4[1]GSM03.39 (Version6.0.0):European digital cellular telecommunications system (Phase2+);Interface protocols for the connection of Short Message Service Centres (SMSCs) to Short Message Entities (SMEs) [S].
5[2]GSM03.40 (Version6.0.0):European digital cellular telecommunications system (Phase2);Technical realization of the Short Message Service Point to Point [S].
6[3]Short Message Pereto Pete Protocol Specifi-cationv3.4 (document version:-12-oct-1999 issue1.2) [S].
7[4]Digital cellular telecommunications system (Phase 2+);Use of Data Terminal Equipment-Data Circuit terminating;Equipment (DTE-DCE) Interface for Short Message Service(SMS) and Cell Broadcast Service(CBS)(GSM 07.05 version 7.0.1 Release 1998)[S]
