SS7 ISUP Parameters

The parameters in the SS7 ISUP messages are (5/Q.763 (09/97)):

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
Access delivery information0 0 1 0 1 1 1 0Fix * *
Access transport0 0 0 0 0 0 1 1Var * *
Automatic congestion level0 0 1 0 0 1 1 1Fix * *
Backward call indicators0 0 0 1 0 0 0 1Fix * *
Backward GVNS0 1 0 0 1 1 0 1Fix * *
Call diversion information0 0 1 1 0 1 1 0Fix * *
Call diversion treatment indicators0 1 1 0 1 1 1 0Fix * *
Called IN number0 1 1 0 1 1 1 1Var * *
Called party number0 0 0 0 0 1 0 0Var * *
Call history information0 0 1 0 1 1 0 1Fix *
Calling party number0 0 0 0 1 0 1 0Var * *
Calling party's category0 0 0 0 1 0 0 1Fix * *
Call offering treatment indicators0 1 1 1 0 0 0 0Fix * *
Call reference (national use)0 0 0 0 0 0 0 1Fix *
Call transfer number0 1 0 0 0 1 0 1Var * *
Call transfer reference0 1 0 0 0 0 1 1Fix *
Cause indicators0 0 0 1 0 0 1 0Var * *
CCSS0 1 0 0 1 0 1 1Fix * *
Charged party identification (national use)0 1 1 1 0 0 0 1??? *
Circuit assignment map0 0 1 0 0 1 0 1Fix *
Circuit group supervision message type0 0 0 1 0 1 0 1Fix - *
Circuit state indicator (national use)0 0 1 0 0 1 1 0Var *
Closed user group interlock code0 0 0 1 1 0 1 0Fix
Collect call request0 1 1 1 1 0 0 1Fix
Conference treatment indicators0 1 1 1 0 0 1 0Fix
Connected number0 0 1 0 0 0 0 1Var * *
Connection request0 0 0 0 1 1 0 1Fix
Continuity indicators0 0 0 1 0 0 0 0Fix *
Correlation id0 1 1 0 0 1 0 1Var
Display information0 1 1 1 0 0 1 1Var *
Echo control information0 0 1 1 0 1 1 1Fix *
End of optional parameters0 0 0 0 0 0 0 0Fix *
Event information0 0 1 0 0 1 0 0Fix * *
Facility indicator0 0 0 1 1 0 0 0Fix *
Forward call indicators0 0 0 0 0 1 1 1Fix * *
Forward GVNS0 1 0 0 1 1 0 0Var
Generic digits (national use)1 1 0 0 0 0 0 1Var
Generic notification indicator0 0 1 0 1 1 0 0Fix
Generic number1 1 0 0 0 0 0 0Var
Hop counter0 0 1 1 1 1 0 1Fix
Information indicators (national use)0 0 0 0 1 1 1 1Fix
Information request indicators (national use)0 0 0 0 1 1 1 0Fix
Location number0 0 1 1 1 1 1 1Var
Loop prevention indicators0 1 0 0 0 1 0 0Fix
MCID request indicators0 0 1 1 1 0 1 1Fix
MCID response indicators0 0 1 1 1 1 0 0Fix
Message compatibility information0 0 1 1 1 0 0 0Var
MLPP precedence0 0 1 1 1 0 1 0Fix
Nature of connection indicators0 0 0 0 0 1 1 0Fix * *
Network management controls0 1 0 1 1 0 1 1Fix
Network specific facility0 0 1 0 1 1 1 1Var
Optional backward call indicators0 0 1 0 1 0 0 1Fix * *
Optional forward call indicators0 0 0 0 1 0 0 0Fix * *
Original called number0 0 1 0 1 0 0 0Var * *
Origination ISC point code0 0 1 0 1 0 1 1Fix
Parameter compatibility information0 0 1 1 1 0 0 1Var
Propagation delay counter0 0 1 1 0 0 0 1Fix *
Range and status0 0 0 1 0 1 1 0Var *
Redirect capability (reserved for national use)0 1 0 0 1 1 1 0
Redirect counter (reserved for national use)0 1 1 1 0 1 1 1
Redirecting number0 0 0 0 1 0 1 1Var * *
Redirection information0 0 0 1 0 0 1 1Var * *
Redirection number0 0 0 0 1 1 0 0Var * *
Redirection number restriction0 1 0 0 0 0 0 0Fix
Remote operations0 0 1 1 0 0 1 0Var
SCF id0 1 1 0 0 1 1 0Var
Service activation0 0 1 1 0 0 1 1Var
Signalling point code (national use)0 0 0 1 1 1 1 0Fix * *
Subsequent number0 0 0 0 0 1 0 1Var
Suspend/Resume indicators0 0 1 0 0 0 1 0Fix * *
Transit network selection (national use)0 0 1 0 0 0 1 1Var
Transmission medium requirement0 0 0 0 0 0 1 0Fix * *
Transmission medium requirement prime0 0 1 1 1 1 1 0Fix * *
Transmission medium used0 0 1 1 0 1 0 1Fix * *
UID action indicators0 1 1 1 0 1 0 0Fix
UID capability indicators0 1 1 1 0 1 0 1Fix
User service information0 0 0 1 1 1 0 1Fix * *
User service information prime0 0 1 1 0 0 0 0Fix * *
User teleservice information0 0 1 1 0 1 0 0Fix
User-to-user indicators0 0 1 0 1 0 1 0Fix - *
User-to-user information0 0 1 0 0 0 0 0Var - *

Reserved (used in 1984 version, Red Book)

0 0 0 1 0 1 0 0
0 0 0 1 1 0 0 1
0 0 0 1 1 0 1 1
0 0 0 1 1 1 0 0
0 0 0 1 1 1 1 1
Reserved (used in 1988 version, Blue Book)

0 0 0 1 0 1 1 1
Reserved (used in 1992 version)

0 1 0 0 0 0 0 1
0 1 0 0 0 0 1 0
Reserved for future extension

1 0 0 0 0 0 0 0