Attachments to the Public Switched Telephone Network (PSTN); category II attachment for 1200 bits per second half duplex and 1200/75 bits per second asymmetrical duplex modems standardized for use on the PSTN; english version ETS 300118:1991
€77.20
Private Telecommunication Network (PTN); signalling at the S-reference point; data link layer protocol; English version I-ETS 300169:1992
Private Telecommunication Network (PTN); specification, functional models and information flows; control aspects of circuit mode basic services; English version ETS 300171:1992
€98.32
Private Telecommunication Network (PTN); specification, functional models and information flows; identification supplementary services; English version ETS 300173:1992
Private Telecommunication Network (PTN); addressing; English version ETS 300189:1992
Transmission and multiplexing (TM); optical interfaces for equipments and systems relating to the synchronous digital hierarchy [ITU-T Recommendation G.957 (1993) modified]; English version ETS 300232:1993
€41.78
Private Telecommunication Network (PTN); specification, functional models and information flows; name identification supplementary services; English version ETS 300237:1993
Private Telecommunication Network (PTN); inter-exchange signalling protocol; name identification supplementary services; English version ETS 300238:1993
Distributionboxes for telecommunication systems; dimensions, types
€34.30
Business telecommunications (BT); Open Network Provision (ONP) technical requirements; 2048 kbit/s digital unstructured leased line (D2048U); connection characteristics; English version ETS 300247:1993
Business telecommunications (BT); Open Network Provision (ONP) technical requirements; 2048 kbit/s digital unstructured leased line (D2048U); terminal equipment interface; English version ETS 300248:1993
Private Telecommunication Network (PTN); specification, functional models and information flows; diversion supplementary services; English version ETS 300256:1993
Private Telecommunication Network (PTN); inter-exchange signalling protocol; diversion supplementary services; English version ETS 300257:1993
Private Telecommunication Network (PTN); specification, functional models and information flows; path replacement additional network feature; English version ETS 300258:1993
Private Telecommunication Network (PTN); inter-exchange signalling protocol; path replacement additional network feature; English version ETS 300259:1993
