How to get Huawei EC1561 USB modem working under FreeBSD 8.2?

Robert Bonomi bonomi at
Thu Jul 26 12:08:20 UTC 2012

> From: Manish Jain <bourne.identity at>
> Date: Thu, 26 Jul 2012 15:37:23 +0530
> Subject: Re: How to get Huawei EC1561 USB modem working under FreeBSD 8.2?
> On 25-Jul-12 21:06, Erich Dollansky wrote:
> I did some tinkering to make _some_ progress. My APC UPS is working fine 
> now under FreeBSD (8.2-RELEASE, amd64). I think I also now have the 
> correct device setting in ppp.conf (/dev/cuaU0.0, also symlink'ed as 
> /dev/modem via devfs.conf). But the modem still does not speak to 
> internet. 

[[ sneck logfile entries ]]

> Could it be that I am using the wrong AT commands ? C

"Best guess" possibilities -- 
  1) wrong serial port
  2) wrong speed.

Recommend using a simple teminal program, like 'cu' or 'kermit',  try
connecting to each serial port, in succession, and see what happens
when you type the following two lines:
    ATI0          { that is 'AT', then a capital i, followed by a zero }

The idea is to _first_ get 'basic communications' with the modem working, 
_then_ try the chat scipt, then get ppp woking.

Trying to debug -everything- at the same time is a guaanteed recipie for
frustation -- as you're finding out.

One of your prior boot logs showed that _at_that_point_ the O/S was *NOT* 
recognizing the modem.  Log lines showed "unknown device  0x140b".  I
presume you have -that- resolved.

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