Make/Break Dial Pulse Ratio (&P); Synchronous Transmit Clock Source (&X); Dce Speed (%B) - Black Box 325 User Manual

6.11.13 M /B
AKE REAK
Using AT&P, the dial pulse is on for 39% and off for 61% of one cycle. Using AT&P1, the dial pulse is on
for 33% and off for 67% of one cycle.
Command
&P
&P1
†default
6.11.14 S
YNCHRONOUS
The AT&X commands select internal, external, or receive clock as the transmit clock source.
Command
&X
&X1
&X2
†default
6.11.15 DCE S (%B)
PEED
AT%B sets the originating DCE speed to follow the DTE speed. Two modems will not connect at a speed
faster than the lower DCE speed setting of the two modems. To allow the modem to transmit data at a
speed different from DTE speed, enter AT%Bn (n=1 to 6).
D P R (&P)
IAL ULSE ATIO
Table 6-26. Make/Break Dial Pulse Ratio (&P).
Operation
39%: 60% (US and Canada)†
33%: 67%
T C S
RANSMIT LOCK OURCE
Table 6-27. Synchronous Transmit Clock Source (&X).
Operation
Internal clock†
External clock
Receive clock
CHAPTER 6: Asynchronous Operating Commands
(&X)
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