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Appendix B

Message/API Cross-Reference


Introduction
Sending ISUP Protocol Messages
Receiving ISUP Protocol Messages

IntroductionTop of Page

This appendix describes the event initialization routines and API primitive combinations used to send and receive various ISUP protocol messages.

Sending ISUP Protocol MessagesTop of Page

The following table describes the event initialization routine/API primitive combinations used to send various ISUP protocol messages. When applicable, the value required for the evntType argument to the primitive is shown.
Message Type

Mnemonic

Event Initialization Routine

Primitive

Address complete

ACM

ISUPInitACM

ISUPConnectStatusReq

evntType = ADDRCMPLT

Answer

ANM

ISUPInitANM

ISUPConnectResp

Application Transport Message

APM

none

ISUPStatusReq

evntType = APPTRANSPORT

Blocking

BLO

none

ISUPStatusReq

evntType = CIRBLKREQ

Blocking acknowledgement

BLA

none

ISUPStatusReq

evntType = CIRBLKRSP

Call modification complete

CMC

none

ISUPConnectStatusReq

evntType = MODCMPLT

Call modification reject

CMRJ

none

ISUPConnectStatusReq

evntType = MODREJ

Call modification request

CMR

none

ISUPConnectStatusReq

evntType = MODIFY

Call progress

CPG

ISUPInitCPG

ISUPConnectStatusReq

evntType = PROGRESS

Charge information

CRG

none

Unsupported.

Circuit group blocking

CGB

none

ISUPStatusReq

evntType = CIRGRPBLKREQ

Circuit group blocking acknowledgment

CGBA

none

ISUPStatusReq

evntType = CIRGRPBLKRSP

Circuit group query

CQM

none

ISUPStatusReq

evntType = CIRGRPQRYREQ

Circuit group query response

CQR

none

Generated automatically by ISUP task.

Circuit group reset

GRS

none

ISUPStatusReq

evntType = CIRGRPRESREQ

Circuit group reset acknowledgement

GRA

none

Generated automatically by ISUP task.

Circuit group unblocking

CGU

none

ISUPStatusReq

evntType = CIRGRPUNBLKREQ

Circuit group unblocking acknowledgment

CGUA

none

ISUPStatusReq

evntType = CIRGRPUNBLKRSP

Circuit reservation

CRM

ISUPInitCRM

ISUPStatusReq

evntType = CIRRESERVE

Circuit reservation acknowledgement

CRA

none

ISUPStatusReq

evntType = CIRRESERVEACK

Circuit validation response

CVR

none

Generated automatically by ISUP task.

Circuit validation test

CVT

none

isupValidateCircuit

(Management API)

Confusion

CFN

none

Generated automatically by ISUP task.

Connect

CON

ISUPInitCON

ISUPConnectResp

Continuity

COT

ISUPInitCOT

ISUPStatusReq

evntType = CONTREP

Continuity check request

CCR

none

ISUPStatusReq

evntType = CONTCHK

Delayed release

DRS

none

Unsupported.

Exit

EXM

none

Generated automatically by ISUP task.

Facility

FAC

ISUPInitFAC

ISUPFacilityReq

evntType = FACILITY

Facility accepted

FAA

ISUPInitFAA

ISUPFacilityResp

evntType = FACILITYACC

Facility reject

FRJ

ISUPInitFRJ

ISUPFacilityResp

evntType = FACILITYREJ

Facility request

FAR

ISUPInitFAR

ISUPFacilityReq

evntType = TACILITYREQ

Facility deactivate

FAR

ISUPInitFAD

ISUPFacilityReq

evntType = FACILITYDEACT

Facility Information

FAR

ISUPInitFAI

ISUPFacilityReq

evntType = FACILITYINFO

Forward transfer

FOT

ISUPInitFOT

ISUPConnectStatusReq

evntType = FRWDTRSFR

Identification request

IDM

none

ISUPConnectStatusReq

evntType = IDENTRSP

Identification response

IDR

none

ISUPConnectStatusReq

evntType = IDENTREQ

Information

INF

ISUPInitINF

ISUPConnectStatusReq

evntType = INFORMATION

Information request

INR

ISUPInitINR

ISUPConnectStatusReq

evntType = INFORMATREQ

Initial address

IAM

ISUPInitIAM

ISUPConnectReq

Loop Prevention

LOP

none

ISUPStatusReq

evntType = LOOPPREVENTION

Loopback acknowledgement

LPA

none

ISUPStatusReq

evntType = LOOPBCKACK

Network Resource Manager

NRM

none

ISUPConnectStatusReq

evntType = NETRESMGR

Overload

OLM

none

Generated automatically by ISUP task.

Pass-along

PAM

ISUPDataReq

Pre-Release Information

PRI

none

ISUPStatusReq

evntType = PRERELEASE

Release

REL

ISUPInitREL

ISUPReleaseReq

Release complete

RLC

none

ISUPReleaseResp

Reset circuit

RSC

none

ISUPStatusReq

evntType = CIRRESREQ

Resume

RES

ISUPInitRES

ISUPResumeReq

Subsequent address

SAM

ISUPInitSAM

ISUPConnectStatusReq

evntType = SUBSADDR

Suspend

SUS

ISUPInitSUS

ISUPSuspendReq

Unblocking

UBL

none

ISUPStatusReq

evntType = CIRUNBLKREQ

Unblocking acknowledgement

UBA

none

ISUPStatusReq

evntType = CIRUNBLKRSP

Unequipped circuit identification code

UCIC

none

Generated automatically by ISUP task.

User part available

UPA

none

Generated automatically by ISUP task.

User part test

UPT

none

Generated automatically by ISUP task.

User-to-user information

USR

N/A?

ISUPDataReq

Receiving ISUP Protocol MessagesTop of Page

evntType/indType combinations seen when receiving ISUP protocol messages.
Message Type

Mnemonic

indType

evntType

Address complete

ACM

EVTSITCNSTIND

ADDRCMPLT

Answer

ANM

EVTSITCONCFM

N/A?

Application transport message

APM

EVTSITSTAIND

APPTRANSPORT

Blocking

BLO

EVTSITSTAIND

CIRBLKREQ

Blocking acknowledgement

BLA

EVTSITSTAIND

CIRBLKRSP

Call modification complete

CMC

EVTSITCNSTIND

MODCMPLT

Call modification reject

CMRJ

EVTSITCNSTIND

MODREJ

Call modification request

CMR

EVTSITCNSTIND

MODIFY

Call progress

CPG

EVTSITCNSTIND

PROGRESS

Charge information

CRG

N/A

Unsupported.

Circuit group blocking

CGB

EVTSITSTAIND

CIRGRPBLKREQ

Circuit group blocking acknowledgment

CGBA

EVTSITSTAIND

CIRGRPBLKRSP

Circuit group query

CQM

N/A

Handled automatically by ISUP task.

Circuit group query response

CQR

EVTSITSTAIND

CIRGRPQRYRSP

Circuit group reset

GRS

EVTSITSTAIND

CIRGRPRESREQ

Circuit group reset acknowledgement

GRA

EVTSITSTAIND

CIRGRPRESACK

Circuit group unblocking

CGU

EVTSITSTAIND

CIRGRPUNBLKREQ

Circuit group unblocking acknowledgment

CGUA

EVTSITSTAIND

CIRGRPUNBLKRSP

Circuit reservation

CRM

EVTSITSTAIND

CIRRESERVE

Circuit reservation ack

CRA

EVTSITSTAIND

CIRRESERVEACK

Circuit validation response

CVR

N/A

Handled automatically by ISUP task.

Circuit validation test

CVT

N/A

Handled automatically by ISUP task.

Confusion

CFN

EVTSITSTAIND

CONFUSION

Connect

CON

EVTSITCONCFM

Continuity

COT

EVTSITSTAIND

CONTREP

Continuity check request

CCR

EVTSITSTAIND

CONTCHK

Delayed release

DRS

N/A

Unsupported.

Exit

EXM

EVTSITCNSTIND

EXIT

Facility

FAC

EVTSITFACIND

FACILITY

Facility accepted

FAA

EVTSITFACIND

FACILITYACC

Facility reject

FRJ

EVTSITFACIND

FACILITYREJ

Facility request

FAR

EVTSITFACIND

FACILITYEQ

Facility deactivate

FAD

EVTSITFACIND

FACILITYDEACT

Facility information

FAI

EVTSITFACIND

FACILITYINFO

Forward transfer

FOT

EVTSITCNSTIND

FRWDTRSFR

Identification request

IDM

EVTSITCNSTIND

IDENTRSP

Identification response

IDR

EVTSITCNSTIND

IDENTREQ

Information

INF

EVTSITCNSTIND

INFORMATION

Information request

INR

EVTSITCNSTIND

INFORMATREQ

Initial address

IAM

EVTSITCONIND

Loop prevention

LOP

EVTSITSTAIND

LOOPPREVENTION

Loopback acknowledgment

LPA

EVTSITSTAIND

LOOPBCKACK

Network Resource Manager

NRM

EVTSITCNSTIND

NETRESMGR

Overload

OLM

N/A

Handled automatically by ISUP task.

Pass-along

PAM

EVTSITDATIND

Release

REL

EVTSITRELIND

Release complete

RLC

EVTSITRELCFM

Reset circuit

RSC

EVTSITSTAIND

CIRRESREQ

Resume

RES

EVTSITRESMIND

Subsequent address

SAM

EVTSITCNSTIND

SUBSADDR

Suspend

SUS

EVTSITSUSPIND

Unblocking

UBL

EVTSITSTAIND

CIRUNBLKREQ

Unblocking ack

UBA

EVTSITSTAIND

CIRUNBLKRSP

Unequipped circuit identification code

UCIC

EVTSITSTAIND

CIRUNEQPD

User part available

UPA

N/A

Handled automatically by ISUP task.

User part test

UPT

N/A

Handled automatically by ISUP task.

User-to-user information

USR

EVTSITDATIND



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