Service provided by the B-channel of ISDN, including digital telephony, circuit-switched data at 64 kbit/s, packet-switched data (X.25), etc.
A network technology or vendor that provides wireless transmission. Examples of bearer service technologies include Mobitex, cellular digital packet data (CDPD), Global System for Mobile Communications (GSM) and general packet radio service (GPRS). The vendors are too numerous to mention, but consist of the world's prominent vendors of GSM, time division multiple access (TDMA), code division multiple access (CDMA), packet radio and paging. See CDPD, GSM, GPRS, TDMA and CDMA.