| Заглавие на английском языке | Digital cellular telecommunications system (Phase 2+) - GSM Cordless Telephony System (CTS), Phase 1 - CTS supervising system layer 3 specification (GSM 04.57 version 7.0.3 Release 1998) (Endorsement of the English version EN 302407 V 7.0.3 (2000-08) as German standard) |