SIP Trunking App. Add Trunk. Basics Tab

Modified on Fri, Jun 16, 2023 at 1:43 PM

Description: The main purpose of this section is to set of basic parameters of the Trunk that is currently set up.


Here you can set the basic parameters of the newly created Trunk:

  • PBX Manufacturer: clicking on this field will display a drop-down menu containing a list of telecommunication equipment manufacturers. You can choose the manufacturer that matches the PBX you are using.

  • PBX Nickname: in this section, you can assign a personalized name to the configured Trunk, which will be visible in the Table of Existing Trunks.
  • Authentication: in this section, you can select the authentication type required for inbound requests. There are two options available, each with a different set of fields to configure upon selection. 
    • Username/Password: choosing this option will prompt you to provide the authentication Username and Password.


There are no specific guidelines or restrictions for these credentials.
  • IP Address: selecting this option will require you to input the IP address to be used for authentication.


  • Invite Format: it refers to the format used for SIP requests that initiate communication sessions between devices present within the given SIP realm. Clicking on this field will display a drop-down menu containing a list of available formats.


Please reach out to Ooma customer support for additional information regarding the Invite Formats.


  • Outbound Flag: in this section, you can set an outbound flag, which allows the app to perform various routing actions when the customer makes an outbound call through us to the carrier. For instance, you can use the flag to force the selection of a particular carrier.
  • Compatibility Mode: disabling this toggle will create a point-to-point connection (from carriers to customers). Enabling this toggle will force the Ooma system to stay in the media path.
The call quality depends on the connection quality between the carriers and the customer when it's disabled. When it's enabled, the call quality will depend on Ooma's connection to the carrier/customer (send media through Ooma). Enabling will potentially improve call quality when the Ooma data center has a better connection to the carrier than the customer.


  • Server/Realm: This parameter represents the hostname utilized for transmitting traffic. The system automatically sets this field, and it cannot be modified. 
The SIP realm is a domain or a namespace that identifies a set of users and devices that are registered to a particular SIP server or service provider. The SIP realm plays a crucial role in authenticating and authorizing users to access SIP services.


Once you have inputted data into the fields, do not forget to click the "SAVE" button to apply the changes. 

The SIP Trunking App will display a pictogram of an exclamation mark within a green circle next to any fields that have been modified.  

The PBX Connector App will notify you that leaving the page will result in the loss of any unsaved changes. 



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