Configuring Quality of Service
You can specify network Quality of Service (QoS) settings in the Administrator
Preferences : Network : Network QoS preferences. Set these preferences according to the settings used in your network.
Note: Network QoS preferences are supported with IPv4 addressing only. If you enable
IPv6 addressing on your LifeSize system, QoS preferences are ignored for IPv6
calls. For more information about IPv6 addressing, refer to "Enabling IPv6
Addressing" on page 16.
You can specify DiffServ (differentiated services) or IntServ (integrated services) values for audio, video, and data packets. You can also set the IntServ Type of Service (ToS) preference. By default, Network QoS and IntServ ToS are set to None.
Configuring LifeSize Transit Preferences
If you are using LifeSize Transit with your LifeSize video communications system, refer to your LifeSize Transit documentation for information about how to configure preferences in
Administrator Preferences : Network : LifeSize Transit.
Configuring Communications Preferences
You can specify options that control which protocols the system uses during calls by configuring preferences in Administrator Preferences : Communications.
Disabling Multiway Calling
You can disable multiway calling on LifeSize systems by choosing Disabled for the Multiway
Calls preference in Administrator Preferences : Communications : General. The default,
Enabled, allows users to place multiway calls up to the maximum number supported by the system. You can configure this preference only when the system is not in a call. Choosing
Disabled allows only one call, voice or video, to connect to the system.
If the system includes an embedded multipoint bridge, the One Video + One Voice option also appears for this preference. This option allows the system to connect to both a video and a voice call as the maximum number of connected callers.
Configuring Dialing Options
You can choose voice and video dialing options during the initial configuration, when performing a system reset, or at any other time by accessing Administrator Preferences :
Communications : General. Refer to the Installation Guide for your LifeSize system model for more information about these preferences.
20 LifeSize Video Communications Systems Administrator Guide
Disabling PSTN
On LifeSize systems that support PSTN connectivity, you can disable support for placing and receiving PSTN calls by choosing Disabled for the PSTN preference in Administrator
Preferences : Communications : General. You can configure this preference only when the system is not in a call.
Enabling Presentations
Users can share data during a call through a secondary H.239 media channel, typically from a laptop or personal computer that is connected to the appropriate input on the LifeSize codec. By default, the presentation function is enabled on a LifeSize system. To disable presentations access Administrator Preferences : Communications : General :
Presentations. Consider disabling the presentation function if your system experiences interoperability issues with third party systems that do not support presentations.
Note: When presentations are disabled for all participants during a call, the user interface offers the user the option to send video from the presentation input as the primary video stream. Refer to the LifeSize Video Communications Systems User Guide for more information about presentations and selecting primary and presentation inputs.
Manually Starting a Presentation
If the Presentations preference is set to Enabled (the default), a presentation starts automatically during a call if a user connects a video input device other than a
LifeSize Camera, LifeSize Camera 200, or LifeSize Focus to the codec and the video input device is not selected as the primary input. The user interface switches the presentation input to this video input and starts the presentation. The presentation stops automatically if the video input device is disconnected during the call. You can choose Manual for the Auto
Start Presentation preference in Administrator Preferences : Communications :
General to allow users to start a presentation manually.
LifeSize Video Communications Systems Administrator Guide 21
Supported VGA and DVI-I Input Resolutions
LifeSize systems support native 16:9 and 4:3 VGA and DVI-I inputs. The System
Information screen shows the actual VGA or DVI-I input size for VGA Input or DVI-I Input.
The input selector shows a 16:9 or 4:3 window for the input depending on the aspect ratio.
The following table shows the supported VGA and DVI-I input resolutions by system model.
Resolution Behavior LifeSize Model
640 x 480 scaled to 1024 x 768
800 x 600
1024 x 768
1280 x 720
1280 x 768 native (no system changes) scaled to 1024 x 768 native (no system changes) native (no system changes) native (no system changes) native (no system changes)
LifeSize Room
LifeSize Team MP
LifeSize Express
LifeSize Room 200
LifeSize Room 220
LifeSize Team 200
LifeSize Team 220
LifeSize Express 200
LifeSize Express 220
LifeSize Room
LifeSize Team MP
LifeSize Express
LifeSize Room 200
LifeSize Room 220
LifeSize Team 200
LifeSize Team 220
LifeSize Express 200
LifeSize Express 220
All models
All models a
All models a
22 LifeSize Video Communications Systems Administrator Guide
Resolution
1280 x 1024
Behavior LifeSize Model scaled to 1024 x 768, aspect ratio distorted to fit
LifeSize Room
LifeSize Team MP
LifeSize Express native (no system changes) LifeSize Room 200
LifeSize Room 220
LifeSize Team 200
LifeSize Team 220
LifeSize Express 200
LifeSize Express 220 a. The largest 4:3 resolution supported is 1024x768 on LifeSize Room, LifeSize Team MP, and
LifeSize Express; and 1280x1024 on LifeSize Room 200, LifeSize Room 220, LifeSize Team 200,
LifeSize Team 220, LifeSize Express 200, and LifeSize Express 220.
The resolutions are sent natively to the far end for the primary or secondary video streams.
The resolutions may not exactly match due to H.264 or H.263 protocol resolution constraints. These resolutions are supported only with a screen refresh rate set to 60 Hertz on the device connected to the VGA or DVI-I input.
Following are the supported input resolutions and frame rates for video sent to the DVI-I input from an HDMI source:
• 480p60
• 576p50
• 720p60
• 1080p30 (available only on LifeSize systems that support 1080p30 output)
If audio is sent to the DVI-I input from an HDMI source, the audio is sent to the near end speakers and to the far end when the DVI-I input is selected as the primary or presentation video input.
For more information about configuring the DVI-I input, refer to
"Configuring HD In and DVI-I In" on page 45.
LifeSize Video Communications Systems Administrator Guide 23
Specifying H.323 Settings
By default, LifeSize systems support the H.323 protocol for placing and receiving video and voice calls. You can disable support for H.323 calls by selecting Disabled for the H.323 preference in Administrator Preferences : Communications : H.323 when the system is not in a call. If you choose Disabled for the H.323 preference, the system cannot place or receive calls with the H.323 protocol.
Note: If both H.323 and SIP preferences are set to Disabled and LifeSize Networker is not connected to the system, a warning message appears and indicates that video calls
cannot be placed or received with this configuration. Refer to "Configuring SIP
Settings" on page 25 for more information about SIP preferences.
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. The H.323 Name preference is an 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 H.323 Name preference. The H.323 Extension preference is an optional value that 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, enter that number for the H.323 Extension preference.
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 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.
Set the Gatekeeper Mode preference to Auto if you wish to have the system automatically discover a gatekeeper. You can also set the Gatekeeper Mode preference to Manual to manually choose a gatekeeper. If set to Manual, specify the IP address and port for the primary gatekeeper.
When you select the Register button in Administrator Preferences : Communications :
H.323, icons appear in the status bar to indicate the status of the registration process with the H.323 gatekeeper. The yellow H.323 icon appears when your LifeSize system is trying to register with the gatekeeper. If the registration fails, the red H.323 icon appears. If the system is registered to a gatekeeper, the system displays its status.
To navigate to the second page of H.323 preferences, press on the remote control.
Configuring a secondary H.323 gatekeeper with the Gatekeeper IP Address 2 and
Gatekeeper Port 2 preferences is optional.
24 LifeSize Video Communications Systems Administrator Guide
Enabling H.460 Support for H.323 Calls
LifeSize systems support firewall traversal of H.323 calls using H.460 protocols. You must have an H.460 server configured in your environment for this feature to function properly.
Note: If you configure H.323 settings and enable H.460 support, the system ignores preferences in Administrator Preferences : Network : NAT.
To enable H.460 client support on a LifeSize system, configure the H.323 preferences in
Administrator Preferences : Communications : H.323 as described in "Specifying H.323
Settings" on page 24 with the following exceptions:
1. Choose Manual for the Gatekeeper Mode preference.
2. For the Gatekeeper IP Address 1 and Gatekeeper Port 1 preferences, enter the IP address and port number of the H.460 server that is configured in your environment.
3. Choose Enabled for the H.460 preference.
4. Navigate to Register and press OK.
Note: If you enable H.460 and specify the IP address and port number of a secondary gatekeeper with the Gatekeeper IP Address 2 and Gatekeeper Port 2 preferences, the system ignores the secondary gatekeeper.
Configuring SIP Settings
By default, support for Session Initiation Protocol (SIP) is enabled on LifeSize systems. To configure SIP as the protocol to use for placing calls, configure SIP preferences in
Administrator Preferences : Communications : SIP. You can also disable support for SIP 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 SIP and H.323 preferences are set to Disabled and LifeSize Networker is not connected to the system, a warning message appears and indicates that video calls
cannot be placed or received with this configuration. Refer to "Specifying H.323
Settings" on page 24 for more information about H.323 preferences.
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.
LifeSize Video Communications Systems Administrator Guide 25
If you plan to use Microsoft Office Communications Server 2007 for SIP calls with your
LifeSize communications system, LifeSize recommends that you choose Microsoft OCS for
SIP Server Type. The default is Auto. Refer to the Release Notes for information about supported Microsoft Office Communications Server 2007 versions. Refer to the LifeSize technical note Using LifeSize Systems with Microsoft Office Communications Server 2007 for information about how to configure your environment and SIP preferences on your
LifeSize video communications system.
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 appears.
To navigate to the second page of SIP preferences, press on the remote control.
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 the LifeSize Video Communications
Systems User Guide 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.
26 LifeSize Video Communications Systems Administrator Guide
