Re: [Asterisk-Users] Re: gsm picocells

2006-03-23 Thread Kevin Kirts
Do you happen to now a modell number or a link for this phone?

Thank,
Kevin

On 3/23/06, Greg Oliver <[EMAIL PROTECTED]> wrote:
> On Fri, 2006-03-24 at 13:07 +1100, James Harper wrote:
>
> > I haven't done any sort of research, but I've been told that GSM+DECT
> > phones are available, and while having them seamlessly switch network
> > types during a call probably isn't possible, they can function as a
> > cordless handset.
> >
> > Can anyone confirm or deny this?
>
> Yes, Motorola has a hybrid wi-fi SIP/ GMS/CDMA phone in testing
>
> -Greg
>
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RE: [Asterisk-Users] Re: gsm picocells

2006-03-23 Thread Greg Oliver
On Fri, 2006-03-24 at 13:07 +1100, James Harper wrote:

> I haven't done any sort of research, but I've been told that GSM+DECT
> phones are available, and while having them seamlessly switch network
> types during a call probably isn't possible, they can function as a
> cordless handset.
> 
> Can anyone confirm or deny this?

Yes, Motorola has a hybrid wi-fi SIP/ GMS/CDMA phone in testing

-Greg

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RE: [Asterisk-Users] Re: gsm picocells

2006-03-23 Thread James Harper
> Steve,
> 
> Excellent explanation.
> 
> In a nutshell, it might be better to just use a phone that can
> automatically switch between GSM and WiFi. Of course, that's limited
to
> handful of handsets.

I haven't done any sort of research, but I've been told that GSM+DECT
phones are available, and while having them seamlessly switch network
types during a call probably isn't possible, they can function as a
cordless handset.

Can anyone confirm or deny this?

James
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Re: [Asterisk-Users] Re: gsm picocells

2006-03-23 Thread Leo Ann Boon

Steve,

Excellent explanation.

In a nutshell, it might be better to just use a phone that can 
automatically switch between GSM and WiFi. Of course, that's limited to 
handful of handsets.



Steve Kennedy wrote:


On Thu, Mar 23, 2006 at 01:48:16PM +0100, Tomislav Parina wrote:

 


In article <[EMAIL PROTECTED]>, [EMAIL PROTECTED] says...
   

I believe the OP wants to use GSM handsets as extensions, like running 
your own localized GSM network. That's not the same as using a GSM 
terminal to connect Asterisk to the cellular network.

IP Access makes such products.
http://www.ipaccess.com/products/nanoBTS.htm
But, I don't think it works for CDMA, only GSM.
 


Can you tell me how mobile phone connects to nanoBTS? What SIM card do I have 
to use? Can I have mobile phone with SIM card of my GSM provider, and be 
connected with Asterisk and GSM network of mine provider simultaneously.
   



It's NOT that simple.

You get a nanoBTS and it needs to connect to an MSC (IP.Access also make
a MSC, though it will connect to others). An MSC is a mobile switching
centre, which is effectively a telco switch running SS7 protocols.

There also needs to be an HLR (home location register) which maintains
information about the mobile.

When in coverage of the nanoBTS you'd need to manually get your phone to
connect to a non-preferred network (i.e. to the network ID of the BTS)
or issue your own SIM.

The nanoBTS is just a small part of running a GSM network and is not
functional by itself.

If you did connect to the BTS, then it would send the call to the MSC
which would have to connect to a telephone network.

This would all be manual, if you want to do things with other GSM
networks you need roaming agreements etc (i.e. automatically handing
calls off between your regular GSM network and your own network), but
basically you're running a COMPLETE GSM network.

Depending on where you're based, there are also spectrum issues as to
run a BTS (i.e. GSM network) you need a license to operate in those
bands.

Steve

 



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Re: [Asterisk-Users] Re: gsm picocells

2006-03-23 Thread Steve Kennedy
On Thu, Mar 23, 2006 at 01:48:16PM +0100, Tomislav Parina wrote:

> In article <[EMAIL PROTECTED]>, [EMAIL PROTECTED] says...
> > I believe the OP wants to use GSM handsets as extensions, like running 
> > your own localized GSM network. That's not the same as using a GSM 
> > terminal to connect Asterisk to the cellular network.
> > IP Access makes such products.
> > http://www.ipaccess.com/products/nanoBTS.htm
> > But, I don't think it works for CDMA, only GSM.
> Can you tell me how mobile phone connects to nanoBTS? What SIM card do I have 
> to use? Can I have mobile phone with SIM card of my GSM provider, and be 
> connected with Asterisk and GSM network of mine provider simultaneously.

It's NOT that simple.

You get a nanoBTS and it needs to connect to an MSC (IP.Access also make
a MSC, though it will connect to others). An MSC is a mobile switching
centre, which is effectively a telco switch running SS7 protocols.

There also needs to be an HLR (home location register) which maintains
information about the mobile.

When in coverage of the nanoBTS you'd need to manually get your phone to
connect to a non-preferred network (i.e. to the network ID of the BTS)
or issue your own SIM.

The nanoBTS is just a small part of running a GSM network and is not
functional by itself.

If you did connect to the BTS, then it would send the call to the MSC
which would have to connect to a telephone network.

This would all be manual, if you want to do things with other GSM
networks you need roaming agreements etc (i.e. automatically handing
calls off between your regular GSM network and your own network), but
basically you're running a COMPLETE GSM network.

Depending on where you're based, there are also spectrum issues as to
run a BTS (i.e. GSM network) you need a license to operate in those
bands.

Steve

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