Connecting a US Robotics 56K external Modem onto a M1 system

Information on connecting a US Robotics 56K external Modem onto a Meridian 1 system

These settings should work for a Meridian Option 11 - 81 TTY Port

The tests were carried out using "TTY 2" with "USER" = (SCH) ONLY! On a Option 11 system.

NOTE!
Do not have "USER" = (MTC,BUG,CTY, etc) as the TTY port could become disabled!.

Also make sure that the standard TTY port settings are used i.e..
"9600" baud rate word length = 8, 1 stop bit & no parity.

ATI3
U.S. Robotics 56K Voice EXT Rev. 12.1.0 (External stand alone type modem)

ATI4
U.S. Robotics 56K Voice EXT Settings...

B0 E1 F1 L2 M0 Q1 V1 X4 Y0
SPEED=9600 PARITY=N WORDLEN=8
DIAL=TONE OFF LINE

&A3 &B0 &C1 &D0 &H1 &I0 &K0
&M4 &N6 &R1 &S0 &T5 &U0 &Y1

S00=002 S01=000 S02=043 S03=013 S04=010 S05=008 S06=004
S07=060 S08=002 S09=006 S10=007 S11=070 S12=050 S13=000
S15=000 S16=000 S18=000 S19=000 S21=010 S22=017 S23=019
S25=005 S27=001 S28=008 S29=020 S30=000 S31=000 S32=000
S33=000 S34=000 S35=000 S36=000 S38=000 S39=011 S40=000
S41=001 S42=126

LAST DIALLED #:

ATI9
(1.0USR9180\\Modem\PNPC107\U.S. Robotics 56K Voice EXT)FF

Some other Notes!
Use ATS0=2 C/R (Number of rings for modem to answer = 2)
(I've found that a minimum number of 2 rings is best!)
Use ATM0 C/R (Speaker on modem = OFF & ATM1 = Speaker on until connected)

Before you disconnect the line connection, Make sure that you are back into the Meridian SL1 program!.
Also key "+++" first & wait until you get the "OK" prompt. (It takes you back to the modem!)
If you don't do this, then the TTY port can disable it's self or the modem will lock up.

How to configure the US Robotics 56K external Modem via a RS232 lead into your P.C.

Key in the following à

ôAT&A3&B0&C1&D0&H1&I0&K0&M4&N6&R1&S0&T5&U0&Y1ö C/R.
The modem will answer with ôOKö
Followed by ôATB0E1F1L2M0Q1V1X4Y0ö C/R.
Enter the ôSö Registers as shown in bold above. i.e.. ôATS0=2ö C/R.

Finally enter ôAT&W0ö C/R to store the data into memory. Power Modem "OFF" & "ON".
The prompt ôATI4ö C/R will list out the values stored in memory.

To connect the Modem at 14400 baud rate & Meridian 1 TTY port at 19200 baud rate, Then use the settings ôAT&N8ö C/R followed by ôAT&W0ö C/R & power off & on the Modem again.