ECMA-141

Private Telecommunication Networks (PTN) - Inter-exchange signalling - Data link layer protocol (PTN QSIG-L2)

2nd edition, June 1993

This Standard specifies a symmetrical application for inter-PTNX use of the Data Link Layer Protocol specified in ETS 300 125. It can be applicable to certain scenarios which provide a continuous bit stream channel for signaling purposes between two PTNXs, and will be referenced from the standards that specify the scenarios concerned.