SIP Domain Configuration

SIP Domain Overview

Domains are also known as “Realms” within SIP networks.

A domain, or a SIP realm, is a component within SIP which is used to authenticate users within the SIP registration process.
Domain profiles are used to define the way users will authenticate with the SBC.

• Local authentication is used when users will register with the SBC.

• Upper registration is used when users will register to a softswitch or a IP-PBX through a SBC.
  This enables topology hiding so that no one outside of the corporate network knows about the equipment sitting behind the SBC.

SIP Domain Configuration

Add a SIP domain by going to “Configuration -> Signaling -> Domains”

Open

All you need to provide to add a domain is the domain name, which should be a FQDN string (ie mycompany.com).

The system will then prompt you to select whether you want to enable “Forward Registration / Authentication”. If you want NSC to handle authentication of SIP requests (ie REGISTER, INVITE) using the local user database, you must choose “Disable”. If you plan to forward authentication to a third-party server (ie a registrar server or PBX) you must select “Enable” and provide the information of the third-party server that will handle authentication of those SIP requests.

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If you wish to create SIP accounts (users) you can click the “Add” button in the domain edit page.

• You can create as many domains as you want.

• Later you can “Bind” a domain to one or more SIP profiles.

• See the SIP profile configuration for details.

Catch All Upper Registration Domain

Create domain with domain name as "*" which acts as wildcard to accept all the domains in upper registration scenario.

Bind this special domain to sip profile which accepts upper registration request.

Note: If none of the domains which are bind to sip profile matches then this special domain is checked.