B-16 Appendix B Date Code 20010518
SEL-2020 Instruction Manual
Table B.4: S Register Information - Part # XE1414A - (continued)
Register Parameter (default) Function
S6 2-255 seconds (2) Dial tone wait. Number of seconds the modem will
wait for dial tone before dialing. If no dial tone
detected during this time, it responds "NO DIAL
TONE".
S7 1-60 seconds (60) Carrier signal wait. Number of seconds modem will
wait for carrier signal after dialing or answering. If
no carrier detected during this time, it responds with
"NO CARRIER".
S8 0-255 seconds (2) Pause time for comma. Number of seconds modem
will pause for each comma placed in a dial command
string.
S9 1-255/0.1 seconds (6) Carrier detect response time. Number of seconds the
responding carrier signal must be present for the
modem to recognize it. Default means listen for 0.6
seconds. Increasing the time reduces the chance the
modem will mistake noise, such as a voice or a busy
signal, as a carrier signal.
S10 1-255/0.1 seconds (14) Carrier loss time. Length of time a signal from
remote modem may be lost before modem hangs up.
S11 50-255 milliseconds (90) DTMF tone. Sets duration and spacing of tones
when using touch tone dialing. Higher setting means
slower dialing rate.
S12 20-255/0.02 seconds (50) Escape code guard time. Length of quiet time
required before and after you enter Escape command.
Set the guard time large enough so the escape can be
recognized, given the rate at which you are
transmitting. S12=0 allows recognition of any
successive +++ with no guard time.
S18 1-255 seconds (0) Test timer. Sets duration of a modem diagnostic test
before it automatically cancels.
S30 0-255/0.01 second (0) Duration of inactivity on TXD and RXD before
automatic disconnect.
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