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24 536EX Chipset Developer’s Manual
Intel Confidential
AT Command Summary Tables
f 66 Data answer detected (2225 Hz)
R 52 Incoming ring
% ‘ (,) 25, 26, 27, 28, 29 Manufacturer-specified
Table 12. Dial Modifiers
Command Function
0 to 9 Dialing digits
A, B, C, D, *, # Tone dial characters
P Pulse dial
R Reverse Originate mode
S=n Dial NVRAM telephone number
T Tone dial
W Wait for dial tone
, Pause
! Flash hook
@ Wait for quiet answer
; Return to command state
- ( ) Ignored by modem
Table 13. S-Register Summary
Note Register Function Default Range Units Reported by &Vn
* S0 No. of rings to auto-answer on 0 0–255 ring yes
S1 Ring count 0 0–255 ring yes
* S2 Escape character 43 0–127 ASCII yes
S3 Carriage return character 13 0–127 ASCII yes
S4 Line feed character 10 0–127 ASCII yes
S5 Backspace character 8 0–32, 127 ASCII yes
* S6 Wait before dialing 2 2–255 second yes
* S7 Wait for carrier 60 1–255 second yes
* S8 Pause time for dial modifier 2 0–255 second yes
* S9 Carrier recovery time 6 1–255 0.1 second yes
* S10 Lost carrier hang up delay 14 1–255 0.1 second yes
* S11 DTMF dialing speed 70 50–255 ms yes
* S12 Guard Time 50 0–255 (0.02 second) yes
* S14 Bit-mapped options 138 –– no
* Value saved in NVRAM.
Table 11. Voice DTE←DCE Character Pairs (Continued)
Response Hex Code Function