MTP3 TSFC PPL Event Indications

Event ID | Event
--- | ---
0x0001 | Destination inaccessible.Although TSFC is a per-stack state machine, this event utilizes a stack/destination AIB to identify the concerned signaling point. A single ICB of type Q.752 Parameters is included with the following parameters: 0x0000 Timestamp 0x0001 Interval sequence number
0x0002 | Destination accessible. TSFC is a per-stack state machine, this event utilizes a stack/destination AIB to identify the concerned signaling point. A single ICB of type Q.752 Parameters is included with the following parameters: 0x0000 Timestamp 0x0001 Interval sequence number
0x0015 | PAUSE IND Parameter ID - 0x0427
0x0016 | RESUME IND Parameter ID - 0x0427
0x0017 | STATUS IND Parameter ID - 0x0427

PPL Parameters

ICB Type | 0x03 (Extended Data)
ICB ID | 0x0427
Data Length 2 bytes | 0x0006
Data[0-3] | Affected DPC
Data[4] | Cause Value Value 0 - congestion level 0 Value 1 - congestion level 1 Value 2 - congestion level 2 Value 3 - congestion level 3 Value 4 - User Part Unavailable Value 5 - User Part Unequipped Value 6 - User Part Inaccessible Value 7 - Signaling Link Congestion level 0 Value 8 - Signaling Link Congestion level 1 Value 9: Signaling Link Congestion level 2 Value 10: Signaling Link Congestion level 3 Value 11: Signaling Link Congestion level 4
Data[5] | User Information Octet value

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.
See Address Information Block.
See Information Control Block.
See Programmable Protocol Language.
Destination Point Code