US Robotics 005689-03 Manual page 54

Register Default
S29 20
S30 0
S31 128
S32 2
Function
Sets the duration, in tenths of a second, of the V.21 answer mode fallback timer.
Reserved
Reserved
Connection bit-mapped operations. Stores various modulation and call control flags
(default=0). To set the register, see the instructions for S13.
Bit Value Result
0 1 V.8 Call Indicate enabled
1 2 Enables V.8 mode
2 4 Reserved
3 8 Disable V.34 modulation
4 16 Disable 33.6 kbps support
5 32 Disable x2
6-7 32-128 Reserved
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