Access and Terminals (AT) - Ordinary quality voice bandwidth 4-wire analogue leased line (A4O) - Connection characteristics and network interface presentation (Endorsement of the English version EN 300451 V 1.2.1 (2001-07) as German Standard).
€16.45
Access and Terminals (AT) - Special quality voice bandwidth 4-wire analogue leased line (A4S) - Connection characteristics and network interface presentation (Endorsement of the English version EN 300452 V 1.2.1 (2001-07) as German Standard).
Access and Terminals (AT) - Ordinary and special quality voice bandwidth 4-wire analogue leased lines (A4O and A4S) - Terminal equipment interface (Endorsement of the English version EN 300453 V 1.2.1 (2001-07) as German Standard).
Access and Terminals (AT) - 34 MBit/s and 140 Mbit/s digital leased lines (D34U, D34S, D140U and D140S) - Network interface presentation (Endorsement of the English version EN 300686 V 1.2.1 (2001-07) as German Standard).
Access and Terminals (AT) - 34 MBit/s digital leased lines (D34U and D34S) - Connection characteristics (Endorsement of the English version EN 300687 V 1.2.1 (2001-07) as German Standard).
Access and Terminals (AT) - 34 Mbit/s digital leased lines (D34U and D34S) - Terminal equipment interface (Endorsement of the English version EN 300689 V 1.2.1 (2001-07) as German Standard).
Access and Terminals (AT) - 140 Mbit/s digital leased lines (D140U and D140S) - Terminal equipment interface; (Endorsement of the English version EN 300690 V 1.2.1 (2001-07) as German Standard).
Access and Terminals (AT) - Multiple 64 kbit/s digital unrestricted leased lines with octet integrity presented at a structured 2048 kbit/s interface at either or both ends (D64M) - Connection characteristics and network interface presentation (Endorsement of the English version EN 300766 V 1.2.1 (2001-07) as German Standard).
Access and Terminals (AT) - 140 MBit/s digital leased lines (D140U and D140S) - Connection characteristics (Endorsement of the English version EN 300688 V 1.2.1 (2001-07) as German Standard).
Human Factors (HF) - Human factors requirements for a European Telephony Numbering Space (ETNS) (Endorsement of the English version EN 301104 V 1.1.1 (1998-10) as German standard)
Private Integrated Services Network (PISN) - Inter-exchange signalling protocol, Circuit mode basic services, Data Link Layer (DLL) - Part 2: Abstract Test Suite (ATS) specification; English version ETS 300804-2:1998
€77.20
Private Integrated Services Network (PISN) - Inter-exchange signalling protocol, Generic functional protocol for the support of supplementary services - Part 1: Test Suite Structure and Test Purposes (TSS&TP); English version ETS 300806-1:1998
€173.74
Private Integrated Services Network (PISN) - Inter-exchange signalling protocol, Generic functional protocol for the support of supplementary services - Part 2: Abstract Test Suite (ATS) specification; English version ETS 300806-2:1998
€91.03
Public Switched Telephone Network (PSTN) - Category II specification for 300 bit/s duplex modems standardized for use on the PSTN (Endorsement of the English version ETS 300115:1997 as German standard)
Functional requirements for the interface between data terminal equipment and data circuit-terminating equipment - Part 1: General application
