A server implementation MUST NOT accept the OUT_R2/A4 RTS PDU in any state other than Opened_A4W. If this condition is not met, the server MUST treat this PDU as a protocol error as specified in section

If this RTS PDU is received in Opened_A4W state, an implementation of this protocol MUST perform the following actions in the sequence given:

  1. Transition to Opened_R2A8W state.

  2. Send OUT_R2/A5 RTS PDU on the OUT channel to the outbound proxy.

  3. Store the SuccessorChannelCookie from this PDU in the Non Default Out Channel Cookie in the server Virtual Connection.