Configuring the SBC to Send the REST API

The SBC must be configured to send the REST API to the ARM as described in Adding a Policy Studio Rule for Users Credentials Information.

To configure the SBC to send the REST API to the ARM:
In the SBC's Web interface, configure an IP Group with specific settings.
For REGISTER messages: In the SBC’s Web interface in IP Group settings, under the ‘SBC Registration and Authentication’ section, configure parameter 'Authentication Method List' to REGISTER and from the 'SBC Server Authentication Type' drop-down, select ARM Authentication.

SBC Web interface - SBC Registration and Authentication - REGISTER

To configure IP-to-IP Routing (referred from Adding a Policy Studio Rule for Users Credentials Information):
1. In the SBC's Web interface, open the IP-to-IP Routing page (Setup > Signaling & Media > SBC > Routing > IP-to-IP Routing).

IP-to-IP Routing page in SBC's Web interface

2. [Use the preceding figure as reference] Define an IP-to-IP Routing Rule with a 'Request Type' of Register.
3. Define its 'Destination Type' as All Users.
4. Make sure this Routing Rule is located in the IP-to-IP Routing page before the IP-to-IP Routing Rule whose 'Destination Type' is defined as Routing Server.
For INVITE messages: In the SBC’s Web interface in IP Group settings, under the ‘SBC Registration and Authentication’ section, configure parameter ‘Authentication Method List’ to INVITE and from the ‘SBC Server Authentication Type’ drop-down, select ARM Authentication.
The INVITE/REGISTER is received in the incoming Pcon.
To configure INVITE or REGISTER to the same incoming Pcon, configure parameter 'Authentication Method List' to INVITE|REGISTER.

SBC Web interface - SBC Registration and Authentication - INVITE

The feature involves changes in the SBC ↔ ARM REST internal REST API
The feature is supported starting from SBC version 7.20A.259.031