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Release Notes for Cisco 7000 Family for Cisco IOS Release 12.1 T

78-10811-05

New and Changed Information

H.323 Version 2 Support

Platforms: Cisco 7200 series routers

Cisco H.323 Version 2 Phase 2 upgrades Cisco IOS software by adding the following optional features

an facilitates customized extensions to the Cisco Gatekeeper.

• H.323v2 Fast Connect—The Fast Connect feature allows endpoints to establish media channels

without waiting for a separate H.245 connection to be opened.

• H.245 Tunneling of DTMF Relay in conjunction with Fast Connect—Through H.245 tunneling,

H.245 messages are encapsulated within Q.931 messages without using a separate H.245 TCP

connection. When tunneling is enabled, one or more H.245 messages can be encapsulated in any

Q.931 message.

• H.450.2 Call Transfer--Call Transfer allows an H.323 endpoint to redirect an answered call to

another H.323 endpoint. CiscoGateways support H.450.2 Call Transfer as the transferred and

transferred-to party.

• H.450.3 Call Deflection—Call Deflection is a feature under H.450.3 Call Diversion (Call

Forwarding) that allows a called H.323 endpoint to redirect the unanswered call to another H.323

endpoint. Cisco gateways support H.450.3 Call Deflection as the originating, deflecting, and

deflected-to gateway.

• Translation of FXS Hookflash Relay—A “hookflash” indication is a brief on-hook condition during

a call. The indication is not long enough in duration to be interpreted as a signal to disconnect the

call. You can create a hookflash indication by quickly depressing and releasing the hook on your

telephone.

• H.235 Security—Security for Registration, Admission, and Status protocol (RAS) signaling

between H.323 endpoints and Gatekeepers is enhanced in H.323 Version 2 Phase 2 by including

secure endpoint registration of the Cisco gateway to the Cisco Gatekeeper and secure per-call

authentication. In addition it will provide for the protection of specific messages related to OSP

(Open Settlement Protocol) and other messages as required via encryption tokens.

• Gatekeeper Transaction Message Protocol (GKTMP) and RAS Messages--The Gatekeeper

Transaction Message Protocol (GKTMP) for the Cisco Gatekeeper provides a transaction-oriented

application protocol that allows an external application to modify gatekeeper behavior by

processing specified RAS messages.

• Gatekeeper and Alternate Endpoints--The Alternate Endpoint feature allows a gatekeeper to

specify alternative destinations for a call when queried with an Admission Request (ARQ) by an

originating gateway.

• Gatekeeper C Code Generic API for GKTMP in a Unix Environment--This API allows 3rd party

applications running in a Unix host to send and receive GKTMP messages to a CiscoGatekeeper.

This API may be used to develop back-end services such as authentication, billing and address

translation.

• Gateway Support for Network-Based Billing Number—This feature informs the gatekeeper of the

specific voice port or T1/E1 span from which an incoming call entered the ingress gateway.

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