User`s manual

U.S. Robotics I-modem Command Reference

Appendix A: Alphabetic Command Summary • Page A-43

3 8 Disable 64S-4D mapping.

S56 0 Bit-mapped register primarily used by U.S. Robotics Technical Support for

debugging purposes.

Bit Value Result

0 1 Disable non-linear coding.

1 2 Disable TX level deviation.

2 4 Disable preemphasis.

3 8 Disable precoding.

4 16 Disable shaping.

6 64 Disable V.34.

7 128 Disable V.FC.

S67 0 Bit-mapped register. (See Chapter 1, Using the A

T Command Set, for

instructions about how to set bit-mapped registers.)

Bit Value Result

0 1 Enable V

.110 fallback while originating or answering,

when the I-modem is set to autodetect (*V2=0).

1 2 Use a Þxed network rate.

Table AÐ1. S-register

s: Their Functions and Default Settings