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3.2.5.7 Receiving a UdpPacketPair Request

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The server MUST first follow the steps as specified in section 3.2.5.1.

The UdpPacketPair request MUST follow the rules as specified in section 2.2.7.14.

The server SHOULD send three RTP packets containing packet-pair data to the client, or the server MAY send two RTP packets containing packet-pair data to the client. The RTP packets MUST use the RTP payload format for packet-pair data as specified in section 2.2.3.

If the UdpPacketPair request specified the variable-size parameter, the first RTP packet sent by the server SHOULD have a 1,283-byte Payload field. The size of the Payload field of each RTP packet MUST be chosen in accordance with the rules as specified in section 2.2.3.2.<31>

The RTP packets MUST be sent to the v-port.

The UdpPacketPair response MUST follow the rules as specified in sections 3.2.5.2 and 2.2.7.14.

After sending the response, the server MUST wait for another request to be received. Normally, a SelectStream request will be received at this point. How to process this request is specified in section 3.2.5.6.