Cisco uBR924 Specifications download pdf (Page 13)

Release Notes for Cisco uBR924 Cable Access Router for Cisco IOS Release 12.1(5)T

OL-0385-04 Rev. B0 (2/2001)

New and Changed Information

New Software Features in Release 12.1(2)T

The following new software features are supported by the Cisco uBR924 Cable Access Router for

Cisco IOS Release 12.1(2)T. For more information on these features, see the documentation listed in

the “Related Documentation” section on page 34.

Configurable H.225 Timer

In previous Cisco IOS releases, the H.225 Transmission Control Protocol (TCP) connection timeout

timer was fixed at 15 seconds. Cisco IOS Release 12.1(2)T adds the ability to configure this timer to a

value between 1–30 seconds, or to disable it entirely.

Note For more information on this feature, see the Configuring the Configurable Timers in

H.225 feature module, available on CCO and the Documentation CD-ROM.

Ecosystem Gatekeeper Interoperability Enhancements, Phase 2

This feature enhances the existing Ecosystem Gatekeeper Interoperability Enhancements feature to

improve the ability of voice gateways to move between gatekeepers upon a failure or an outage. In

addition to the existing features, phase 2 adds support for the alternate gatekeeper field (altGKInfo) to

the admission rejection message. This allows a gateway to move between gatekeepers during the

admission request phase.

Phase 2 of this feature is introduced in Cisco IOS Release 12.1(2)T.

Note For more information on this feature, see the Ecosystem Gatekeeper Interoperability

Enhancements, Phase 2 feature module, available on CCO and the Documentation

CD-ROM.

H.323 Support for Virtual Interfaces

Cisco IOS Release 12.1(2)T for the Cisco uBR924 Cable Access Router introduces a new interface

command to control the IP address used for outgoing H.323 VoIP traffic:

h323-gateway voip bind srcaddr ip address

The h323-gateway voip bind command can be used with any interface, but its primary use is with the

Cisco uBR924 router’s Ethernet interface when configuring a Virtual Private Network (VPN). In this

configuration, the h323-gateway voip bind command configures the router so that VoIP traffic is sent

and received using the IP address of the Ethernet interface (as opposed to the default behavior, which

is to use the IP address of the default outgoing interface, which is the cable interface).

The h323-gateway voip bind command allows the enterprise network to maintain the H.323 gatekeeper

and gateway in the enterprise network’s address space. Without the h323-gateway voip bind command,

outgoing voice traffic uses the IP address of the cable interface. This requires that the H.323 gatekeeper

and gateway be maintained in the cable service provider’s address space, which is not desirable if the

enterprise needs to control the voice network and VPN configuration.

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Cisco uBR924 Specifications Page 13