As an optional service, Channel Partners can enable the ability to present Non-Gamma Registered CLIs as the Presentation A-Number CLI from a SIP Trunk Endpoint. This is called CLI Flexibility.
This feature is particularly relevant with Customer Call Centres and hosted offices, working on behalf of numerous clients. When making outbound IP calls, the user may want to present the relevant client number (this could be a non-Gamma number).
Activation of this feature requires an amendment to the standard Gamma Telecoms Services Agreement (TSA) which is signed once by the Channel Partner (see within Service Description) and the Customer Agreement (below) which is signed by each end user.
Note: DDI Billing is not currently possible when CLI Flexibility has been enabled on an endpoint.
For full terms and conditions of CLI Flexibility, including the change to the TSA, please see the SIP Trunks Technical Service Description.
Enable CLI Flexibility #
In order to be able to set up CLI Flexibility on a SIP Trunk endpoint, you must sign an amendment to the terms of service agreements. To do this, please contact your BDM who can help you with this. Once this has been signed, access will be granted to edit CLI Flexibility.
Once access has been granted by Gamma you can enable or disable CLI Flexibility by completing the following steps.
Step 1
From the Gamma Portal, go to “Provisioning and Service Management”, “Voice Connectivity”, “Gamma SIP Trunks” and “Service Management”.
If you don’t have this option contact your Portal Administrator (Help and Support and Portal Administrators) or contact your Internal Account Manager.
Step 2
Select the account that has the endpoint you wish to provision CLI Flexibility for and click “View”.

Step 3
From the “Actions” drop-down select “CLI Flexibility Settings” and click “Continue”

Step 4
Read the “CLI Flexibility Terms and Conditions” and once you agree with them, tick the “I accept the terms and conditions above” tick box.
Press “Enable CLI Flexibility” button which will then apply CLI Flexibility to the endpoint.


