Sequence Numbers Clause Samples

Sequence Numbers. The value of the sequence number field (the sequence number of the DCP data PDU) shall begin with “1” and increment modulo 256 on successive DCP data PDUs that contain data fields. This number shall be relative to the context used. On receipt of a DCP data PDU with the R-A bit set to “0”, if the sequence number of the DCP data PDU is any number other than (N+1) mod 256, where N is the sequence number of the last DCP data PDU received for the same context, or an initial value of “0”, a receive failure for that