3G modem problems

[Heath Miller]

On Tue, 08 Jan 2008 23:23:41 +1030
Tony Bazeley <tbag at internode.on.net> wrote:

> Marius Gedminas wrote:On Fri, Jan 04, 2008 at 11:06:28AM +1030, Tony
> Bazeley wrote: I am having trouble connecting a 3G modem.
> The particular usb modem (BP3-EXT) is supplied in Australia through 
> Telstra, who refuse to support Linux.
> 
> There has been some excellent work on this problem (especially 
> http://quozl.linux.org.au/bp3-usb/) and people have reported
> successful connections.
> I have been able to follow this work to connect to the modem but
> there seems to be some sort of block.
> 
> I quite new to Linux, ppp and modem connections and have pasted my 
> connection attempt below.
> The connection seems to progress OK, until negotiations about 
> compression commence.
> 
> I would be extremely grateful for any advice on how to proceed.
>     ...
>   john at laptop:~$ sudo pppd noauth nodetach /dev/ttyUSB1 user ''
> connect ...
>   sent [CCP ConfReq id=0x1 <deflate 15> <deflate(old#) 15> <bsd v1
> 15>] sent [IPCP ConfReq id=0x1 <compress VJ 0f 01> <addr 0.0.0.0>
> 15><ms-dns1 0.0.0.0> <ms-dns3 0.0.0.0>]
> rcvd [LCP ProtRej id=0x13 80 fd 01 01 00 0f 1a 04 78 00 18 04 78 00
> 15 03 2f] Protocol-Reject for 'Compression Control Protocol' (0x80fd)
> received rcvd [IPCP ConfNak id=0x1 <ms-dns1 10.11.12.13> <ms-dns3
> 10.11.12.14> <ms-wins 10.11.12.13> <ms-wins 10.11.12.14>] 
> Try to disable Compression  Control Protocol negotiation with noccp:
> 
>   john at laptop:~$ sudo pppd noauth noccp nodetach /dev/ttyUSB1 user ''
> connect 
> 
> Marius Gedminas
>    Thanks for the response, Marius
> $ sudo pppd noauth noccp nodetach /dev/ttyUSB1 user '' connect
> produced the error "pppd: too few parameters for option connect"
> 
> Puzzled over this for a bit and realised that some connect parameters
> were required so I used:
> 
> sudo pppd noauth nodetach debug noccp /dev/ttyUSB1 user '' connect
> '/usr/sbin/chat ABORT BUSY ABORT "NO CARRIER" "" ATZ OK ATDT*99#
> CONNECT' amended from http://quozl.linux.org.au/bp3-usb/
> 
> which seemed to connect to the modem, whether or not I used the
> option nocpp.  In both cases the the modem seems to stop responding,
> and the client hangs up. Not sure what to do now - perhaps construct
> a more comprehensive chat file which attempts to log on. I've
> attached the debug output file.
> 
> Tony Bazeley
> 
> 
> 
> 
turn off the lcp echo request I was having this issue with a tethered
Treo 680 on AT&T in the US so it maybe the same. Are you able to browse
while its attempting to connect then dies?