Black Box 3600 User Manual page 82

AT Commands
Use register S30 to select NRZ/NRZI for data format if using SDLC.
Command Operation
&M Async data/dialer mode (V.25 bis disabled)
&M1 Sync data mode / async dialer
&M2 Sync data mode / DTR dials if active
&M3 Sync data mode / manual dial
&M4 Sync data mode (ASCII) with V.25 bis BISYNC dialer
&M5 Sync data mode (NRZ) with V.25 bis SDLC dialer
&M6 Sync data mode with V.25 bis async dialer
&M7 Async data mode with V.25 bis async dialer
&M8 Sync data mode (EBCDIC) with V.25 bis BISYNC dialer
&M9 Sync data mode (EBCDIC, NRZ) with V.25 bis async
dialer
&M10 Sync data mode (ASCII, NRZI) with V.25 bis SDLC
dialer
&M11 Sync data mode (EBCDIC, NRZI) with V.25 bis SDLC
dialer
IMPORTANT: Synchronous DTE must be available to communicate
with the modem if the V.25 bis dialer is enabled.
Make / Break Dial Pulse Ratio &P
Use the &P command for the dial pulse to be on for 39% and off for
61% of one cycle. Use the &P1 command for the dial pulse to be on for
33% and off for 67% of one cycle.
Command
&P
&P1
5-26
Operation
39% : 61% US and Canada
33% : 67%
Modem 3600