LifeSize Room User Manual page 25

Specifying H.323 Settings
To make a call using a name or extension with the H.323 protocol you must set the H.323
preferences (select Administrator Preferences : H.323). Enter the name and extension of
the device used when making calls with H.323. These are optional values that identify the
device to the gatekeeper. Any registered device can dial another using this ID and phone
number.
H.323 Name
H.323 Extension
If the system is registered to a gatekeeper, the system displays its status. If you wish
LifeSize Room to automatically discover an H.323 gatekeeper set the Gatekeeper Mode
preferences to Auto. You can also set the gatekeeper to Manual to manually choose a
gatekeeper. If set to Manual, specify the IP address and port for the primary gatekeeper.
Configuration of a secondary H.323 gatekeeper is optional.
Set the Gatekeeper ID only if the gatekeeper requires it (for example, configurations with
multiple gatekeepers). The Gatekeeper ID must match the Gatekeeper ID configured on 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.
You can also enable H.245 tunneling to avoid creating an extra TCP connection for H.245
negotiation. To set H.245 preferences, access Administrator Preferences :
Communications : H.245 Tunneling.
Note: If you wish to display presentations (as described in "Presentations" on
page 18), disable H.245 Tunneling. This preference is disabled by default.
Configuring SIP Settings
Session Initiation Protocol (SIP) is the Internet Engineering Task Force's (IETF's) standard
for multimedia conferencing over IP. SIP is an ASCII-based, application-layer control
protocol that establishes, maintains, and terminates calls between two or more devices.
To configure SIP as the protocol to use for placing calls, select the SIP button in the
Administrator Preferences. You can then configure the SIP server or advanced SIP
preferences.
LifeSize Room User Guide
Also referred to as H.323 ID. This optional value 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, this field should contain that ID.
This optional value is used when a Gatekeeper is configured and requires
the system to register with an E164 number or extension. If the
Gatekeeper Administrator assigns an E164 number or extension for the
system, this field should contain that number.
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