(HSCSD) A planned feature of GSM Phase 2 defining a standard for circuit switched data transmission over a GSM link at up to 57.6 (78.8?) kbps. This is achieved by concatenating up to four consecutive GSM timeslots, each of which is capable of 14.4 kbit/s. It uses multiplexing and compression or filtering.
The following services toward the fixed network are supported: V.34 up to 28.8 kbps and V.110 with rate adaptation up to 38.4 kbps.
HSCSD is aimed at mobile workstation users. As it is circuit switched, it is suited to streaming applications such as video conferencing and multimedia. Bursty applications like electronic mail, are more suited to packet switched data (as in GPRS).
- High speed connect
hardware (HSC) A Hewlett-Packard bus like EISA. [HP9000 Configuration Guide, January 1996]. [Details?] (1996-06-06)
- High-speed downlink packet access
noun 1. a technology that allows high-speed downloads to mobile telephones HSDPA Also 3.5G
- High-speed net connect
hardware, communications (HNC) A network interface unit for BS2000 mainframes based on Novell NetWare, supporting Ethernet and FDDI. (2005-02-11)
- High speed serial interface
hardware, communications (HSSI) A serial port which supports serial transmit speeds of up to 52 megabits per second. It is typically used for leased lines such as DS3 (44.736 Mbps) and E3 (34 Mbps) and for Wide Area Network devices such as routers. (1995-11-20)