DIN ETS 300102-2:1992-02

Foreword
1 Scope
2 Normative references
3 Explanation of symbols
4 User side and network side call states
5 Network side SDLs - Overview
   5.1 Network side call stetes
   5.2 Network side SDLs - Block diagram
   5.3 Network side SDLs - List of primitives
   5.4 Network side SDLs - Representation method
6 User side SDLs - Overview
   6.1 User side call stetes
   6.2 User side SDLs - Block diagram
   6.3 User side SDLs - List of primitives
7 Graphical SDL diagrams
   7.1 Network side SDL diagrams
   7.2 User side SDL diagrams

Gives, using SDL representation, the circuit-switched call control procedures of the Digital Subscriber Signalling one (DSS1) as specified in clause 5 of ETS 300 102-1. In Order to describe the point-to-multipoint Operation of the protocol, the concept of a "global" process running in parallel with a number of "individual" (dynamic) processes in the network side has been introduced. This approach, and the associated definition of internal primitives is intended to provide a coherent description of the protocol and does not constrain implementations. The text description in clause 5 of ETS 300 102-1 is definitive.