Western Telematic Data/FaxModem User Manual
Page 19
Register
Default
Function
S10
(continued)
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 misinterpreting
the second call signal as a remote disconnect. If call
waiting is a problem, it is preferable to contact your
phone company to determine the command to
temporarily disable call waiting (typically *70W).
For example: ATDT *70W phone number.
Note: If S10 = 255, the modem will not hang up
when the carrier is lost. Dropping DTR hangs up the
modem.
S11
70
Sets the duration and spacing (in milliseconds) for
tone dialing.
S12
50
Sets the duration (in fiftieths of a second) of the guard
time for the escape code sequence (+++).
S13
0
Bit-mapped register. Select the bit(s) you want on
and set S13 to the total of the values in the Value
Column. For example, ATS13=17 enables 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
position 0.
5
32
Reserved
6
64
Reserved
7
128
Disconnect on escape code.
* The 1.5K-byte non-ARQ buffer allows data transfer with Xmodem and Ymodem
type file transfer protocols without using flow control.
The 128 Byte option allows remote users with slower modems to prevent
transmitted data 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's
buffer does not exceed the size of the remote user's screen. This is also helpful
when a remote modem/printer application is losing characters.
Page 17
S-Registers