunks, select chan_sip trunk.

Give it a name, In Dial Number Manipulation Rules, select Dial pattern wizard.

Then go to Sip settings and paste it like this images

Outbound Route

We can have multiple trunk in a pbx, using outbound route we tell PBX which trunk should be used to dial outbound calls.

Go to connectivity then select Outbound routes, Give it a name, and set callerid.

Go to Dial pattern and use dial pattern wizard. Sumit it.

Now your PBX is ready to make outbound calls.

In the next article we will learn how to configure DID Number for inbound