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Signaling System No. 7 (SS7/C7): Protocol, Architecture, and Services by Jeff Hewett, Lee Dryburgh

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Appendix C. SCCP Messages (ANSI/ETSI/ITU-T)

The table in this appendix summarizes Signaling Connection Control Part (SCCP) messages and the purpose of each. For an introduction to SCCP, refer to Chapter 9, “Signaling Connection Control Part (SCCP).”

Table C-1. SCCP Messages

MESSAGE/CODE

FULL MESSAGE NAME

PURPOSE

KEY: (A)—Messages supported in ANSI SCCP Messages not supported in ETSI SCCP [].cellular network, does not seem place to define them as reader should know them only [2].

(I)—Messages supported in ITU-T SCCP only [60].

(NE)—Messages not supported in ETSI SCCP [10].

(M)—SCCP subsystem management (SCMG). These are transmitted within the data parameter a UDT, XUDT or LUDT message.

CR

0 0 0 0 0 0 0 1

Connection Request

Sent by SCCP to another SCCP ...

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