ISUP CPC PPL Event Indications (ANSI)

Event ID | Event
--- | ---
0x01 | Continuity indication in IAM. (NOTE: The host will also receive a DS0 status change as the channel is automatically brought OOS to perform the continuity test.)
0x02 | COT success
0x03 | COT failure
0x04 | T8 expiration
0x05 | REL received while waiting for Continuity Check
0x06 | Alert Maintenance=No RLC received before T5 expiration
0x07 | Continuity Check Outgoing Success
0x08 | Continuity Check Outgoing Failure
0x0A | Only network-initiated SUS accepted
0x0B | Invalid PAM request received from host
0x0C | TCRA expiry
0x0D | TCRM expiry
0x0E | CRA received
0x10 | Only network-initiated RES accepted.
0x17 | Discarded message with unrecognized parameters.
0x20 | FAR received
0x21 | FAA received
0x24 | FAC received
0x25 | PAM received
0x2A | INR received
0x2B | INF received
0x2F | SUS received
0x30 | RES received
0x37 | EXM received
0x38 | FOT received
0x4E | Discarded parameter (Raw SS7 Data Parameters ICB 0x22 included in this event indication)
0x4F | CCR received
0x50 | LPA received
0x55 | Loop Prevention (LOP).
0x99 | T9 expiration
0x9A | T7 expiration

Out of Service
See Signaling System Number Seven.
See Information Control Block.
In PPL, a condition that, when met, drives a state machine (PPL Component) from one state to another, by invoking an associated Primitive. In PPL files, an Event is marked by an arrow and text.
Continuity Check Request message (ISUP)