Specifications

85
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.