Telecommunication terminal operating at alternative data throughput rates

摘要

PCT No. PCT/FR92/01103 Sec. 371 Date Oct. 13, 1994 Sec. 102(e) Date Oct. 13, 1994 PCT Filed Nov. 26, 1992 PCT Pub. No. WO93/11628 PCT Pub. Date Jun. 10, 1993.A switchable data rate ISDN terminal for group G4 facsimile operation is disclosed. A decoder in the terminal automatically responds to a hexadecimal 7F formed by an extra bit added to the HDLC communications-starting flag when a 64 kb/s system transmits a 56 kb/s communication. The decoder responds by causing a speed controller in the terminal to reduce the effective data transfer rate.