LifeSize Video Communications Systems User Guide 7
Configuring Your Phone for Use with SIP
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, access the administrator
preferences as described in ”Advanced Configuration” on page 5, or access these
preferences from a web browser as described in ”Configuration from a Web Browser” on
page 6. From the Communications : SIP : General menu, enter the username, SIP server
authorization name, and password for the device, if required. The authorization name and
password are the values LifeSize Phone uses for authentication; these values are only
required if the registrar or proxy require authentication.
You can also configure the SIP registrar and proxy settings to enable and configure the SIP
proxy and SIP registrar (from the Communications : SIP : Proxy and Registrar menus).
SIP devices use register settings to dynamically register their current location. Advanced
SIP preferences enable you to change the SIP UDP or TCP signaling ports and the
communication path to use for SIP registration.
Configuring Your Phone for Use with H.323
To make a call using a name or extension with the H.323 protocol you must set the H.323
preferences (access the administrator preferences as described in ”Advanced
Configuration” on page 5, or access these preferences from a web browser as described in
”Configuration from a Web Browser” on page 6.). From the Communications : H.323 :
General menu, 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.
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.
H.323 Name 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.
H.323 Extension 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 asCsigns an E164 number or extension for the
system, this field should contain that number.