Specifications

ISU AT Command Reference S-Register Definitions
Iridium Proprietary Version 2.45
20 June 2011 113
Register
Number
Range Default Description
Sr=n Command
Write Protected
in SAC0201
S22 0-255 246 Bitmap register where bits 0 and 1 reflect the speaker
volume setting, bits 2 and 3 reflect the speaker on/off
setting, and bits 4, 5 and 6 reflect the Xn setting.
Yes
S23 0-255 61
Bitmap register:
bit 0: autobaud setting
bits 1-3: DTE baud rate
bits 4-5: parity
bits 6-7: guard tone
Yes
S25 0-255 5 Sets length of time in hundredths of a second that a change
in the DTR status has to persist for before it is recognized.
S27 0-255 9 Bitmap register where bits 0, 1 and 3 reflect the &Qn setting,
bit 3 reflects leased line operation setting, bits 4 and 5 reflect
synchronous clock setting.
Yes
S30 0-255 0 Disconnect activity timer. Timer used to determine how long
the call connection been inactive, in increments of
1/10000ms. A value of 0 disables this function.
S31 0-255 0 Bitmap register where bit 1 reflects line modulation method
setting, bits 2 and 3 reflect the Wn setting.
Yes
S36 0-255 7 Bitmap register where bits 0, 1 and 2 reflect the link type
setting.
No action, compatibility only
Yes
S39 0-255 3 Bitmap register where bits 0, 1 and 2 reflect the &Kn setting.
Yes
S40 0-255 192 Bitmap register where bits 2, 3, and 4 reflect the \K setting,
and bits 6 and 7 reflect the \An setting, bits 3-5 reflects the
\Kn setting.
No action, compatibility only
Yes
S41 0-255 3 Bitmap registers where bits 2 and 6 enable retrain on bad
signal quality setting, bit 4 reflects xon/xoff usage setting,
and bit 5 reflects DTE auto rate adjustment setting.
No action, compatibility only
Yes
S95 0-255 0 Bitmap register for extended result codes (overrides Wn
setting).
0 = CONNECT shows DCE speed
2 = Enable CARRIER XXXX
3 = Enable PROTOCOL: XXXX
5 = Enable COMPRESSION: XXXX