Specifications

ISU AT Command Reference S-Register Definitions
Iridium Proprietary Version 2.45
20 June 2011 112
12.2 Standard S-Registers
Table 10-1: Standard S-Registers
Register
Number
Range Default Description
Sr=n Command
Write Protected
in SAC0201
S0
0-255 0 Autoanswer. Assigning a value from 1 to 255 in register S0
tells the ISU to automatically answer incoming calls. The
factory setting of 0 turns off the automatic answer feature.
Register S15 controls the type of call to be automatically
answered.
S1
0-255 0 Ring count Yes
S2
0-255 43 Escape code character
S3
0-127 13 Carriage return character
S4
0-127 10 Line feed character
S5
0-32 8 Backspace character
S6
0-255 4 Wait for dial-tone.
No action, compatibility only
S7
0-255 50 Communication standard used by ISU
No action, compatibility only
S8 0-255 4 Pause time for comma.
No action, compatibility only
S9 0-255 6 Carrier detect response time.
No action, compatibility only
S10 0-255 14 Carrier loss time.
No action, compatibility only
S11 0-255 0 DTMF tone duration.
No action, compatibility only
Yes
S12 0-255 40 Escape guard time. Time, in 50ths of a second, until OK
displayed after entering command mode by escape sequence.
S14 0-255 170 Bitmap register where bit 1 reflects the En setting, bit 2 turns
off command responses, bit 3 reflects the Vn setting, bit 5
reflects pulse/tone dial mode
S21 0-255 48 Bitmap register where bit 0 reflects telephone jack control,
bit 2 reflects RTS/CTS on/off, bits 3 and 4 reflect the &Dn
setting,bit 5 reflects the &Cn setting, bit 6 reflects DSR
on/off, and bit 7 reflects disconnecting long space.
Yes