
Si2400
Rev. 1.3 35
answer (e.g. 500 = 01) or Bellcore CID will function
normally.
Basic Command
ATDT<phone number>!7<tone pulse digits 0-9, B-
F><CR>
Result codes after dialing
t Dial tone detected
, Phone number dialed—start of initial
intermessage time
r Ringback tone detected
b Busy tone detected
c Handshake Tone detected in S39 (CDT)
time window and present for S38[4:2]
(HMT) msec
N Handshake Tone not detected per above
Result codes after “c” received
, Message sent—start of intermessage time
K Kissoff Tone detected in S36[3:2] (IDKT)
time window and present for S38[4:2] (HMT)
msec
^ Kissoff Tone not detected per above
N Intermessage timeout defined in S36[3:2]
(IDKT) elapsed. A second message received
after the “,” is sent at this time.
Table 19. !7 Parameters
S-Register Bits Name Function
S1F Alarm 3 Reconfigured from ATTD in !7 mode.
7:5 KOT Kissoff timeout.
4:0 IMT Intermessage timing.
S2B 7:0 DTL Reconfigured from DTL in !7 mode to pulse on time (5/3 ms units).
S2C 7:0 DTTO Reconfigured from DTTO in !7 mode to pulse off time (5/3 ms units).
S2D 7:0 SDL Reconfigured from SDL in !7 mode to pulse interdigit time (5/3 ms units).
S2E 7:0 RTCT Reconfigured from RTLT in !7 mode to handshake end to data TX delay
(10 ms units).
S36 Alarm 1 Reconfigured from SKDTL in !7 mode.
7:6 POF Pulse off time.
5:4 PON Pulse on time.
3:2 IDKT Intermessage delay and Kissoff timeout.
1:0 IT Interdigit timing.
S38 Alarm 2 Only used in !7 mode.
7 DBD Delay before data.
6:5 DCF Data carrier frequency.
4:2 HMT Handshake minimum tone.
1:0 HF Handshake frequency.
S39 7:0 CDT Reconfigured from CDT in !7 mode to handshake tone timeout.
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