Cisco Systems ASR 1000 H.248 Termination State Control Package

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Cisco IOS XE Integrated Session Border Controller Configuration Guide for the Cisco ASR 1000 Series Aggregation Services Routers

OL-15421-01

Chapter 6 H.248 Packages—Signaling and Control

H.248 Termination State Control Package

• The values of the sfr/td, sfr/db, sfr/aa, and sfr/dt properties are reported to the MGC in Audit

responses.

DBE Restrictions

The following are restrictions of DBE support for the sfr package:

• Terminations can be associated by context, but not by VLAN because the VLAN value of the sfr/aa

property is not supported. If a request includes the VLAN value, the request is rejected with error

501, “Not Implemented.”

• Properties in the sfr package cannot be manipulated by a wildcard Modify command.

• If a termination belongs to multiple streams, the sfr properties must be set consistently in all streams.

Note See the MultiService Forum Contribution document, Contribution Number: msf2006.117.03 for

more information about the sfr package.

H.248 Termination State Control Package

The Termination State Control (tsc) package enhances the capabilities of the media gateway controller

(MGC) to support the following two features:

• tsc-quiesce

The MGC can instruct the media gateway (MG) to set the ServiceState property of a signaling

pinhole to OutOfService state at the point where all associated (media) terminations are subtracted.

The MG informs the MGC when this has occurred. This feature is known as tsc-quiesce.

• tsc-suspend

The MGC can put a signaling pinhole out of action for a given period of time. The MG informs the

MGC when the signaling pinhole becomes operational again, and the MGC can query the time

remaining until the suspension ends. This feature is known as tsc-suspend.

A signaling pinhole is composed of two terminations. If either termination is out of service, the entire

pinhole is out of service. It is up to the MGC whether to provision one or both terminations with the

relevant properties. If the MGC chooses to provision only one termination, the MG does not impact the

other termination.

The tsc-quiesce feature includes the following functionality:

• Quiesce is not symmetrical. Adding a media termination does not cause a quiesced OutOfService

signaling pinhole to automatically move to InService. The MGC must explicitly set the termination

to InService.

• When tsc-quiesce takes effect, the gtd property is left as is, which means that the termination

requiesces the next time all associated terminations are subtracted.

• Wildcard Subtracts on media terminations in multiple contexts result in multiple Deactivation

Completed events to the MGC.