AT Commands and S-Registers
B-23
Issue 1 April 1994
Table B-1. AT Command and S-Register List (22 of 34)
AT
Command/
S-Register
Description
&F
n
Select Factory Default and Enhanced Throughput
Cellular
(ETC
) Configuration Options
&F0
Loads factory configuration options into
Active memory.
&F5
Loads the ETC protocol. Use this setting
when the DataPort 2001 is attached
directly to a cellular telephone. An RJ11
adapter (which can be purchased from
your cellular telephone supplier) is required
for this configuration.
&F6
Loads the ETC protocol. Use this setting
when the DataPort 2001 is connected
directly to a normal telephone line, but
communicates with a remote modem that
is attached to a cellular telephone.
&G
n
V.22 bis and V.22 Guard Tone
Determines the nature of the V.22 Guard Tone.
&G0
Disable
&G1
550 Hz
&G2
1800 Hz
&
I
n
Transmit Level
Determines transmit level for data over dial lines.
Values can range from –10 dBm to –25 dBm.
There is no default setting for &
I
; the factory
setting for Transmit Level is Permissive mode
(&J).
Cellular setting (&F6) is –18 dBm.