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Configuring Default Values for H.248 Segmentation Properties

You can configure default values for properties defined in the H.248 segmentation package. The VPG uses these values unless the PGC overrides them with a PGCP command. In general, we recommend you use the values that are configured on the router by default.

The segmentation package is defined in annex E.14 of the Gateway control protocol v3, ITU T Recommendation H.248.1, September 2005. The properties in this package affect the limits used when long H.248 replies are segmented into several H.248 messages.

Step-by-Step Procedure

To configure default values for H.248 segmentation properties:

  1. Access the configuration of the H.248 segmentation properties.
    [edit services pgcp ]
    user@host#edit gateway vpg-1 h248-properties segmentation
  2. Set a default value for the number of milliseconds for the PGC to wait for outstanding message segments from the VPG after it receives the SegmentationCompleteToken message.
    [edit services pgcp gateway vpg-1 h248-properties segmentation]
    user@host#set mg-segmentation-timer default 4000
  3. Set a default value, in bytes, for the MG maximum PDU size property of the segmentation package. This value determines the maximum size of messages that the PGC sends to the packet gateway.
    [edit services pgcp gateway vpg-1 h248-properties segmentation]
    user@host#set mg-maximum-pdu-size default 1472
  4. Set a default value for the number of milliseconds for the VPG to wait for outstanding message segments from the PGC after it receives the SegmentationCompleteToken.
    [edit services pgcp gateway vpg-1 h248-properties segmentation]
    user@host#set mgc-segmentation-timer default 4000
  5. Set a default value, in bytes, for the MGC maximum PDU size property of the segmentation package. This value determines the maximum size of messages that the VPG sends to the PGC.
    [edit services pgcp gateway vpg-1 h248-properties segmentation]
    user@host#set mgc-maximum-pdu-size default 1472

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