| Test-set id. (ISUP exceptions) | Message type | Short name | ------Code------ | Comment |
|---|---|---|---|---|
| AddressComplete | Address complete | ACM | 0 0 0 0 0 1 1 0 | ISUP-R |
| Answer | Answer | ANM | 0 0 0 0 1 0 0 1 | ISUP-R |
| Blocking | Blocking | BLO | 0 0 0 1 0 0 1 1 | ISUP-R |
| BlockingAck | Blocking acknowledgement | BLA | 0 0 0 1 0 1 0 1 | ISUP-R |
| CallProgress | Call progress | CPG | 0 0 1 0 1 1 0 0 | ISUP-R |
| CircGrpBlocking | Circuit group blocking | CGB | 0 0 0 1 1 0 0 0 | ISUP-R LP |
| CircuitGrpBloAck | Circuit group blocking acknowledgement | CGBA | 0 0 0 1 1 0 1 0 | ISUP-R LP |
| CircuitGrpQuery | Circuit group query | CQM | 0 0 1 0 1 0 1 0 | national use LP |
| CircGrpQueryResp | Circuit group query response | CQR | 0 0 1 0 1 0 1 1 | national use LP |
| CircuitGrpReset | Circuit group reset | GRS | 0 0 0 1 0 1 1 1 | ISUP-R LP |
| CircGrpResetAck | Circuit group reset acknowledgement | GRA | 0 0 1 0 1 0 0 1 | ISUP-R LP |
| CircGrpUnblocki | Circuit group unblocking | CGU | 0 0 0 1 1 0 0 1 | ISUP-R LP |
| CircGrpUnblocAck | Circuit group unblocking acknowledgement | CGUA | 0 0 0 1 1 0 1 1 | ISUP-R LP |
| ChargeInfo | Charge information | CRG | 0 0 1 1 0 0 0 1 | national use, ISUP-R LP |
| ClearCallingLine | Clear calling line | CCL | 1 1 1 1 1 1 0 0 | ISUP-R only LP |
| Confusion | Confusion | CFN | 0 0 1 0 1 1 1 1 | |
| Connect | Connect | CON | 0 0 0 0 0 1 1 1 | ISUP-R |
| Continuity | Continuity | COT | 0 0 0 0 0 1 0 1 | ISUP-R |
| ContiCheckReq | Continuity check request | CCR | 0 0 0 1 0 0 0 1 | ISUP-R |
| Delayed release (reserved - used in 1988 version) | DRS | |||
| Facility | Facility | FAC | 0 0 1 1 0 0 1 1 | |
| FacilityAccepted | Facility accepted | FAA | 0 0 1 0 0 0 0 0 | |
| FacilityReject | Facility reject | FRJ | 0 0 1 0 0 0 0 1 | |
| FacilityRequest | Facility request | FAR | 0 0 0 1 1 1 1 1 | |
| ForwardTransfer | Forward transfer | FOT | 0 0 0 0 1 0 0 0 | ISUP-R |
| IdentificRequest | Identification request | IDR | 0 0 1 1 0 1 1 0 | |
| IdentificResp | Identification response | IRS | 0 0 1 1 0 1 1 1 | |
| Information | Information | INF | 0 0 0 0 0 1 0 0 | national use, ISUP-R LP |
| InformationReq | Information request (national use) | INR | 0 0 0 0 0 0 1 1 | ISUP-R LP |
| InitialAddress | Initial address | IAM | 0 0 0 0 0 0 0 1 | ISUP-R |
| LoopBackAck | Loop back acknowledgement (national use) | LPA? | 0 0 1 0 0 1 0 0 | LP |
| LoopPrevention | Loop prevention | LOP | 0 1 0 0 0 0 0 0 | LP |
| NetworkResManage | Network resource management | NRM | 0 0 1 1 0 0 1 0 | |
| Overload | Overload (national use) | OLM | 0 0 1 1 0 0 0 0 | LP |
| PassAlong | Pass-along (national use) | PAM | 0 0 1 0 1 0 0 0 | LP |
| Release | Release | REL | 0 0 0 0 1 1 0 0 | ISUP-R |
| ReleaseComplete | Release complete | RLC | 0 0 0 1 0 0 0 0 | ISUP-R |
| ResetCircuit | Reset circuit | RSC | 0 0 0 1 0 0 1 0 | ISUP-R |
| Resume | Resume | RES | 0 0 0 0 1 1 1 0 | ISUP-R |
| Ringing | Ringing | RNG | 1 1 1 1 1 1 1 1 | ISUP-R only LP |
| Segmentation | Segmentation | SGM | 0 0 1 1 1 0 0 0 | |
| SubsequentAddr | Subsequent address | SAM | 0 0 0 0 0 0 1 0 | ISUP-R |
| Suspend | Suspend | SUS | 0 0 0 0 1 1 0 1 | ISUP-R |
| Unblocking | Unblocking | UBL | 0 0 0 1 0 1 0 0 | ISUP-R |
| UnblockingAck | Unblocking acknowledgement | UBA | 0 0 0 1 0 1 1 0 | ISUP-R |
| UnequippedCIC | Unequipped CIC (national use) | UCIC | 0 0 1 0 1 1 1 0 | |
| UserPartAvail | User Part available | UPA | 0 0 1 1 0 1 0 1 | |
| UserPartTest | User Part test | UPT | 0 0 1 1 0 1 0 0 | |
| User-to-UserInfo | User-to-user information | USR | 0 0 1 0 1 1 0 1 | |
| Reserved (used in 1984 version) | 0 0 0 0 1 0 1 0 | |||
| 0 0 0 0 1 0 1 1 | ||||
| 0 0 0 0 1 1 1 1 | ||||
| 0 0 1 0 0 0 1 0 | ||||
| 0 0 1 0 0 0 1 1 | ||||
| 0 0 1 0 0 1 0 1 | ||||
| 0 0 1 0 0 1 1 0 | ||||
| Reserved (used in 1988 version) | 0 0 0 1 1 1 0 1 | |||
| 0 0 0 1 1 1 0 0 | ||||
| 0 0 0 1 1 1 1 0 | ||||
| 0 0 1 0 0 1 1 1 | ||||
| Reserved (used in B-ISUP) | 0 0 1 1 1 0 0 1 | |||
| to | ||||
| 0 0 1 1 1 1 0 1 | ||||
| Reserved for future extension | 1 0 0 0 0 0 0 0 |
Abbreviations: