SCCP

SCCP Message Format

The Service Indicator of the Service Information Octet (SIO) is coded 3 (binary 0011) for SCCP. SCCP messages are contained within the Signaling Information Field (SIF) of an MSU. The SIF contains the routing label followed by the SCCP message contents. The SCCP message is comprised of a one-octet message type field which defines the contents of the remainder of the message (Fig. 15).