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On Saturday 23 Nov 2013 12:35:35 Mick wrote: |
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> On Saturday 23 Nov 2013 11:44:58 Robin Atwood wrote: |
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> > On Monday 18 November 2013, Mick wrote: |
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> > > After more than a year I tried to tether my mobile to my laptop to |
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> > > connect to GPRS using kppp. I noticed that kppp hangs and I have to |
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> > > kill it, while it hangs with "Modem Ready". I can query the modem |
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> > > successfully using kppp, and it responds to ATI initialisation |
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> > > commands, so now I am trying to understand what is wrong with it and |
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> > > why the connection does not complete. |
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> > > |
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> > > ifconfig -a does not show rfcomm0, but this may be because it never |
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> > > completes the connection to my mobile phone provider's network, so the |
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> > > ppp link is not established. |
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> > > |
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> > > I can see that the rfcomm device is being created: |
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> > > |
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> > > # ls -la /dev/rfcomm* |
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> > > crw-rw---- 1 root uucp 216, 0 Nov 17 15:51 /dev/rfcomm0 |
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> > > |
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> > > and it does try to connect until it freezes showing "Modem Ready", but |
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> > > I am getting no more errors to know what to do next. |
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> > > |
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> > > I was thinking that this may be related to the udev NIC renaming change |
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> > > that happened within the last year. However, I never had any udev |
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> > > rules to manage rfcomm and from what I recall vaguely when the udev |
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> > > update came, I had no problem connecting (but memory may be failing |
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> > > me after all this time). It could of course be related to my mobile |
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> > > phone providers settings - I haven't changed these for a long time and |
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> > > looking on the Internet I can't find if they are any different now. |
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> > > |
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> > > How should I troubleshoot this further? |
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> > > |
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> > > Could someone please hold my hand to set up ppp so that I can avoid |
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> > > kppp and its freezing behaviour? |
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> > |
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> > Have you started the rfcomm service? I remember having trouble until I |
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> > did that. |
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> |
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> Thanks Robin, yes I started bluetooth and rfcomm as I used to do. I wonder |
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> if this is an ISP problem, i.e. they are no longer offering GPRS on this |
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> mobile phone account, or if I need a different login. I'll try again |
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> later to see if this is a temporary fault when I get a minute. |
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|
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I set up ppp but wasn't able to get anywhere: |
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|
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Dec 4 16:42:30 pppd[5167]: pppd 2.4.5 started by michael, uid 0 |
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Dec 4 16:42:31 pppd[5167]: Serial connection established. |
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Dec 4 16:42:31 pppd[5167]: Using interface ppp0 |
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Dec 4 16:42:31 pppd[5167]: Connect: ppp0 <--> /dev/rfcomm0 |
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Dec 4 16:42:32 pppd[5167]: Serial line is looped back. |
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Dec 4 16:42:32 pppd[5167]: Connection terminated. |
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|
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The connection bails out. I don't understand what the message "Serial line is |
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looped back." means. Any ideas? |
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|
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|
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Anyway, after all that effort, I discovered that the ISP has decided to block |
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tethering, because they are now peddling 4G services and want people to buy |
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separate data accounts for tablets. Those of us who only occasionally need to |
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use our mobile phone as a modem to get on the Internet are left without a |
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service. :-( |
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|
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Would you know how the ISP's network equipment knows if the phone is |
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connecting and sending GPRS packets on its own, or due to a PC initiating the |
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connection? |
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-- |
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Regards, |
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Mick |