User`s guide

60 56K Message Modem
Register Default Function
S13 0 Bit-mapped register. Select the bit(s) you want on and set
S13 to the total of the values in theValue 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, auto dial the number
stored in NVRAM at position 0.
4 16 At power on/reset, Auto Dial the
number stored in NVRAM at
position 0.
5 32 Reserved
6 64 Disable quick retrains.
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 lets remote users with slower modems keep
data you’re sending from scrolling off their screens. When
remote users send your computer an XOFF (Ctrl-S) and you
stop transmitting, the data in transit from your modem’s buffer
doesn’t exceed the size of their screen. This is also very helpful
in situations when a remote modem/printer application is losing
characters.