[CentOS] Adding an MT9234ZBA-USB modem to CentOS6.3

James B. Byrne byrnejb at harte-lyne.ca
Thu Oct 18 11:52:46 EDT 2012


On Thu, October 18, 2012 11:46, James B. Byrne wrote:
>
> On Wed, October 17, 2012 12:49, James B. Byrne wrote:
>> How, exactly, does CentOS-6.3 with udev recognize an USB modem when
>> it is plugged in.  How is it indicated?  What other configuration is
>> required?
>
> I now have the subject modem device attached to a kvm guest instance.
> I can connect to it from the guest using picocom.  I can see the TR
> light go on.  I cannot find a baud rate with which to issue AT
> commands.
>

P.S.

# wvdialconf
Editing `/etc/wvdial.conf'.

Scanning your serial ports for a modem.

ttyS0<*1>: ATQ0 V1 E1 -- failed with 2400 baud, next try: 9600 baud
ttyS0<*1>: ATQ0 V1 E1 -- failed with 9600 baud, next try: 115200 baud
ttyS0<*1>: ATQ0 V1 E1 -- and failed too at 115200, giving up.
Modem Port Scan<*1>: S1   S2   S3
WvModem<*1>: Cannot get information for serial port.
ttyACM0<*1>: ATQ0 V1 E1 -- OK
ttyACM0<*1>: ATQ0 V1 E1 Z -- OK
ttyACM0<*1>: ATQ0 V1 E1 S0=0 -- OK
ttyACM0<*1>: ATQ0 V1 E1 S0=0 &C1 -- OK
ttyACM0<*1>: ATQ0 V1 E1 S0=0 &C1 &D2 -- OK
ttyACM0<*1>: ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0 -- OK
ttyACM0<*1>: Modem Identifier: ATI -- Agere OCM V.92 MT9234ZBA-USB
Data/Fax Modem Version 1.02l
ttyACM0<*1>: Speed 4800: AT -- OK
ttyACM0<*1>: Speed 9600: AT -- OK
ttyACM0<*1>: Speed 19200: AT -- OK
ttyACM0<*1>: Speed 38400: AT -- OK
ttyACM0<*1>: Speed 57600: AT -- OK
ttyACM0<*1>: Speed 115200: AT -- OK
ttyACM0<*1>: Speed 230400: AT -- OK
ttyACM0<*1>: Speed 460800: AT -- Speed 460800: AT -- Speed 460800: AT
-- Max speed is 230400; that should be safe.
ttyACM0<*1>: ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0 -- and failed too at
115200, giving up.


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James B. Byrne                mailto:ByrneJB at Harte-Lyne.ca
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