MTP - SIGNALLING LINK

SIGNALLING LINK: Reliable transfer of signalling messages (signal(ling) units - SU)-s between two directly connected signalling points. Basic SU formats: FISU, LSSU, MSU

Functions:


   -----------+        MSU        +------RC-------+ SU  +----DAEDR----+  +--------------
              |<------------------|               |<----|    DAEDT    |  |
              |   +---LSC----+LSSU| Reception     |     |    AERM     |  |
              |   |   IAC    |<---|  part         |     |    SUERM    |  |
              |   |   POC    |-CI-| Impl.         |--I--|             |  |
              |   |          |    +---------------+     |             |  |
              |   |          |      +----CC----+        | Error       |  | Signalling
    Signalling|   |Link state|      |Congestion|        | detection   |  | data
    network   |   |control   |      |  control |        | delimitation|  | link
    functions |   |part      |      |  part    |        | and         |  | (Level1)
    (Level3)  |   |Impl.     |      +----------+        | alignment   |  |
              |   |          |    +------TC-------+     |             |  |
              |   |          |-CI-|               |<----| Impl.
              |   +----------+    | Transmission  |     |             |  |
              |-------------------|  part         |     |             |  |
              |--------MSU------->|               |-SU->|             |  |
    ----------+                   +---------------+     +-------------+  +-------------

      C - Control
      I - Indication

Automaták: