S Registers - NEC VERSA 2205C Manual

S Registers

The modem provides S registers to let you control many of
its parameters. Some of these S registers are Read-Only
(RO) registers. Some are bit mapped. For bit-mapped S
registers, each option controlled by the register is assigned a
bit. The state of the bit determines whether the option is en-
abled. The value of the S register is then set by adding the
values of all bits representing enabled options.
REGISTER
S0
S1
S2
S3
S4
S5
S6
S7
S8
S9
S10
S11
S12
C-8 Modem Commands, Registers, and Codes
S Register
DEFAULT DESCRIPTION
0 Auto-answer on number of rings.
0 Ring count.
43 Escape Character (+) (ASCII value
in decimal; disabled above 127)
13 Carriage Return character code
(ASCII value in decimal).
10 Line Feed character code (ASCII
value in decimal).
08 Backspace character code (ASCII
value in decimal).
02 Seconds to wait before dialing
without detecting dial tone.
40 Seconds to wait for carrier after
dial.
02 Seconds to pause for comma (,)
dial modifier.
06 Tenths of seconds for Carrier Detect
(CD) response time
14 Tenths of seconds to detect Carrier
loss time.
75 DTMF tone and pause duration.
40 Return to data mode timer.