Aastra Telecom 57I C53I manual Advanced SIP Settings

Administrator Options

Administrator Level Options

•Outbound Proxy Port

The proxy port on the proxy server to which the IP phone sends all SIP messages. Default is 0. Configurable on a global and per-line basis.

•Registrar Server

(Registrar IP in the configuration files). IP address of the SIP registrar. Up to 64 alphanumeric characters. Enables or disables the phone to be registered with the Registrar. When Register is disabled globally, the phone is still active and you can dial using username and IP address of the phone. A message "No Service" displays on the idle screen and the LED is steady ON. If Register is disabled for a single line, no messages display and LEDs are OFF. Configurable on a global and per-line basis.

•Registrar Port

SIP registrar’s port number. Default is 0. Configurable on a global and per-line basis.

•Backup Registrar Server

The address of the backup registrar (typically, the backup SIP proxy) for which the IP phone uses to send REGISTER requests if the primary registrar is unavailable.

•Backup Registrar Port

The backup registrar's (typically the backup SIP proxy) port number.

•Registration Period

(Not configurable via IP Phone UI). The requested registration period, in seconds, from the registrar. Configurable on a global and per-line basis.

Advanced SIP Settings

In addition to the basic SIP settings, you can also configure the following advanced SIP parameters. These parameters are not configurable via the IP phone UI.

•Explicit MWI Subscription

If the IP phone has a message waiting subscription with the Service Provider, a Message Waiting Indicator (MWI) (LED or display icon) tells the user there is a message on the IP Phone. You can enable and disable MWI by setting this parameter to 0 (disable) or 1 (enable) in the configuration files or by checking the box for this field in the Aastra Web UI. Default is disabled.

Administrator Options

41-001160-00, Rev 01 Release 2.0 3-17