| Register |
Default |
Function |
| S0 |
1 |
Sets the number of rings on which to answer in Auto
Answermode. When set to 0 (zero), Auto Answer is disabled. Auto
Answer is alsocontrolled by DIP Switch 5. |
| S1 |
0 |
Counts and stores the number of rings from an incomingcall.
Register S0 must be greater than 0. |
| S2 |
43 |
Stores the ASCII decimal code for the escape code
character.The default character is +. Any value between 128 and
255 will disablethe escape code. |
| S3 |
13 |
Stores the ASCII code for the Carriage Return character.Valid
range is 0 to 127. |
| S4 |
10 |
Stores the ASCII decimal code for the Line Feed character.Valid
range is 0 to 127 |
| S5 |
8 |
Stores the ASCII decimal code for the Backspace character.Any
value between 128 and 255 will disable the Backspace key's delete
function. |
| S6 |
2 |
Sets the number of seconds the modem will wait before
dialing.If Xn is set to X2 or X4, S6 determines the timeout
length whenno dial tone is detected. |
| S7 |
60 |
Sets the number of seconds the modem will wait for
a carrier.Often used to select a longer duration when the modem
is originating aninternational connection. |
| S8 |
2 |
Sets the duration (in seconds) for the Dial command
pauseoption (,). |
| S9 |
6 |
Determines the length of time (in tenths of a second)
theremote modem's carrier signal must continue in order to be recognized
bythe RMM. |
| S10 |
7 |
Sets the length of time (in tenths of a second) the
modemwill wait after loss of carrier before hanging up. Allows the
modem todistinguish between a line hit (or other momentary break)
from a true disconnect(hang up) by the remote modem.
Although it is not recommended to connect to a line with call waiting,the
S10 register can be adjusted upward to prevent the modem from misinterpretingthe
second call signal as a remote disconnect. If call waiting is a
problem,it is preferable to contact your phone company to determine
the commandto temporarily disable call waiting (typically *70W).
For example: ATDT*70W phone number.
Note: If S10 = 255, the modem will not hang up when the carrieris
lost. Dropping DTR hangs up the modem. |
| S11 |
70 |
Sets the duration and spacing (in milliseconds) for
tonedialing. |
| S12 |
50 |
Sets the duration (in fiftieths of a second) of the
guardtime for the escape code sequence (+++). |
| S13 |
0 |
Bit-mapped register. Select the bit(s) you want ON
andset S13 to the total of the values in the Value Column. For example,
ATS13=17enables bit 0 (value is 1) and bit 4 (value is 16). |
|
|
Bit |
Value |
Result |
|
|
0 |
1 |
Reset when DTR drops. |
|
|
1 |
2 |
Reset non-MNP transmit buffer from 1.5K to 128 bytes* |
|
|
2 |
4 |
Set Backspace key to delete. |
|
|
3 |
8 |
On DTR signal, autodial the number stored in NVRAM at position
0. |
|
|
4 |
16 |
At Power-On/Reset, autodial the number stored in NVRAM at position0. |
|
|
5 |
32 |
Reserved |
|
|
6 |
64 |
Reserved |
|
|
7 |
128 |
Disconnect on escape code. |
|
|
* The 1.5K-byte non-ARQ buffer allows data transfer
withXmodem and Ymodem type file transfer protocols without using
flow control.
The 128 Byte option allows remote users with slower modems to prevent
transmitteddata from scrolling off screen. When a remote user sends
an XOFF (Ctrl-S)to your computer and transmission stops, data in
transit from your modem'sbuffer does not exceed the size of the
remote user's screen. This is alsohelpful when a remote modem/printer
application is losing characters. |
| S14 |
0 |
Reserved |
| S15 |
0 |
Bit-mapped register setup. To set the register, see
instructionsfor S13. |
|
|
Bit |
Value |
Result |
|
|
0 |
1 |
Disable ARQ/MNP for V.22. |
|
|
1 |
2 |
Disable ARQ/MNP for .22 bis. |
|
|
2 |
4 |
Disable ARQ/MNP for V.32 / V.32bis / V.32terbo. |
|
|
3 |
8 |
Disable MNP handshake. |
|
|
4 |
16 |
Disable MNP level 4. |
|
|
5 |
32 |
Disable MNP level 3. |
|
|
6 |
64 |
MNP incompatibility. |
|
|
7 |
128 |
Disable V.42 operation. |
| S16 |
0 |
Bit-mapped register setup. To set the register, see
instructionsfor S13. |
|
|
Bit |
Value |
Result |
|
|
0 |
--- |
Reserved |
|
|
1 |
2 |
Touch tone dialing test. |
|
|
2 - 7 |
--- |
Reserved |
| S17 |
0 |
Reserved |
| S18 |
0 |
Test timer for &Tn loopback testing. Sets the
lengthof time (in seconds) the modem will wait before automatically
timing outand terminating the test. When set to 0, the timer is
disabled. Valid rangeis 1 - 255. |
| S19 |
0 |
Sets the duration (in minutes) for the Inactivity
Timer.The timer activates when there is no data activity on the
phone line. Attime out, the modem hangs up. S19 = 0 disables the
timer. |
| S20 |
0 |
Reserved |
| S21 |
10 |
Sets the length (in 10 millisecond units) of Breaks
sentfrom the modem to the computer. Applies to MNP or V.42 mode
only. |
| S22 |
17 |
Stores the ASCII decimal code for the XON character. |
| S23 |
19 |
Stores the ASCII decimal code for the XOFF character. |
| S24 |
0 |
Reserved |
| S25 |
5 |
Sets the duration (in hundredths of a second) that
DTRmust be dropped in order to be interpreted as a DTR loss. Allows
the modemto differentiate between a random glitch and a true DTR
loss.
In most cases, the default value can be used. The S25 register is
usefulfor setting compatibility with older systems running under
older operatingsoftware. |
| S26 |
0 |
Reserved |
| S27 |
0 |
Bit mapped register setup. To set the register, see
theinstructions for S13. |
|
|
Bit |
Value |
Result |
|
|
0 |
1 |
Enables ITU-T V.21 modulation at 300 bps for overseas calls; in
V.21mode, the modem answers both overseas and domestic (U.S. And
Canada) calls,but only originates V.21 calls (Default Bell 103). |
|
|
1 |
2 |
Enables un-encoded (non-trellis coded) modulation in V.32 mode. |
|
|
2 |
4 |
Disables V.32 modulation. |
|
|
3 |
8 |
Disables 2100 Hz answer tone to allow two V.42 modems to connect
morequickly. |
|
|
4 |
16 |
Enables V.23 fallback mode. |
|
|
5 |
32 |
Disables V.32bis mode. |
|
|
6 |
64 |
Reserved |
|
|
7 |
128 |
Software compatibility code. This setting disables the codes and
displaysthe 9600 code instead. The actual rate of the call can be
viewed on theATI6 screen. Used for unusual software incompatibilities.
Some softwaremay not accept 7200, 12000 and 14400 bps or greater
result codes. |
| S28 |
0 |
Eliminates the V.32 answer tones for a faster connection. |
|
8 |
Default item, all times are in tenths of a second. |
|
255 |
Disables all connections except V.32 at 9600 bps. |
| S29 |
20 |
Sets the duration (in tenths of a second) of the V.21
answermode. |
| S30 |
0 |
Reserved |
| S31 |
128 |
Reserved |
| S32 |
2 |
Bit-mapped register setup for 28.8 modems only. To
setthe register, see the instructions for S13. |
|
|
Bit |
Value |
Result |
|
|
0 |
1 |
Enable V.8 Call Indicate. |
|
|
1 |
2 |
Enable V.8 mode. |
|
|
3 |
8 |
Disable V.34 modulation. |
|
|
4 |
16 |
Disable 33.6 Kbps support. |
|
|
5 - 7 |
32 - 128 |
Reserved |
| S33 |
0 |
Bit-mapped register setup for 28.8 modems only. To
setthe register, see the instructions for S13. |
|
|
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 rate. |
|
|
6 |
64 |
Reserved |
|
|
7 |
128 |
Disable shaping. |
| S34 |
0 |
Bit-mapped register setup for 28.8 modems only. To
setregisters, see instructions for S13. |
|
|
Bit |
Value |
Result |
|
|
0 |
1 |
Disable 8S-2D trellis encoding. |
|
|
1 |
2 |
Disable 16S-4D trellis encoding. |
|
|
2 |
4 |
Disable 32S-2D trellis encoding. |
|
|
3 |
8 |
Disable 64S-4D trellis encoding. |
|
|
4 |
16 |
Disable nonlinear coding. |
|
|
5 |
32 |
Disable TX level deviation. |
|
|
6 |
64 |
Disable Pre-emphasis. |
|
|
7 |
128 |
Disable Pre-coding. |
| S35 - S37 |
--- |
Reserved |
| S38 |
0 |
Sets an optional delay (in seconds) before a forced
hang-upand clearing of the Transmit buffer when DTR drops during
an ARQ call.This allows time for a remote modem to acknowledge receipt
of all transmitteddata before it is disconnected.
When set at the default (0), the modem immediately hangs up when
DTR drops.
This option applies only to connections terminated by dropping DTR.
Ifthe modem receives the ATH command, it ignores S38 and immediately
hangsup. |
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