[H-GEN] 3G router with OpenWRT

[gavin duley]

On 31 Mar 2009, at 07:28, Nick Kwiatkowski wrote:

> Gavin Duley wrote on 31/03/2009 02:27:24 PM:
>
>>> Details of the unit can be found here:
>>> http://www.netcomm.com.au/products/3g/n3g002w
>>
>> Thanks! That sounds like it would work well for me too.
>>
>> I noticed on the Umart webpage that the one user review criticises it
>> as being unreliable, though. Could just be that person had bad luck  
>> --
>> how reliable have you found it to be.
>>
> I did a firmware update shortly after I got the unit. A couple of  
> people
> had some problems connecting, but that turned out to be their wireless
> settings. Something not connecting properly with the 802.11b  
> preamble(short
> vs long). When set back to the default they connected fine.

Okay, thanks. I'll make certain to upgrade the firmware when I get it.

>> I'm hoping it should work. The Virgin service was one of the things
>> that made me think of trying to do this -- but since I don't make  
>> that
>> many phone calls, their AU$80/month service is a bit excessive/
>> expensive...
>>
> Only thing I can recommend in this space, is to be careful with the
> selection ATA / VoIP box that you use. I initially brought a  
> SPA-3102, as
> it was cheap, but had the physical line failover as a back-up. The  
> issue
> that I had, and I understand now that this is common. Most people  
> connect a
> ATA device with a DECT phone, that caused be no end of trouble as to  
> get
> the phone impedance correct is a nightmare. The result was either  
> echo on
> our side of the call or the receiver.
>
> This is because of the artifacts that you get from going Analogue ->
> Digitial for the DECT -> Analogue for the phone -> Digitial for VoIP  
> ->
> Analogue for the receiving POTS. I have ended up replacing the  
> SPA-3102
> with a Siemens C470-IP, which is a DECT VoIP phone. This means that  
> now I
> have Analogue -> Digitial for VoIP -> Analogue for the receiving  
> POTS; and
> much clearer voice calls.

I had been debating as to whether to go for an ATA + analogue phone or  
a VoIP phone. It sounds like I would be best just getting a VoIP  
phone. Out of interest, are there any cheap and reliable Australian- 
based VoIP hardware resellers that you could recommend? Most of the  
ones I have bookmarked seem to be either US or UK based, and I'm a  
little reluctant to just trust whatever the first one I find on Google  
is.

At the moment I'm using a set up fairly like the one you describe,  
with a DECT phone and an ATA (part of the ADSL modem). So far I've had  
no problems with it (touch wood!). Since where I'll be using the 3G- 
based system I'm thinking of, I almost certainly won't have access to  
a landline so having the option of using that as a backup is not  
really relevant.

> Something I have yet to look at is doing this over 3G data link.  
> Only have
> to do this because I'm on a Telstra wholesale rim that is a  
> capacity, so
> latency is crap from 6pm to midnight.


I've not used it myself yet -- I don't even have a 3G mobile 'phone.  
 From others I've spoken to who do use 3G data links, the main problem  
seems to be that speed can be quite variable...

thanks,

gavin,

-- 
Thieves respect property; they merely wish the property to become
their property that they may more perfectly respect it.
                 -- G.K. Chesterton, "The Man Who Was Thursday"

Gavin Duley
<gpd at snoopy.apana.org.au> <gpd at sdf-eu.org>
WWW: http://gpd.sdf-eu.org/