Table 4-1. AT Command and S-Register Reference (14 of 27)
AT
Command
Description
or
S-Register
&Y n
Load Configuration Options on Power-Up
This command determines which set of configuration
options are loaded into Active memory when a modem
power-up occurs.
&Y0 Loads configuration options from User 0.
&Y1
&Z n = x
Store Telephone Numbers
Stores telephone number n into directory x
(1 and 2).
\A n
Maximum Frame Size
This command determines the maximum frame (or
block) size used for V.42 or MNP 4–2 error control
operation. For example, if the telephone connection is
poor, this allows you to adjust the data's block size and
possibly improve the modem's performance. Note that
for V.42 operation, the modem has a maximum size of
128 characters.
\A0
\A1
\A2
\A3
\A4
\A5
Loads configuration options from User 1.
64 characters per frame
128 characters per frame
192 characters per frame
256 characters per frame
32 characters per frame
16 characters per frame
Issue 3 April 1994
4-15