ISUP Message Type Table


ACM Address Complete 00000110
ANM Answer 00001001
BLO Blocking 00010011
BLA Blocking Acknowledgment 00010101
CMC Call Modification Completed 00011101*
CMRJ Call Modification Reject 00011110*
CMR Call Modification Request 00011100*
CPG Call Progress 00101100
CGB Circuit Group Blocking 00011000
CGBA Circuit Group Blocking Acknowledgment 00011010
CQM Circuit (Group) Query 00101010
CQR Circuit (Group) Query Response 00101011
GRS Circuit Group Reset 00010111
GRA Circuit Group Reset Acknowledgment 00101001
CGU Circuit Group Unblocking 00011001
CGUA Circuit Group Unblocking Acknowledgment 00011011
CRM Circuit Reservation 11101010*
CRA Circuit Reservation Acknowledgment 11101001*
CVR Circuit Validation Response 11101011*
CVT Circuit Validation Test 11101100*
CSVR CUG Selection and Validation Request 00100101*
CSVS CUG Selection and Validation Response 00100110*
CRG Charge Information 00110001**
CFN Confusion 00101111
CON Connect 00000111
COT Continuity 00000101
CCR Continuity Check Request 00010001
DRS Delayed Release 00100111*
EXM Exit 11101101*
FAC Facility 00110011
FAA Facility Accepted 00100000
FAD Facility Deactivated 00100010*
FAI Facility Information 00100011*
FRJ Facility Reject 00100001
FAR Facility Request 00011111
FOT Forward Transfer 00001000
IDR Identification Request 00110110**
IRS Identification Response 00110111**
IAM Initial Address Message 00000001
INF Information 00000100
INR Information Request 00000011
LPA Loop Back Acknowledgment 00100100
NRM Network Resource Management 00110010
OLM Overload 00110000
PAM Pass-along 00101000
REL Release 00001100
RLC Release Complete 00010000
RSC Reset Circuit 00010010
RES Resume 00001110
SGM Segmentation 00111000
SAM Subsequent Address 00000010
SUS Suspend 00001101
UBL Unblocking 00010100
UBA Unblocking Acknowledgment 00010110
UCIC Unequipped CIC 00101110
UPA User Part Available 00110101
UPT User Part Test 00110100
USR User-to-user Information 00101101

* ANSI-ISUP only
** ITU-ISUP only