Yeastar: Configuring a SIP Trunk

Overview

A SIP trunk connects the PBX to the public telephone network. This guide covers adding a Comms Channel SIP trunk to a customer PBX and testing it before any routing is built.

Steps to Add the SIP Trunk

1. Log in to the PBX web portal and go to Extension and Trunk > Trunk.
2. Click Add.
3. Enter a name (for example, CommsChannel Main) and set Trunk Status to Enabled.
4. Set Select ITSP Template to General.
5. In Detailed Configuration, set Trunk Type to Register Trunk.
6. Enter the SIP server, username and password provided by Comms Channel.
7. Set codecs to G.711a, G.711u, G.729 and DTMF to RFC 2833.
8. Click the DIDs/DDIs tab and add the customer's numbers.
9. Click Save and Apply, then confirm the trunk shows as registered in the Trunk list.

Steps to Test the Trunk

1. Add the trunk to an inbound route and an outbound route.
2. Make a test outbound call to a mobile number.
3. Make a test inbound call to a DID.
4. Confirm two-way audio and check both calls in the CDR.

Key Notes