Product manual
XStream‐PKG‐T™TelephoneRFModem–ProductManualv5.x00[2006.02.24]
Table3‐05. TelephoneModuleATCommands–S‐Parameters
AT
Command
Description Parameter Range Default
S-Parameters
S0
Number of Rings before Auto-Answer. The number of rings
before module will automatically answer.
0 - 255 0 (no Auto-Answer)
S1
Ring Counter. Counts Number of Rings, clears count after 8
seconds of no ring.
0 - 255 n/a
S2
Command Sequence Char. Holds ASCII value of escape
character.
0 - 255 43 (“+” char)
S3
Carriage Return Char. Holds ASCII value of carriage return
character.
0 - 127 13 (carriage return)
S4 Line Feed Char. Holds ASCII value of line feed character.
0 – 127
[ASCII decimal]
10 (line feed)
S5 Backspace Char. Holds ASCII value of backspace character.
0 – 32
[ASCII decimal]
8 (backspace)
S6
Wait Time/Dial Tone. The length of time module will wait for dial
tone when encountering a “W” dial modifier before returning “NO
DIAL TONE” message.
2 - 255
[x 1 second]
2
S7
Wait Time/Carrier. The length of time module will wait:
- for carrier before hanging up
- for silence when encountering the “@” dial
modifier before continuing with the next dial string parameter
- for dial tone when encountering a “W” dial
modifier before continuing with the next dial string parameter.
1 - 255
[x 1 second]
50
S8
Pause Time. Sets time that module must pause when the “,”
character is encountered in the dial string.
2 - 255
[x 1 second]
2
S9 Carrier Detect Time. No value can be written.
Not configurable
[x 1 ms)
600
S10
Carrier Loss Time. Time that module waits before hanging up
after losing carrier. The actual wait time is (S10 - S9), so “S10”
must be set to a value greater than “S9”.
6 - 255
[x 100 ms]
14
S11 Dial Tone Duration. Sets tone duration for DTMF dialing.
50 - 255
[x 1 ms]
95
S12
Guard Times. Required maximum time period of silence
between receipt of the last character of the three escape
character sequence and sending of the “OK” result code. If any
characters are detected during this time, “OK” will not be sent.
0 - 255
[x 20 ms]
50 (1 second)
S26
/ Delay Time. The time delay before the module turns
on
after detecting OFF to ON transition (when “&R0”
command is set).
0 - 255
[x 10 ms]
1
S29
On-hook Time. Sets length of time that the module will go on-
hook when it encounters Flash (“!”) dial modifier in dial string.
Not configurable
[x 10 ms]
70
(country-dependent,
not configurable)
S30
Disconnect Inactivity Timer. The length of time that the module
will stay online before disconnecting when no data is sent or
received.
0 - 255
[x 10 seconds]
0 (disabled)
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