SS7 SCCP Parameters

Parameters in the SS7 SCCP messages (2/Q.713 (07/96)):

F  =  mandatory fixed length parameter;
V  =  mandatory variable length parameter;
O  =  optional parameter of fixed or variable length;
- the length of the parameter.

For each message type, type F parameters and the pointers for the type V parameters must be sent in the order specified in these tables. The routing label and circuit identification code fields, which are transmitted ahead of the message type field if required, are not shown. Parameter names, pointers to mandatory variable fields and the optional part, and length indicators appear in the m essage in accordance with Figure 3 and are not shown explicitly in Tables 21 to 50.

Parameter nameShort id.CodeType
Called party address0 0 0 0 0 0 1 1Var
Calling party address0 0 0 0 0 1 0 0Var
Credit0 0 0 0 1 0 0 1Var
Data0 0 0 0 1 1 1 1Fix
Destination local reference0 0 0 0 0 0 0 1Fix
End of optional parameters0 0 0 0 0 0 0 0Fix
Error cause0 0 0 0 1 1 0 1Fix
Hop counter0 0 0 1 0 0 0 1Fix
Importance0 0 0 1 0 0 1 0Fix
Long data0 0 0 1 0 0 1 1Fix
Protocol class0 0 0 0 0 1 0 1Fix
Receive seguence number0 0 0 0 0 1 1 1Fix
Refusal cause0 0 0 0 1 1 1 0Fix
Release cause0 0 0 0 1 0 1 0Fix
Reset cause0 0 0 0 1 1 0 0Fix
Return cause0 0 0 0 1 0 1 1Fix
Segmentation0 0 0 1 0 0 0 0Fix
Segmenting/reassembling0 0 0 0 0 1 1 0Fix
Sequencing/segmenting0 0 0 0 1 0 0 0Fix
Source local reference0 0 0 0 0 0 1 0Fix