Create a SIP Peer Trunk

Background information

Assume that you have bought a SIP account from the ITSP ABC, and the trunk information is displayed as below.

Provider domain: abc.provider.com
Protocol: SIP
Registration Port: 5060
Transport: UDP

Prerequisites

You have purchased a SIP account from an ITSP and no username and password is offered but only a domain name or IP address.
Your PBX can connect to the ITSP.

Procedure

Log in to PBX web portal, go to Extension and Trunk > Trunk, click Add.
In the Basic section, configure the following settings:
- Name: Enter a name to help you identify it.
- Trunk Status: Select Enabled.
- Select ITSP Template: Select General.
In the Detailed Configuration section, select the trunk type and enter the SIP information that is provided by the ITSP.
- Trunk Type: Select Peer Trunk.
- Transport: Select the transport provided by the ITSP. In this scenario, select UDP.
- Hostname/IP: Enter the domain name or IP address of the ITSP. In this scenario, enter abc.provider.com.
- Port: Enter the provided registration port. In this scenario, enter 5060.
- Domain: Enter the domain in SIP URI of a specific header like From, To header. In this example, enter abc.provider.com.
  
  Note: If the domain is not provided by ITSP, enter the same value as Hostname/IP.
- Availability under Disaster Recovery: Set the availability of the trunk.
  Note: This option is displayed only when Disaster Recovery is enabled on the PBX.
  - Only available for Working Server: The trunk can only be used for the Working Server. When the Working Server goes down and the Redundancy Server takes over, calls won't be routed through this trunk.
  - Only available for Redundancy Server: The trunk can only be used for the Redundancy Server. When the Working Server is in function, calls won't be routed through this trunk.
  - Both: The trunk can be used for both Working Server and Redundancy Server, and calls can always be routed through this trunk.
Optional: If you have purchased DID numbers from the ITSP, click DIDs/DDIs tab to configure the DID numbers for the trunk.
1. Click Add, then add DID number(s) according to your need.
  - To add a single DID number, do as follows:
    1. In the Create Method drop-down list, select Single DID.
    2. Configure the following settings:
    - DID/DDI: Enter the provided DID number.
    - DID/DDI Name: Optional. Enter a name to distinguish inbound calls by DID numbers.
      When the DID number is dialed, the name will be displayed on the called party's device.
  - To add a range of DID numbers, do as follows:
    1. In the Create Method drop-down list, select DID Range.
    2. Configure the following settings:
    - DID Range: Enter the start number and the end number of the DID range.
    - DID/DDI Name: Optional. Enter a name to distinguish inbound calls by DID numbers.
      When the DID number is dialed, the name will be displayed on the called party's device.
2. Click Confirm.
Note: For more information of DID configurations, see Configure DID Numbers on a Trunk.
Click Save and Apply.

Result

Go to Extension and Trunk > Trunk to check the trunk status on the trunk list page.

If the status shows , the trunk is registered successfully.

For more information of SIP trunk status, see SIP Trunk status.

What to do next

To receive inbound calls through the trunk, you need to select this trunk to one or more inbound routes. For more information, see Set up an Inbound Route.
To make outbound calls through the trunk, you need to select this trunk to one or more outbound routes. For more information, see Set up an Outbound Route.