Configuring SIP registrar settings

Type a name for the SIP registrar.

This is a useful way to identify a registrar where more than one has been configured.

Specifies the level of SIP registration for the IP gateway.

Can be set to:

• No registration: The IP gateway will not register with the SIP registrar. This means that a user with a SIP endpoint can only connect to the IP gateway by dialing its IP address or hostname
• Register IP GW: Enables callers to dial in to the auto attendant of the IP gateway

Identifies the network address of the SIP registrar to which IP gateway registrations should be made.

This can be specified either as a host name or as an IP address. This field will have no effect if SIP registration settings is set to No registration.

Select this option to force the IP gateway to present its local certificate when registering with the SIP registrar.

Often, the SIP registrar will not require the local certificate from the IP gateway. Only select this option if your environment dictates that the SIP registrar must receive the local certificate.

The login name for the IP gateway on the SIP registrar.

You need to configure the SIP registrar with details of the devices that will register with it and create a login for each device.

If you are using Microsoft OCS or LCS, you need to enter the full URI (for example, MCU@mylcs.com).

The password for the IP gateway on the SIP registrar.

You need to configure the SIP registrar with details of the devices that will register with it and create a login for each device. The password configured on this page needs to match the password in the SIP registrar. For Microsoft OCS or LCS, do not enter a password.

Identifies the protocol to be used for call control messages for outgoing call connections.

If your SIP devices use TCP, select TCP as the outgoing transport. If your SIP devices use UDP, select UDP as the outgoing transport. If you want to use encrypted SIP, select TLS. Note that if you want to use TLS, you must have the encryption feature key (or the Secure management feature key) and the TLS service must be enabled on the Network > Services page.

The IP gateway can accept connections on TCP, UDP, and TLS providing those services are enabled on the Network > Services page (Configuring network services).