Solvline MultiModem - Manual (Page 30)

30
Using AT Commands
- AT&Pn : Make/Break Dial Pulse Ratio
Selects the intervals between the off hook (make) and the on hook while using a pulse dialing.
. Parameter : n = 0, 1, 2
. Default : 0
&P0, P : 39% 61% make/break @10PPS
&P1 : 33% 67% make/break @10PPS
&P2 : 33% 61% make/break @20PPS
&P3 : 33% 71% make/break @20PPS
- AT&Qn : Communication Mode
Basically, this modem supports three communication modes; asynchronous, synchronous, and
error correction modes. In the case of a parallel host interface, the synchronous mode and the
direct mode are impossible.
. Parameter : n = 0~6
. Default : 5
&Q0 = Direct Mode Asynchronous System
By this mode, the DTE speed relates to the speed of the telephone line.
&Q1 = Synchronous Mode 1 Operation
Operates with an asynchronous mode in the command mode, and converts to a synchronous
mode when connected. By performing the DTR signal with the On To Off changes or when the
received carrier is lost during the time (default 1.4 second) defined in the S10, it is disconnected
or converts to the command mode.
&Q2 = Synchronous Mode 2 Operation
When the DTR is detected with the On To Off changes, it automatically dials the saved
telephone number. By performing the DTR signal with the On To Off changes or when the
received carrier is lost within the time (default 1.4ch) defined in the S10, it is disconnected.
&Q3 = Synchronous Mode 3 Operation
When cutting off the connection, or while the DTR signal carries out the same functions as the
data/talk switch, or the DTR signal whose mode is converted into the asynchronous mode is
carried out with the On to Off changes, or the received carrier is lost within the time (default
1.4ch) defined in the S10, it is disconnected.
&Q4 = NO Operation
This command shows the OK result code, but does not operate.
&Q5 = Error Correction Operation
The modem is negotiated by the error correction link. If the link is not negotiated, it is
disconnected or falls back to the general asynchronous connection (Initial value).