A SIMULTANEOUS VOICE PLUS DATA MODEM, OPERATING AT A VOICE PLUS DATA SIGNALLING RATE OF 4800 bit/s, WITH OPTIONAL AUTOMATIC SWITCHING TO DATA-ONLY SIGNALLING RATES OF UP TO 14 400 bit/s, FOR USE ON THE GENERAL SWITCHED TELEPHONE NETWORK AND ON LEASED POIN
This modem is intended for use on connections on General Switched Telephone Networks (GSTNs) and on point-to-point 2-wire leased telephone type circuits.