Always Approve SIP TLS Certificate

Select if you want the system to accept remote certificate over SIP TLS. The default is disabled.

Always Use SIP Default Outbound Proxy

Select to enable the system to route SIP requests that do not match the domain proxy configuration, through the default outbound proxy, even if an IP address is specified in the host portion of the destination URI.

Answer Delay (rings)

The number of rings before an incoming SIP call is answered. You can configure the duration of a ring using the Ring Interval engineering parameter. A value of 0 indicates an immediate answer. The default value is 1 ring. The range is 0 to 10 rings.

Enable SIP TCP Transport

Select if you want the system to accept and request SIP over TCP.

Enable SIP TLS Mutual Authentication

Select to enable the mutual authentication option for SIP TLS.

Enable SIP TLS Transport

Select to allow the system to accept and request SIP over TLS. Ensure that a certificate has been configured for the SIP TLS service profile.

Enable SIP UDP Transport

Select to allow the system to accept and request SIP over UDP.

Enable SIP UPDATE method

Select to allow session participants to modify the characteristics of the multimedia session through re-INVITE messages or UPDATE messages. Re-INVITE and UPDATE messages initiate session changes, such as hold and retrieve, codec changes, and adding or dropping media.

Enforce SIP Route Configuration

Select if outgoing route configuration is required. By default, the system raises an alarm if route configuration is missing. If outgoing route configuration is not required, clear the check box.

Enforce SIP TLS in Secured Media Mode

Select to disable the non-TLS transport in secured media mode.

Hide SIP User-Agent Header

Select to prevent the User-Agent header from being included in SIP messaging.

Long Call Audit Refresh Timer

The time period in seconds for sending a refresh request. The default is 600 seconds. The range is 90 to 3600 seconds.

Long Call Audit Type

Select the preferred Long Call Method to use: Disable Audit, INFO Ping, re-INVITE, or UPDATE.

Minimum Session Interval (RFC4028 Min-SE)

The minimum value for the session interval that the application can accept. RFC4028 recommends a Min-SE value of 90 seconds. The default is 90 seconds. The range is 90 to 3600 seconds.

Session Expires Value (RFC4028)

The number of seconds before a call times out if the call is not successfully refreshed. The default is 1800 seconds. The range is 90 to 3600 seconds.

Session On Hold Teardown Delay (sec)

The number of seconds a session can remain on hold before the system ends the session. A value of 0 indicates the system will not end a session on hold. The default is 3600 seconds. The range is 0 to 100000 seconds.

SIP Hold Before Refer

The call is placed on Hold prior to REFER.

SIP Response Code When System/Application Locked

The SIP Response Code needed to restore service when the application is locked, out-of-service, or exceeds engineering limits. The default value is 480. The range is 400 to 699.

Trusted Node Access Only

Select to prevent traffic from nodes that are not trusted. If a default proxy is configured, the call is redirected with a 305 Use Proxy message. Otherwise, the call attempt is rejected with a 403 Forbidden message.