3Com PC Card User Manual page 53

S63 Data Rates Bit Map (V.25ter only). Default to 0. Nonstorable.
Bit 0. 16800
Bit 1. 19200
Bit 2. 21600
Bit 3. 24000
Bit 4. 26400
Bit 5. 28800
Bit 6. 31200
Bit 7. 33600
S65 Data Rates Bit Map (V.25ter only). Default to 0. Nonstorable.
Bit 0. 600 and below
Bit 1. 1200
Bit 2. 2400
Bit 3. 4800
Bit 4. 7200
Bit 5. 9600
Bit 6. 12000
Bit 7. 14400
S66 Data Rates Bit Map (V.25ter only). Default to 0. Nonstorable.
Bit 0. 16800
Bit 1. 19200
Bit 2. 21600
Bit 3. 24000
Bit 4. 26400
Bit 5. 28800
Bit 6. 31200
Bit 7. 33600
S70 V.25ter Reporting Messages. Default to 0. Nonstorable.
Bit 0. Enable modulation reporting
Bit 1. Enable error correction reporting
Bit 2. Enable data compression reporting
Bit 3. Enable local rate reporting
Bits 7-4. Not used
S Registers 49