Private Telecommunications Network (PTN) - Method for the specification of basic and supplementary services; English version ETS 300387:1994
Edition 1994-11

Private Telecommunication Network (PTN); signalling at the S-reference point; generic keypad protocol for the support of supplementary services; English version ETS 300190:1992
Edition 1993-09

Private Telecommunication Network (PTN) - Signalling protocol at the S-reference point - Circuit mode basic services; English version ETS 300192/A1:1996
Edition 1996-08

Private Telecommunication Network (PTN); signalling protocol at the S-reference point; identification supplementary services; English version ETS 300191:1992
Edition 1993-09

Private Integrated Services Network (PISN) - Inter-exchange signalling protocol - Cordless Terminal Location Registration (CTLR) supplementary service; English version ETS 300693:1996
Edition 1996-09

Private Integrated Services Network (PISN) - Inter-exchange signalling protocol - Cordless Terminal Incoming Call Additional Network Feature (ANF-CTMI); English version ETS 300696:1996
Edition 1996-09

Private Telecommunication Network (PTN); signalling at the S-reference point; generic feature key management protocol for the control of supplementary services; English version ETS 300240:1993
Edition 1993-12

Private Integrated Services Network (PISN) - Profile Standard for the connection of Radio Paging Equipment (RPE) to a PISN; English version ETS 300739:1996
Edition 1997-11

Private Telecommunication Network (PTN); signalling protocol at the S-reference point; circuit mode basic services; English version ETS 300192:1992
Edition 1993-09