How to set modem baudrate? 1

[Petruska6432]

I have AOpen FM56-PM, with Rockwell chip. I tried
AT#BDR=4, but it gives error.
Thanks.

 

[Comtech]

What exactly are you trying to do?
The modem defaults to a V.90 protocall, with a "baud" rate of the maximum your phone line can handle, usually around 43000 to 53000 bps.
If you want to specify a certain speed, why?
I can give you the AT commands to set it anywhere you like. Cheers,
Jim

http://members.cnx.net/reboot/

 

[Petruska6432]

Jim,
I need to do remote administration of a Meridian PBX with a serial port working at 9600 bps. If I innitiate connection at other speed, the connection with the remote modem establishes, but the serial port of the PBX doesn´t understand my characters and vice-versa.
As I said, AT#BDR=x (x=1 to 5) command didn´t work with my AOpen FM56-PM modem (it displays "error&quot, and I can´t find the exact AT command to do so.
Thanks.
Pedro

 

[Comtech]

Try this:
+MS=V34,0,,,,9600 Cheers,
Jim

http://members.cnx.net/reboot/

 

[Petruska6432]

Thanks Jim,
AT+MS=V34,0,,,,9600 worked, and connection stablished at 9600. Unfortunately I must have other problem, and I continue receiving bad characters, perhaps I will ask you again after I do some trials.
Thank you again and best regards.
Pedro (from Argentina)

 

[Comtech]

It's the protocall.
You're currently using V.34 (obviously from the init I gave you).
Check to see if you need a different protocall. Possibly Bell or V.32 or somesuch.
If you do, let me know, and I'll get the init for you. Cheers,
Jim

http://members.cnx.net/reboot/

 

[Petruska6432]

Yes Jim, I tried V32Bis (AT+MS=V32B,0,,,,9600), and it works completely OK.
Thank you very much from Argentina.
Pedro

 

[Comtech]

Glad to help, thanks. Cheers,
Jim

http://members.cnx.net/reboot/