LifeSize Passport User Manual page 45

by choosing Disabled for the SIP preference when the system is not in a call. If you choose
Disabled for the SIP preference, the system cannot place or receive calls with the SIP
protocol.
Note: If both H.323 and SIP preferences are set to Disabled, a warning message appears
and indicates that video calls cannot be placed or received with this configuration.
For the server, enter the username, SIP server authorization name, and password for the
device, if required. The authorization name and password are the values the LifeSize
system uses for authentication; these values are only required if the registrar or proxy
require authentication.
If you are planning on placing and receiving calls on LifeSize Passport with Microsoft Office
Communications Server, LifeSize recommends that administrators choose Microsoft OCS
for SIP Server Type in Administrator Preferences : Communications : SIP. The default is
Auto. For more information about using Microsoft OCS with LifeSize communications
devices, refer to the technical note on the Support page of www.lifesize.com.
You can change the communication path to use when registering with a SIP Registrar, either
directly or through a proxy and configure proxy settings. SIP devices use register settings to
dynamically register their current location.
When you select the Register button and press OK, icons appear in the status bar to
indicate the status of the registration process with the SIP server. The yellow SIP icon
appears when your LifeSize system is trying to register with the SIP server. If the registration
fails, the red SIP icon
You can change the SIP UDP signaling port. You can also enable TCP signaling and change
the TCP signaling port. You can enable Transport Layer Security (TLS) signaling and
change the TLS signaling port only if the SIP Registrar preference is set to Enabled. TCP
signaling and TLS signaling are mutually exclusive. Enabling one automatically disables the
other. Choosing Disabled for the SIP Registrar preference automatically disables TLS
signaling. If neither TCP nor TLS signaling is enabled, only UDP signaling is enabled.
Note: The system reboots if you change the UDP signaling port, enable or disable TCP or
TLS signaling, or change the TCP or TLS signaling ports.
If you enable TLS signaling, the system attempts to use Secure Real-time Transport
Protocol (SRTP) for media encryption in SIP calls. If the far side supports SRTP, the media
is encrypted and encryption icons appear in the caller ID, Call Manager list, and Call
Statistics list in the user interface during a call. Refer to "Caller ID" on page 16 for a
description of the icons. If the far end does not support SRTP, the media is not encrypted
and call encryption icons do not appear in the user interface.
LifeSize Passport User Guide
appears.
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