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12-26
System Test Architecture Reference Manual for IP Telephony
OL-11591-01
Chapter 12 IP Video Telephony Configuration
Video Endpoints Configuration
Note By default, Cisco Unified CallManager waits for and endpoint to sent its capability before
Cisco Unified CallManager sends a Terminal Capability Set. However, calls from Cisco Unified Video
Advantage to an H.323 device require Cisco Unified Call Manager to send its capability immediately,
without waiting for the destination endpoint to send its capability first. Otherwise, calls may fails due to
capability negotiation issues.
To avoid this situation, uncheck the Wait for Far End H.245 Terminal Capability Set parameter in the
configurations for Cisco Unified Video Conferencing and for H.323 clients.
Route Pattern Configuration for Cisco Unified Videoconferencing PSTN Gateways
Cisco Unified CallManager routes outbound calls to the Cisco Unified Videoconferencing PSTN
gateway via a H.323 gateway utilizing a route pattern. In the Very Large Campus Clustering over the
WAN deployment model this route pattern was 79XXX.
Note The route pattern must begin with the same digits as the service prefix configured on the Cisco Unified
Videoconferencing 3540 PSTN gateway
The Cisco Unified Videoconferencing gateway registers with a prefix followed by the #. Cisco Unified
CallManager was configured with a route pattern that sends all outgoing video PSTN calls to the
Cisco Unified Videoconferencing gateway and that inserts the # after the Video PSTN prefix. This route
pattern is in a partition that can be reached only by video endpoints. Video endpoint will use the Cisco
Unified Videoconferencing gateway for audio and video PSTN calls.
For example, assume that a user dials 79 as the PSTN prefix and that the required route pattern is
79.XXXXXXXXXX.
To create this route pattern, Called Party Transformation was applied with the following settings:
• Discard Digits: PreDot
• Prefix Digits (outgoing calls): 79#
In this case, when a user dials 790123456789, Cisco Unified CallManager sends an H.225 Setup
message to the Cisco Unified Videoconferencing gateway with a called number of 79#0123456789.
Video Endpoints Configuration
The following sections describes how Cisco Unified CallManager was configured for Tandberg
endpoints:
• Phone Configuration for Tandberg SCCP Video Endpoints, page 12-27
• Phone Configuration for Gatekeeper-Controlled H.323 Video Endpoints, page 12-27
• Phone Configuration for Non-Gatekeeper-Controlled H.323 Video Endpoints, page 12-28
• Phone Configuration for SCCP Video Endpoints with Associated Cisco Unified Video Advantage,
page 12-30
For additional information about how Cisco Unified CallManager was configured for the Very Large
Campus with Clustering over the WAN site model, see Chapter 2, “Cisco Unified CallManager
Configuration.”