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Configuring SIP endpoints

To configure the SIP endpoints to work with the IP VCR, go to Endpoints > Add SIP. This makes it easier to call out to endpoints because you can select names from a list rather than adding network addresses. (For information about SIP endpoints, see Configuring H.323 endpoints.)

Refer to the table below for tips on adding a SIP endpoint to the IP VCR. After entering the settings, click Add endpoint. The endpoint appears in the Endpoint list.

 

Field Field description Usage tips
Name

The name of the endpoint.

 
Address

The IP address, host name, or SIP URI (in the format 1234@cisco.com).

The address of the SIP endpoint can be a directory number if you are using a SIP registrar.

Use SIP registrar

Allows calls to this endpoint to use a directory number (in the Address field) and the SIP registrar.

If you have this enabled, you must configure the SIP registrar on the Settings > SIP page.

Call-in match parameters

These fields are used to identify incoming calls as being from the endpoint.

The endpoint is recognized if all filled-in fields in this section are matched. Fields left blank are not considered in the match.

Note that in some cases a SIP registrar can cause a call to appear to come from the IP address of the registrar rather than the IP address of the endpoint. In this case, to use call-in match parameters, leave the IP address field blank and enter the correct username. The call will be matched by username.

When using LCS, the username that will be matched is the user's display name (e.g. Peter Rabbit) rather than the sign-in name (bluecoat@cisco.com).

Motion / sharpness trade off

Choose whether to use the box-wide setting for motion/sharpness trade off, or configure an individual setting for this endpoint. Choose from:

  • Use box-wide setting: this is the default value. In this case, the endpoint will use the motion/sharpness tradeoff setting from the Settings > Connections page
  • Favor motion: the IP VCR will try and use a high frame rate. That is, the IP VCR will strongly favor a resolution of at least 25 frames per second
  • Favor sharpness: the IP VCR will use the highest resolution that is appropriate for what is being viewed
  • Balanced: the IP VCR will select settings that balance resolution and frame rate (where the frame rate will not be less than 12 frames per second)

The settings for motion (frames per second) and sharpness (frame size or resolution) are negotiated between the endpoint and the IP VCR. This setting controls how the IP VCR will negotiate the settings to be used with this endpoint.

Transmitted video resolutions

Choose the setting for transmitted video resolutions from the IP VCR to this endpoint. This setting overrides the unit-wide/blade-wide setting on the Settings > Connections page.

Retain the default setting (use box-wide setting) unless you are experiencing problems with the display of certain resolutions by this endpoint.

Endpoints advertise the resolutions that they are able to display. The IP VCR then chooses from those advertised resolutions, the resolution that it will use to transmit video. However, some endpoints do not display widescreen resolutions optimally. Therefore, you might want to use this setting to restrict the resolutions available to the IP VCR for transmissions to this endpoint.

Content receive

Whether this endpoint is allowed to receive a separate content stream when playing back a stored recording.

 

Preferred bandwidth from IP VCR

The network capacity (measured in bits per second) used by the media channels established by the IP VCR to a single participant.

These settings take priority over the Default bandwidth from IP VCR setting configured in the global Connection settings (see Connection settings).

Preferred bandwidth to IP VCR

The maximum combined media bandwidth advertised by the IP VCR to endpoints.

These settings take priority over the Default bandwidth to IP VCR setting configured in the global Connection settings (see Connection settings).

Custom codec selection

Can be used to ensure only specific codecs are permitted on calls to (and received from) this endpoint.

Select Enabled, to display fields in which you can choose which codecs are used when communicating with this endpoint. When Enabled, this setting overrides the unit-wide/blade-wide codec selection on the Settings > Connections page.

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