SIP Trunking

    Create a SIP Trunk

    The VoIP Help Page Team·3 min read·Last updated: March 14, 2026

    **Scope**

    This article outlines how to create a SIP trunk for use with an on-premise PBX or ATA device.

    Requirements

    1. 1
      Log in to the Manager Portal
    2. 2
      Navigate to SIP Trunks

    3. Click Add SIP Trunk

    4. Under the Basic tab, complete the following information:

    • Name: Must be unique, all lower case letters, no spaces or special characters, minimum of 4 characters - Note: You may use the name of the domain. (i.e. Domain name of "domain2.12345.service", name the SIP Trunk "domain2.12345.service")
    • Domain: Client's domain name or public IP of the PBX
    • Description: Company Name
    • Relay Media:  Set to Don't care - If the PBX or ATA that you’re creating a trunk for requires media be sent directly to the origination/termination source, select No
    • Trunk Type: Select Bidirectional (Inbound & Outbound), Origination Only (Inbound Only), Termination Only (Outbound Only), or Locked (No Inbound or Outbound)
    • IP Control: Choose Static IP or Require Registration. This will depend on the PBX or ATA Requirements - If using Static IP, enter the IP address of the PBX
      • If using Require Registration, enter a unique username (not a DID). These credentials will be used for registering the PBX or ATA
    1. 1
      Click Next

    6. Under Dial Planning & Limits, complete the following fields:

    1. 1
      Dial Translation: This should be left as the domain name
    2. 2
      Dial Permission: Recommended permission is US & Canada. See Dial Permissions & International Calling for more information.
    3. 3
      Set the limitations you wish to use for inbound & outbound calls, or both
    4. 4
      Click Add

    1. 1
      Inbound call limit is the maximum number of sessions allowed to originate from the connection
    2. 2
      Outbound call limit is the maximum number of sessions allowed to terminate to the connection
    3. 3
    4. 4
      Configure static E911 addressing for the SIP trunk's number ( https://voipdocs.io/e-911/register-e911-from-manager-portal?from_search=145177188)

    1. 1

      As noted above, we recommend that the name be the same as the Domain name

    2. 2

      In the Portal, navigate to the Inventory page and you can assign numbers to the SIP trunk shown below:

    3. 3

      Sample SIP Trunk setup:

    4. 4

      Name— The Trunk ID, we recommend the Domain name to be used (domain.12345.service)

    5. 5

      Domain— The domain to associate with the trunk (domain.12345.service)

    6. 6

      Description— A string that defines, or otherwise notates, who or what the trunk is for

    7. 7

      Relay Media— Allows video content to be relayed, if yes.

    8. 8

      Trunk Type— The type of calling that can occur on the trunk (bidirectional, inbound, outbound, none)

    9. 9

      IP Contro — Require Registration when using registration, IP Control when using the peer IP

    10. 10

      SIP User — username for SIP registration

    11. 11

      SIP Password— password for SIP registration


    Passing Caller ID through from SIP Trunk

    To ensure Caller ID passes through our system from your SIP trunk, please send a 10-digit Caller ID on incoming calls. When dialing out, use either a 10-digit or 11-digit format. Avoid including a leading "+" in the Caller ID if you want it to pass through correctly.

    Was this article helpful?