By default, Lifesize systems support the H.323 protocol for placing and receiving video and voice calls and H.460/SIP for NAT/firewall traversal. H.460 is a series of extensions to the H.323 videoconferencing standard which includes H.460.17, H.460.18 and H.460.19. Configure H.323 preferences in Preferences > H.323.
NOTE: If UVC ClearSea manages your Lifesize Icon or your Icon is connected to the Lifesize cloud-based service, H.323 is disabled.
|Use H.323||When H.323 is enabled, you can specify an H.323 name or extension to use when placing a call. The H.323 name and extension identify the device to the gatekeeper. Any registered device can dial another using this name and extension.||Enabled|
|Name||Optional value that is used when a gatekeeper is configured and requires the system to register with an H.323 ID. If the gatekeeper administrator assigns an H.323 ID for the system, enter that ID for the name. If UVC Transit serves as an H.460 server, specify the username that was set up for the device on UVC Transit.||Number randomly generated by the system|
|Extension||Optional value that is used when a gatekeeper is configured and requires the system to register with an E.164 number or extension. If the gatekeeper administrator assigns an E.164 number or extension for the system, enter that number for the extension. If UVC Transit serves as an H.460 server, specify the extension that was set up for the device on UVC Transit.||Number randomly generated by the system (same value as above)|
|Gatekeeper Mode||Allows you to choose a gatekeeper. Choose one of the following options:Set to Auto to automatically discover a gatekeeper.Set to Manual or Manual H.460 to specify the IP address and port for the primary gatekeeper. The gatekeeper port defaults to the industry standard, 1719.To enable H.460 support, you must have an H.460 server configured in your environment. With H.460 support enabled, the system ignores settings in Preferences > Network > Static NAT.||Off|
|Gatekeeper ID||Set only when required by the gatekeeper; for example, for configurations with multiple gatekeepers. The value for Gatekeeper ID must match the authorization name configured for the gatekeeper to which the system is registering. Do not configure this preference if the gatekeeper does not require it, as this may result in failure to register with the gatekeeper.||No default|
|Gatekeeper Address||Address of the primary gatekeeper. If UVC Transit serves as an H.460 server, specify the IP address of the UVC Transit signaling server.||No default|
|Gatekeeper Port||Port for the primary gatekeeper.||1719|
|Gatekeeper Authentication||Allows you to specify a username and password for H.235 authentication. Read more about H.323 security.||Disabled|
To disable support for H.323 calls, clear Use H.323 in Preferences > H.323 > General when the system is not in a call.
When you save your changes, the yellow system health indicator appears when your Lifesize system is trying to register with the gatekeeper. If the registration fails, the red indicator appears. Select > for more information about the issue.