US Robotics 3CP3453 Quick Reference Card page 2

S-R
EGISTERS
Register Default Function
S0 0 Sets the number of rings before Auto Answer
S1 0 Counts and stores number of rings from calls
S2 43 Stores code for the escape code character
S3 13 Stores the code for the carriage return
S4 10 Stores the code for the line feed character
S5 8 Stores the code for the back space character
S6 2 Stores the wait time for dial tone
S7 60 Stores the wait time for carrier
S8 2 Sets the comma time in seconds
S9 6 Sets duration (1/10 of sec.) of remote
carrier signal before modem recognition
S10 14 Sets duration (1/10 of sec.) modem waits
after loss of carrier before hanging up
S11 70 Set touch tones spacing in 1/10 seconds.
S12 50 Sets the guard time for the escape code
S13 0 Bit-mapped register
Bit Value Result
0 1 Reset when DTR drops
1 2 Originate mode in Auto Answer
2 4 Disables pause before result codes
3 8 Auto Dial the number stored in NVRAM
position 0 on DTR
4 16 At power on, Auto Dial number
stored in NVRAM at position 0
5 32 Disable HST
6 64 Disable MNP Level 3
7 128 Hardware Reset
S14 1 Bit-mapped register
Bit Value Result
0 1 Disconnects on Escape code
S15 0 Bit-mapped register
Bit Value Result
0 1 Disables high frequency
equalisation
1 2 Disables online fallback
2 4 Disables 450 bps back channel
3 8 Sets non-ARQ buffer to 128 bytes
4 16 Disables MNP Level 4
5 32 Set backspace key to delete
6 64 Unusual MNP incompatibility
7 128 Custom applications only
S19 0 Sets the inactivity timeout, in minutes
S21 10 Length of break in ARQ mode, 1/100 seconds
S22 17 Stores the ASCII code for the XON character
S23 19 Stores the ASCII code for the XOFF character
S24 150 Sets DSR pulse time in 20-milliseconds
S25 5 Sets DTR recognition in 10-milliseconds
S26 1 Sets the RTS/CTS delay, 10-milliseconds
S27 0 Bit-mapped register
Bit Value Result
0 1 Enables V.21 modulation at 300 bps
1 2 Disables Trellis Code modulation
2 4 Disables V.32 modulation
3 8 Disables 2100 Hz answer tone
4 16 See Bit 4 and Bit 5 below
5 32 See Bit 4 and Bit 5 below
7 128 Unusual software compatibility
Bit4 Bit5 Result
0 0 Complete handshaking sequence
16 0 Disables MNP
0 32 Disables V.42 detection and LAPM
16 32 Disables detection phase
S28 8 Sets duration, in tenths of a second, of extra
3000/600 Hz answer tones
S29 20 Sets, in tenths of a sec, of the V.21answer tone
S34 0 Bit-mapped register
Bit Value Result
0 1 Disables V.32 bis
1 2 Disables enhanced V.32 Mode
2 4 Disables Quick V.32 Retrain
3 8 Enables V.23 modulations
4 16 Externals: Forces MR LED to show DSR
6 64 Disables remote access busy message
7 128 Disables V.32 terbo
S38 0 Sets duration, in seconds, before a forced hang up
S41 0 Sets number of attempts for remote access
S42 126 Stores the ASCII code for remote access escape
S43 200 Sets the guard time for the remote access
sequence, in 1/50th of a second
S44 15 Leased line delay timer
S51 0 Bit-mapped register
Bit Value Result
0 1 Disables MNP/V.42 in V.22
1 2 Disables MNP/V.42 in V.22bis
2 4 Disables MNP/V.42 in V.32
6 64 Disables selective reject
S53 0 Bit-mapped register
Bit Value Result
0 1 Enables dial security
1 2 Enables prompting
2 4 Enables local password protection
S54 64 Symbol bit-mapped register
Bit Value Result
0 1 Disable 2400 symbol rate
1 2 Disable 2743 symbol rate
2 4 Disable 2800 symbol rate
3 8 Disable 3000 symbol rate
4 16 Disable 3200 symbol rate
5 32 Disable 3429 symbol rate
6 64 Disable Call Indicate (CI)
7 128 Disable V.8
S55 0 Trellis code bit-mapped register
Bit Value Result
0 1 Disable 8S-2D trellis code
1 2 Disable 16S-4D trellis code
2 4 Disable 32S-2D trellis code
3 8 Disable 64S-4D trellis code
7 128 Enable phase roll detection
S56 0 Bit-mapped register
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
5 32 Disable V.34+
6 64 Disable V.34
7 128 Disable V.FC
S58 0 Bit-mapped register
Bit Value Result
0 1 Disables x2
5 32 Disables V.90
S69 0 Bit-mapped register
Bit Value Result
0 1 Disables plug/play signalling
1 2 Enables carrier loss redial
S70 0 Bit-mapped register
Bit Value Result
0 1 Enables recognition of Ring A
1 2 Enables recognition of Ring B
2 4 Enables recognition of Ring C
3 8 Enables recognition of Ring D
U.S. Robotics 56K Corporate
Modem
Quick Reference Card
Quick
Reference
Card
PN R24.0330.00
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