Multi-Tech Systems MTS2SA-T User Manual
Page 119
Chapter 10
− Modem Mode AT Commands, S-Registers, and Result Codes
Multi-Tech Systems, Inc. MultiConnect Serial-to-Serial Adapter User Guide (S000354A)
119
Register Unit Range Default Description
S6
seconds
2–255
2 Wait Time Before Blind Dialing or for Dial Tone.
1. Sets the length of time, in seconds, that the modem will wait before
starting to dial after going off-hook when blind dialing. This operation,
however, may be affected by some ATX options according to country
restrictions. The “Wait for Dial Tone” call progress feature (W dial
modifier in the dial string) will override the value in register S6. (When
configured for US).
2. Sets the length of time, in seconds, that the modem will wait for dial
tone when encountering a “W” dial modifier before returning NO DIAL
TONE result code. (W class). Default is country-dependent. The
modem always pauses for a minimum of 2 seconds, even if the value
of S6 is less than 2 seconds.*
S7
seconds
1–255*
50 Wait Time for Carrier, Silence, or Dial Tone.
1. Sets the length of time, in seconds, that the modem will wait for
carrier before hanging up. The timer is started when the modem
finishes dialing (originate), or 2 seconds after going off-hook (answer).
In originate mode, the timer is reset upon detection of answer tone if
allowed by country restrictions.
2. Sets the length of time, in seconds, that modem will wait for silence
when encountering the @ dial modifier before continuing with the next
dial string parameter.
3. Sets the length of time, in seconds, that the modem will wait for dial
tone when encountering a “W” dial modifier before continuing with the
next dial string parameter. (US model.)
The default is country dependent. *
S8
seconds
2–255
2 Pause Time for Dial Delay. Sets the time, in seconds, that the
modem must pause when the “,” dial modifier is encountered in the
dial string. *
S9
0.1
s
1–255
6 Carrier Detect Response Time. Supported for backward
compatibility only. No value can be written. Responds with default
value. *
S10
0.1
s 1–255 14 Lost Carrier to Hang Up Delay. Sets the length of time, in tenths of
a second, that the modem waits before hanging up after a loss of
carrier. This allows for a temporary carrier loss without causing the
local modem to disconnect. When register S10 is set to 255, the
modem functions as if a carrier is always present. *
The actual interval the modem waits before disconnecting is the value
in register S10 minus the value in register S9. Therefore, the S10
value must be greater than the S9 value or else the modem
disconnects before it recognizes the carrier.
Note:
For Call Waiting detection, if the modem is set to US country
code and S10 >=16, then the modem will detect the Call Waiting tone
and hang-up the line. If S10 <16, the modem will not detect Call
Waiting tone.
S11
0.001
s
50–255
95 DTMF Tone Duration. 1. For US models, S11 sets the duration of
tones in DTMF dialing (has no effect on pulse dialing).
2. For other countries, S11 is a country parameter. The default is
country dependent. *
S12
0.02 s
0–255
50
Escape Prompt Delay (EPD).
Defines the maximum period, in
fiftieths of a second, allowed between receipt of the last character of
the three escape character sequence from the DTE and sending of
the OK result code to the DTE. If any characters are detected during
this time, the OK will not be sent. Sending of the OK result code does
not affect entry into command mode. *