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This is done cost codes of frame structure from those messages before sending to LAPV5-EF through communication between sublayer on layer Data Link.

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Posted by waqasahmad

Identifies the type of frame which will be either a command or response. The control field contains sequence numbers, where applicable.

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Posted by HamidAliKhan

For details:

www.protocols.com/pbook/v5.htm

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Posted by sagitraz

It defines peer-to-peer exchanges of information between the an and the le.

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Posted by waqqas1

The LAPV5 data link sublayer defines peer-to-peer exchanges of information between the AN and the LE. LAPV5-DL frames can be either with or without with an Information field.

Link address
The V5 Data link address is a 13-bit number Values in the range of 0 up to 8175 shall not be used to identify a layer 3 protocol entity, because that range is used for identifying ISDN user ports.
Control
Identifies the type of frame which will be either a command or response. The control field contains sequence numbers, where applicable.
Information
An integer number of octets. The maximum number of octets in the information field is 260.

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Posted by mitchel