Maxim Integrated 73M2901CE AT Command - Manual (Page 23)

UG_2901CE_027 73M2901CE AT Command User Guide
Rev. 2.0 23
4.4.9 S8 – Pause Time For Comma
(Default = 2)
The S8 register sets the number of seconds the modem will pause during a pause created by a ","
(comma) in the dialing sequence. Range is 1 - 254 (seconds).
4.4.10 S9 – Carrier Detect Response Time
(Default = 6)
The S9 register sets (in 10ths of a second) how long a carrier signal must exist before the modem issues
a carrier detect response. Range is 1 - 254 (1/10 seconds).
Note: Carrier detection while the modem is in the on-line state is governed by the times specified by S9
and S10. The CD light is the carrier detect indicator. If the carrier signal goes off, CD goes off within
20ms. If the carrier returns, CD turns on within 20ms after the carrier has been on continuously for the
time specified by S9. If CD is off for the time specified by S10, then carrier is lost and the modem hangs
up. If S10 is set to 255, the time is considered to be infinite, meaning that the modem will not hang up.
4.4.11 S10 – Lost Carrier To Hang Up Delay
(Default = 14)
The S10 register sets (in 10ths of a second) the delay time between loss of carrier and the modem
hanging up. After the S10 delay time, the modem hangs up and returns to Command State. Then you
will see the NO CARRIER response. If the register is set with a value of 255, the modem will ignore
carrier detect status and operate as if the carrier signal were present. If the value of S10 is less than the
value of S9 a momentary loss of carrier will cause the modem to hang-up. Range is 0 - 255 (1/10
seconds). See note on S9.
4.4.12 S11 – DTMF Dialing Speed
(Default = 70)
The S11 register sets the duration and spacing of touch-tones for tone dialing. (Setting this value lower
than 50 may produce inaccurate dialing.) This register does not affect pulse dialing. Range is 20 - 211
(milliseconds).