3.2 Packet mode connection-less data Connection-less Standard UDP/IP protocol using shared channels (statistical 9.6 kbit/s unprotected multiplexing) 4.8 kbit/s nominal protected 2.4, 1.2 kbit/s heavy protection Direct Internet connectivity (packet handler integrated in the FHMA network) 3.3 Circuit mode data services Circuit data Extended AT command set 9.6 kbit/s unprotected Character mode access to packet assembler/ disassembler (pad) 4.8 kbit/s nominal (X.28/X.29) protected 2.4, 1.2 kbit/s heavy protection Protected FAX Protected fax transmission using extended AT command set 4.8 to 14.4 kbit/s (3 slots) 3.4 Short message service Short messages units of 96 bytes with practically unlimited message length (random access is paired with subsequent allocations) Point-to-point and point-to-multipoint 3.5 High speed data Data and broadcast connections Protected 14.4 kbit/s Up to 3 TDMA Unprotected 28.8 kbit/s 3.6 Network application services FHMA provides the following network application services on the standard TCP/IP services: A and forward messaging service provides Special data messages (SDM) – – subscribers with additional message handling services such as: individual (IDM) and group (GDM) messages, registered, special delivery messages. These services are all accessed through special communications APIs; that enable Modem-like (Hayes compatible) communication services (PCCA/AT) – subscribers to use standard modem communication commands (AT/PCCA); Fleet management based on GPS (Etak application on PC) running from AVL – – subscriber unit (SU), PSTN or leased-line access. 3.7 Supplementary services CF Call forward unconditioned or conditioned (busy, no reply, not reachable) – CW Call waiting incoming call notification during connection – LE Late entry allow late comers to join a multipoint voice call – EC Emergency fleet group call
3.2 Packet mode connection-less data Connection-less Standard UDP/IP protocol using shared channels (statistical multiplexing) 9.6 kbit/s unprotected 4.8 kbit/s nominal protected 2.4, 1.2 kbit/s heavy protection Direct Internet connectivity (packet handler integrated in the FHMA network) 3.3 Circuit mode data services Circuit data Extended AT command set Character mode access to packet assembler/ disassembler (pad) (X.28/X.29) 9.6 kbit/s unprotected 4.8 kbit/s nominal protected 2.4, 1.2 kbit/s heavy protection Protected FAX Protected fax transmission using extended AT command set 4.8 to 14.4 kbit/s (3 slots) 3.4 Short message service Short messages units of 96 bytes with practically unlimited message length (random access is paired with subsequent allocations) Point-to-point and point-to-multipoint 3.5 High speed data Data Up to 3 TDMA and broadcast connections Protected 14.4 kbit/s Unprotected 28.8 kbit/s 3.6 Network application services FHMA provides the following network application services on the standard TCP/IP services: – Special data messages (SDM) – A and forward messaging service provides subscribers with additional message handling services such as: individual (IDM) and group (GDM) messages, registered, special delivery messages. These services are all accessed through special communications APIs; – Modem-like (Hayes compatible) communication services (PCCA/AT) that enable subscribers to use standard modem communication commands (AT/PCCA); – AVL – Fleet management based on GPS (Etak application on PC) running from subscriber unit (SU), PSTN or leased-line access. 3.7 Supplementary services CF Call forward – unconditioned or conditioned (busy, no reply, not reachable) CW Call waiting – incoming call notification during connection LE Late entry – allow late comers to join a multipoint voice call EC Emergency fleet group call
18-15-0052-00-0000-annex-5-to-working-party-5a-chairman-s-report.docx