On 08/01/12 23:30, Panayiotis Karabassis wrote:
> On 01/08/2012 12:48 PM, Scott Ferguson wrote:
> [...]

<snipped>

>
> ^DSFLOWRPT:00000010,00000000,0000002C,000000000000 0000,0000000000000059,00002000,0000C000
>
>
> [...]

comgt won't parse DSFLOWRPT - I might be able to fix that.




1. Please enable usb-modeswitch logging by setting "EnableLogging=1"
it's the last option in the config file:-
# nano /etc/usb_modeswitch.conf

2. Then restart your computer, connect the modem.

3. Please take note of the LED colours and flash rate throughout and
post the results.

4. Run the following for a few minutes then adding the output to the post:-
# cat /dev/USBtty1 | grep RSSI

5. Please run the following and post it's output to paste.debian.org,
then put the link to the paste page into the post:-
$ dmesg | grep -i 'warn|fail|error|usb|tty';cat
/var/log/usb_modeswitch*

<snipped>

>> Do you have a PIN set?

Is that ^ a no??

>
> It's a contract, I pay a fixed amount each month and have 1Gb data
> volume. The modem came with the contract.

Thanks.

I'll have a look at your post tomorrow. Shouldn't be too hard to fix.


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On Δευ, 2012-01-09 at 00:33 +1100, Scott Ferguson wrote:
> On 08/01/12 23:30, Panayiotis Karabassis wrote:
> > On 01/08/2012 12:48 PM, Scott Ferguson wrote:
> > [...]
>
> <snipped>
>
> >
> > ^DSFLOWRPT:00000010,00000000,0000002C,000000000000 0000,0000000000000059,00002000,0000C000
> >
> >
> > [...]
>
> comgt won't parse DSFLOWRPT - I might be able to fix that.
>
>
>
>
> 1. Please enable usb-modeswitch logging by setting "EnableLogging=1"
> it's the last option in the config file:-
> # nano /etc/usb_modeswitch.conf
>
> 2. Then restart your computer, connect the modem.
>
> 3. Please take note of the LED colours and flash rate throughout and
> post the results.
>
> 4. Run the following for a few minutes then adding the output to the post:-
> # cat /dev/USBtty1 | grep RSSI
>
> 5. Please run the following and post it's output to paste.debian.org,
> then put the link to the paste page into the post:-
> $ dmesg | grep -i 'warn|fail|error|usb|tty';cat
> /var/log/usb_modeswitch*
>
> <snipped>
>
> >> Do you have a PIN set?
>
> Is that ^ a no??

It's a no, sorry I forgot.

> >
> > It's a contract, I pay a fixed amount each month and have 1Gb data
> > volume. The modem came with the contract.
>
> Thanks.
>
> I'll have a look at your post tomorrow. Shouldn't be too hard to fix.

Thanks, you'll have your information tomorrow...

>
> Cheers
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>



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On Δευ, 2012-01-09 at 00:33 +1100, Scott Ferguson wrote:

<snip>

> 1. Please enable usb-modeswitch logging by setting "EnableLogging=1"
> it's the last option in the config file:-
> # nano /etc/usb_modeswitch.conf
>
> 2. Then restart your computer, connect the modem.

Done.

> 3. Please take note of the LED colours and flash rate throughout and
> post the results.

There was a long pause at the beginning, then the green light flashed
twice, a shorter pause, then the green light flashed twice again. Then
at short intervals the blue or green light flashes once. I can't find
any other pattern.

> 4. Run the following for a few minutes then adding the output to the post:-
> # cat /dev/USBtty1 | grep RSSI

^RSSI: 11
^RSSI: 13
^RSSI: 12
^RSSI: 13
^RSSI: 15

> 5. Please run the following and post it's output to paste.debian.org,
> then put the link to the paste page into the post:-
> $ dmesg | grep -i 'warn|fail|error|usb|tty';cat
> /var/log/usb_modeswitch*

paste.debian.net/151464

> >> Do you have a PIN set?
>
> Is that ^ a no??

I don't have a PIN set.

<snip>

> Thanks.
>
> I'll have a look at your post tomorrow. Shouldn't be too hard to fix.

Again thank you.

>
> Cheers
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> https://addons.mozilla.org/en-US/firefox/collections/Scott_Ferguson/debian/
>
>



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On 09/01/12 08:17, Panayiotis wrote:
> On Δευ, 2012-01-09 at 00:33 +1100, Scott Ferguson wrote:
>

<snipped>

>
>> 3. Please take note of the LED colours and flash rate throughout and
>> post the results.
>
> There was a long pause at the beginning, then the green light flashed
> twice, a shorter pause, then the green light flashed twice again. Then
> at short intervals the blue or green light flashes once. I can't find
> any other pattern.

The switching between blue and green means you have a terrible signal -
and 3G is only intermittently available.

You previously mentioned that you believed the modem worked well with
Windoof - I fail to understand how the OS influences reception.
Atmospherics, orientation of the modem, things blocking and reflecting
signals, varying numbers of subscribers, base station variations, etc -
"seem" more feasible explanations for influencing signal reception.

>
>> 4. Run the following for a few minutes then adding the output to the post:-
>> # cat /dev/USBtty1 | grep RSSI
>
> ^RSSI: 11
> ^RSSI: 13
> ^RSSI: 12
> ^RSSI: 13
> ^RSSI: 15

Received Signal Strength Indicator - the low number and variations is
are in accordance with the LED information. NOTE: it's a poor indicator
of signal "quality" - need SNR and BER to calculate that.


You could try and see if you get SNR and BER data. I don't have that
particular modem so I've no idea if that info is provided.

The following output might prove instructive:-
# cat /dev/ttyUSB1 | grep 'RSSI/|SNR/|SIR/|SINR/|BER'


<snipped>

>
> paste.debian.net/151464

Thanks - that looks fine. I don't believe the apparent failure to set an
endpoint is a problem.

<snipped>

I strongly suspect the main problem is signal reception. There is also a
possibility your ppp settings are less than optimal.

If we can boost your signal and reduce the amount of possible noise
we'll have a useful basis for testing the ppp profile.

Nearly there :-)
You can spend money on a signal amplifier, and antenna, or a reflector -
or I can give you instruction on a 5 minute kludge that'll do the same
thing. What is the longest decent[*1] USB cable you have available to
connect the modem too?


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On Du, 08 ian 12, 11:15:35, Panayiotis Karabassis wrote:
>
> My kernel is 3.0.4-libre-lemote. The output of lsusb follows:

Could you also try with Debian stock kernel?

Kind regards,
Andrei
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I plan to, but I have to recompile it with some special patches and
options, otherwise it won't work...

Thanks.

On Δευ, 2012-01-09 at 09:52 +0200, Andrei Popescu wrote:
> On Du, 08 ian 12, 11:15:35, Panayiotis Karabassis wrote:
> >
> > My kernel is 3.0.4-libre-lemote. The output of lsusb follows:
>
> Could you also try with Debian stock kernel?
>
> Kind regards,
> Andrei



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On Δευ, 2012-01-09 at 10:52 +1100, Scott Ferguson wrote:
<snip>
> Nearly there :-)
> You can spend money on a signal amplifier, and antenna, or a reflector -
> or I can give you instruction on a 5 minute kludge that'll do the same
> thing. What is the longest decent[*1] USB cable you have available to
> connect the modem too?

What type of USB cable will I need? There are some USB extender cables,
or I can try a hub, right? What is the idea, to put the modem in a spot
with better reception?

My hope is based on the fact that my cellphone which also has a Vodafone
connection, can connect from the same places, at higher speeds, usually
3G, while my laptop is connected to GPRS. Hence, I deduce it's not a
network issue.

Can you give me some names on the products you mentioned? Where would I
connect the antenna? There is no slot on the modem.

You have my gratitude, you have given me a lot of help.

BTW, I tried many methods (comgt and AT commands) to put the modem in
3G-only mode, and they seem to be ignored... :-)

I guess the disconnects happen when signal strength drops beyond a low
level.

>
> Cheers
> --
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> https://addons.mozilla.org/en-US/firefox/collections/Scott_Ferguson/debian/

Many thanks again,
Panayiotis



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On 09/01/12 20:51, Panayiotis wrote:
> On Δευ, 2012-01-09 at 10:52 +1100, Scott Ferguson wrote: <snip>

<snipped>

>
> What type of USB cable will I need?

The same length as a piece of string.
;-p

Depends on how far you have to reach - about a metre is handy for signal
testing, depending on the weight of your computer and length of the
extension cord (that's a portable isn't it?).

> There are some USB extender cables,

If you need to go 5 - 25 metres, then yes.
These are what I use - you should be able to find something similar
locally:-
http://www.jaycar.com.au/productView.asp?ID=XC4839

> or I can try a hub, right?

I wouldn't recommend one for this.

> What is the idea, to put the modem in a spot with better reception?

Um. yes :-)

When you've found where that spot is.
If you have a one metre cable you can do some testing. If you know where
the local tower is you'll have a head start.

Make sure the cable you use is a heavy one - not one of those nasty
skinny cables.

>
> My hope is based on the fact that my cellphone which also has a
> Vodafone connection, can connect from the same places, at higher
> speeds, usually 3G, while my laptop is connected to GPRS. Hence, I
> deduce it's not a network issue.

I would tend to agree - sort of. The phones seem to have better
reception - the one sitting beside me shows 4 bars. I have three
different USB modems I use, with three different carriers - none of them
gets a decent signal in my office. Acceptable if placed up high - decent
when put outside under the eaves - excellent 10 metres above the roof.
Using a reflector to shield the modem from reflected signals helps too.

>
> Can you give me some names on the products you mentioned? Where
> would I connect the antenna? There is no slot on the modem.

You could open your modem (void the warranty), judiciously disconnect
the on-board antennae. It'll be etched onto the circuit board so you'd
just scratch to disconnect - then solder on a lead to a home-made Yagi
or store bought antennae. But probably not necessary - or (recommended
if you need instructions).

>
> You have my gratitude, you have given me a lot of help.
>
> BTW, I tried many methods (comgt and AT commands) to put the modem in
> 3G-only mode, and they seem to be ignored... :-)

Which AT commands and what responses did you get?
And - are you sure you're not already locked to 3G?
If you are getting a green light - you won't get 3G. Might have to get a
decent signal first *if* the problem isn't elsewhere.

Try this (patent pending):-
http://paste.debian.net/151518

>
> I guess the disconnects happen when signal strength drops beyond a
> low level.

That would be my "suspicion" - proof is nice :-)

Green blinking
A GPRS network has been found – you could connect
Green solid
Connected via GPRS
Blue blinking
A 3G network has been found – you could connect
Blue solid
Connected via 3G
Light blue blinking
A 3G Broadband network has been found – you could connect
Light blue solid
Connected via 3G Broadband.

<snipped>


Cheers

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On Δευ, 2012-01-09 at 22:03 +1100, Scott Ferguson wrote:
<snip>
> Which AT commands and what responses did you get?
> And - are you sure you're not already locked to 3G?
> If you are getting a green light - you won't get 3G. Might have to get a
> decent signal first *if* the problem isn't elsewhere.
>
> Try this (patent pending):-
> http://paste.debian.net/151518

You've gone to a lot of trouble for me, I am very grateful. I did not
explain my situation well, I have internet at home, I use the 3G modem
when I am outside, at various locations (usually coffee shops), so this
setup will be cumbersome... :-) But thanks, I'll try it when I find
time.

The AT commands I used are from this page:

http://forum.huawei.com/jive4/thread.jspa?threadID=320231&tstart=50&orderStr=26

The response is "OK", but still I get the green light.

Just two quick questions:
a) Is the 3G-locking a one-off process, or do I have to repeat it every
time I connect?
b) If it isn't, do you know how I can send commands to the modem while
it is connected to the Voda(fail) network? The "cu" program refuses to
send the commands while the modem is in use, in all the ttys.
<snip>
> Green blinking
> A GPRS network has been found – you could connect
> Green solid
> Connected via GPRS
> Blue blinking
> A 3G network has been found – you could connect
> Blue solid
> Connected via 3G
> Light blue blinking
> A 3G Broadband network has been found – you could connect
> Light blue solid
> Connected via 3G Broadband.

Thanks, I did not know about light-blue.

<snip>

Again many thanks, please don't give so much time to this, I feel guilty
like I am using you... :-)

Best regards,
Panayiotis


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On 10/01/12 03:52, Panayiotis wrote:
> On Δευ, 2012-01-09 at 22:03 +1100, Scott Ferguson wrote:
> <snip>

<snipped>

> You've gone to a lot of trouble for me, I am very grateful. I did not
> explain my situation well, I have internet at home, I use the 3G modem
> when I am outside, at various locations (usually coffee shops), so this
> setup will be cumbersome... :-) But thanks, I'll try it when I find
> time.

Do you plug the modem into your box directly or through a cable?

If it's the cable method try different cables. If it's not a cable try a
cable - the plane of the built in antennae may not be optimally orientated.

Also, if possible, borrow someone's Vodaphone modem that is known to
have a good signal in a given coffee shop - try that with your SIM in
it. You may need to change your connection settings slightly if it uses
a different device file - but everything else should stay the same, and
most modems will be detected and auto-flipped by your version of
usb-modeswitch.

I'd suggest you use the described rig to test at home so that you can
rule out (prove) it's not other factors causing problems (there are many).

>
> The AT commands I used are from this page:
>
> http://forum.huawei.com/jive4/thread.jspa?threadID=320231&tstart=50&orderStr=26

Thanks I've added that to my reference files.

>
> The response is "OK", but still I get the green light.

Then you are locked to 3G, thus non-availability of 3G *will* causes
connection drops.

Have you considered just tethering to your mobile phone?
You can probably use your modems SIM in it if it's not locked to a
different carrier.

>
> Just two quick questions:
> a) Is the 3G-locking a one-off process, or do I have to repeat it every
> time I connect?

I'ts one off.

<snipped>

>
> Thanks, I did not know about light-blue.

Did you not get a "Fine" manual with the modem? ;-)

I looked at the Quickstart Guide for the K3770-Z

>
> <snip>
>
> Again many thanks, please don't give so much time to this, I feel guilty
> like I am using you... :-)

Assuage the guilt - or not, I'll never know. Buy Debian a nice beer:-
http://www.spi-inc.org/donations/
:-D

>
> Best regards,
> Panayiotis
>
>


Cheers

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