Re: [RFC] Number portability hooks

2003-08-11 Thread Benjamin Lee
For what it's worth, 

I believe the "maturity" of the Australian mobile network is (continuously)
just behind that of the United Kingdom... so currently, here, down under, I
highly doubt we, as SMSC clients, have direct access to MSISDN porting
information, either via SS7 or similar. I've heard rumours that location
information may be provided soon... but there are also legislative /
privacy issues.

The arrangement in Germany sounds pretty sweet, though.

On Monday, 2003-08-11 at 10:49:06 PM, Steve Kennedy scribbled:
> On Mon, Aug 11, 2003 at 12:20:38PM +0200, Stipe Tolj wrote:
> 
> > as many countries deploy MSISDN number portability in their GSM
> > networks, which means you as a end-customer can take your MSISDN to an
> > other operator when you switch, makes things a bit more complicated on
> > the SMS gateway side.
> 
> Unfortunately it's not too easy to get porting info, as it will be
> stored in the HLR of the operator, and unless you have an SS7 connection
> to them you'll never know the number's been ported.
> 
> i.e. say in UK you have 07775 123456, this is a Vodafone number
> (allocated in a block by Oftel). If the user ports it, they will put an
> entry into their HLR which points the number to another network, and
> they put it in their HLR.
> 
> 
> Maybe now they are opening up location based services, they'll also
> allow other access to HLR's ???
> 
> Steve
> 
> -- 
> NetTek Ltd Phone/Fax +44-(0)20 7483 2455
> SMS steve-pager (at) gbnet.net [body] gpg 1024D/468952DB 2001-09-19

-- 
Benjamin Lee
Melbourne, Australia "Always real."http://www.realthought.net/

__
[Maturity consists in the discovery that] there comes a critical moment
where everything is reversed, after which the point becomes to understand
more and more that there is something which cannot be understood.
-- S. Kierkegaard



Re: [RFC] Number portability hooks

2003-08-11 Thread Steve Kennedy
On Mon, Aug 11, 2003 at 05:28:23PM +0200, Andreas Fink wrote:

> 
> On Montag, August 11, 2003, at 05:15  Uhr, Steve Kennedy wrote:
> >On Mon, Aug 11, 2003 at 05:01:50PM +0200, Nisan Bloch wrote:
> >>I would prefer to see some sort of lookup interface.. Something like a
> >>"HLR" box.
> >>Of more importance is how to implement the lookup and when (as this 
> >>will
> >>incur a msg cost)? Use some third party? Do some SS7 integration? 
> >>Booktrout
> >>have some nice APIs with their SS7 cards.
> >>Also of course if we keep the numbers in a hash table, when does one
> >>refresh?
> >Od course this begs the question, how does one query an HLR using SS7,
> This is pretty simple. you ask the HLR about the location of a user to 
> deliver SMS and you will get back its IMSI number which starts with the 
> mobile network country code and then the mobile network code.
> We're doing it on our SS7 system but so far no one has shown interest 
> to use it so we didnt develop this functionality further.

Yup, maybe elsewhere in EU, but in the UK it's difficult ... there's
probably a market for it over here ...


Steve

p.s. assuming Switzerland is almost EU :)

-- 
NetTek Ltd Phone/Fax +44-(0)20 7483 2455
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Re: [RFC] Number portability hooks

2003-08-12 Thread Steve Kennedy
On Mon, Aug 11, 2003 at 11:07:47PM +1000, Benjamin Lee wrote:

> For what it's worth, 
> I believe the "maturity" of the Australian mobile network is (continuously)
> just behind that of the United Kingdom... so currently, here, down under, I
> highly doubt we, as SMSC clients, have direct access to MSISDN porting
> information, either via SS7 or similar. I've heard rumours that location
> information may be provided soon... but there are also legislative /
> privacy issues.

But's that's the whole point, try getting an SS7 connection to a mobile
operator in the UK (well at least to do more than voice).

Steve

-- 
NetTek Ltd Phone/Fax +44-(0)20 7483 2455
SMS steve-pager (at) gbnet.net [body] gpg 1024D/468952DB 2001-09-19



Re: [RFC] Number portability hooks

2003-08-14 Thread Stipe Tolj
> An HTTP 'callback' sounds good as an initial implementation. Generic and
> flexible.

yep. I'm also in a favor of this. Where API should be very simplified
like:

earerbox calls http://www.foob.com/?msisdn= and that HTTP
server replies with either an smsc-id as body/header(?!) or nothing
(indicating he doesn't know where to route).

The question is would we do some kind of internal caching for this?
This would speed up things drastically. Maybe using a *huge* Dict
hash?

Has anyone used huge Dict hashs?

Stipe

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Re: [RFC] Number portability hooks

2003-08-14 Thread Benjamin Lee
Hi all,

On Monday, 2003-08-11 at 08:20:38 PM, Stipe Tolj scribbled:
*snip*
> 
> A first scratch may be an simple HTTP lookup to an "resolving server"
> which then answers with a given smsc-id we simply inject to the Msg
> struct and then route via this smsc-id.
> 
> Any ideas and comments please?!

An HTTP 'callback' sounds good as an initial implementation. Generic and
flexible.

Just my two cents.

-- 
Benjamin Lee
Melbourne, Australia "Always real."http://www.realthought.net/

__
"I went into a general store, and they wouldn't sell me anything specific".
-- Steven Wright



Re: [RFC] Number portability hooks

2003-08-14 Thread Stipe Tolj
Paul Keogh wrote:
> 
> My experience is that some operators indicate this through either
> additional proprietary SMPP error codes or through overloading existing
> ones.
> 
> I would hazard a guess that not many operators will expose an interface
> allowing you to query NP status. I think they are more likely to indicate NP
> through in-protocol (eg. SMPP, MM7 etc) errors. Just MHO of course.
> 
> Does anyone know of any operator or 3rd party that provides NP status as
> a service ?

now, in Germany we have an access to an "centralized" database which
holds all ported numbers. So actually if you want to route messages to
Operator SMSCs, you must resolve the MSISDN at that database to know
if it has been ported to an other operator and hence route it to the
"new" one instead of the prefix home.

Stipe

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Re: [RFC] Number portability hooks

2003-08-14 Thread Andreas Fink
On Montag, August 11, 2003, at 12:51  Uhr, Stipe Tolj wrote:

An HTTP 'callback' sounds good as an initial implementation. Generic 
and
flexible.
yep. I'm also in a favor of this. Where API should be very simplified
like:
earerbox calls http://www.foob.com/?msisdn= and that HTTP
server replies with either an smsc-id as body/header(?!) or nothing
(indicating he doesn't know where to route).
The question is would we do some kind of internal caching for this?
This would speed up things drastically. Maybe using a *huge* Dict
hash?


why huge? entries in this list should not be kept too long.
an alternate way of API would be to use a MySQL DB directly as 
secondary solution.
But this brings us to a routing issue in general.

Andreas Fink
Global Networks Switzerland AG
--
Tel: +41-61-333  Fax: +41-61-334   Mobile: +41-79-2457333
Global Networks, Inc. Clarastrasse 3, 4058 Basel, Switzerland
Web: http://www.global-networks.ch/  [EMAIL PROTECTED]
--



Re: [RFC] Number portability hooks

2003-08-14 Thread Benjamin Lee
Just to clarify to all... I meant that it's probably the same here in
Australia... as we tend to lag a little behind the United Kingdom... I
apologise if my previous email did not read this way... I wasn't contesting
anything, just confirming.

On Monday, 2003-08-11 at 11:07:47 PM, Benjamin Lee scribbled:
> For what it's worth, 
> 
> I believe the "maturity" of the Australian mobile network is (continuously)
> just behind that of the United Kingdom... so currently, here, down under, I
> highly doubt we, as SMSC clients, have direct access to MSISDN porting
> information, either via SS7 or similar. I've heard rumours that location
> information may be provided soon... but there are also legislative /
> privacy issues.
> 
> The arrangement in Germany sounds pretty sweet, though.
> 
> On Monday, 2003-08-11 at 10:49:06 PM, Steve Kennedy scribbled:
> > On Mon, Aug 11, 2003 at 12:20:38PM +0200, Stipe Tolj wrote:
> > 
> > > as many countries deploy MSISDN number portability in their GSM
> > > networks, which means you as a end-customer can take your MSISDN to an
> > > other operator when you switch, makes things a bit more complicated on
> > > the SMS gateway side.
> > 
> > Unfortunately it's not too easy to get porting info, as it will be
> > stored in the HLR of the operator, and unless you have an SS7 connection
> > to them you'll never know the number's been ported.
> > 
> > i.e. say in UK you have 07775 123456, this is a Vodafone number
> > (allocated in a block by Oftel). If the user ports it, they will put an
> > entry into their HLR which points the number to another network, and
> > they put it in their HLR.
> > 
> > 
> > Maybe now they are opening up location based services, they'll also
> > allow other access to HLR's ???
> > 
> > Steve
> > 
> > -- 
> > NetTek Ltd Phone/Fax +44-(0)20 7483 2455
> > SMS steve-pager (at) gbnet.net [body] gpg 1024D/468952DB 2001-09-19
> 
> -- 
> Benjamin Lee
> Melbourne, Australia "Always real."http://www.realthought.net/
> 
> __
> [Maturity consists in the discovery that] there comes a critical moment
> where everything is reversed, after which the point becomes to understand
> more and more that there is something which cannot be understood.
>   -- S. Kierkegaard

-- 
Benjamin Lee
Melbourne, Australia "Always real."http://www.realthought.net/

__
Chemist who falls in acid is absorbed in work.



Re: [RFC] Number portability hooks

2003-08-14 Thread Steve Kennedy
On Mon, Aug 11, 2003 at 04:42:45PM +0100, Alex Kinch wrote:

> I've been following this thread with interest.
> We're planning to collect information on a user's mobile operator via our
> soon-to-be-launched reverse billing operation. We also operate a bulk SMS
> and business messaging site, so this sort of information would be useful for
> least cost routing. I appreciate it'd take a rather long time to build up a
> profile of even a small chunk of UK mobile users, but it's a start.
> I haven't looked into the legal / data protection implications, but could a
> few of us get together to put information into a central database?

As someone pointed out, this may well not be possible in UK due to Data
Protection Act concerns (if not EU privacy concerns).

Lots of stuff that was protected by operators/telcos is now not so in
the UK at least as Telecomms licenses were scrapped in UK on July 24th,
however various bits are still pretty vague as to what replaces them and
what can and cant be passed on etc. in terms of SS7 type services.


Steve

-- 
NetTek Ltd Phone/Fax +44-(0)20 7483 2455
SMS steve-pager (at) gbnet.net [body] gpg 1024D/468952DB 2001-09-19



Re: [RFC] Number portability hooks

2003-08-14 Thread Nisan Bloch
Hi
At 12:20 PM 8/11/03 +0200, you wrote:
Main question is: How much of the specific implementations do we want
to add to Kannel?
Ideally this would look like the SMSCConn abstraction layer itself for
the resolving of the network.
A first scratch may be an simple HTTP lookup to an "resolving server"
which then answers with a given smsc-id we simply inject to the Msg
struct and then route via this smsc-id.
Any ideas and comments please?!
I would rather be able to ask Kannel about an MSISDN - simply routing it to 
another smsc-id can have disasterous effects esp. with respect to charging. 
Eg say a user wants to restrict the charge to X creds in Country Y. Now via 
one SMSC we can get to telco A in Country Y and via another SMSC telco B - 
but with different costs - eg O2 and Vodaphone in the UK. If bearerbox 
simply rewrites at this point all apps doing intelligent routing pre SMSbox 
will get things totally wrong.

I would prefer to see some sort of lookup interface.. Something like a 
"HLR" box.

Of more importance is how to implement the lookup and when (as this will 
incur a msg cost)? Use some third party? Do some SS7 integration? Booktrout 
have some nice APIs with their SS7 cards.

Also of course if we keep the numbers in a hash table, when does one refresh?

Nisan

Stipe

[EMAIL PROTECTED]
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Vogelsanger Weg 80
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Tel: +49-211-74845-0
Fax: +49-211-74845-299
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Re: [RFC] Number portability hooks

2003-08-14 Thread Steve Kennedy
On Mon, Aug 11, 2003 at 12:20:38PM +0200, Stipe Tolj wrote:

> as many countries deploy MSISDN number portability in their GSM
> networks, which means you as a end-customer can take your MSISDN to an
> other operator when you switch, makes things a bit more complicated on
> the SMS gateway side.

Unfortunately it's not too easy to get porting info, as it will be
stored in the HLR of the operator, and unless you have an SS7 connection
to them you'll never know the number's been ported.

i.e. say in UK you have 07775 123456, this is a Vodafone number
(allocated in a block by Oftel). If the user ports it, they will put an
entry into their HLR which points the number to another network, and
they put it in their HLR.


Maybe now they are opening up location based services, they'll also
allow other access to HLR's ???

Steve

-- 
NetTek Ltd Phone/Fax +44-(0)20 7483 2455
SMS steve-pager (at) gbnet.net [body] gpg 1024D/468952DB 2001-09-19



Re: [RFC] Number portability hooks

2003-08-14 Thread Steve Kennedy
On Mon, Aug 11, 2003 at 05:01:50PM +0200, Nisan Bloch wrote:

> I would prefer to see some sort of lookup interface.. Something like a 
> "HLR" box.
> Of more importance is how to implement the lookup and when (as this will 
> incur a msg cost)? Use some third party? Do some SS7 integration? Booktrout 
> have some nice APIs with their SS7 cards.
> Also of course if we keep the numbers in a hash table, when does one 
> refresh?

Od course this begs the question, how does one query an HLR using SS7,
the UK networks are extremely unlikely to allow any 3rd party that
hasn't signed roaming agreements/whatever.

Maybe a nice friendly foreign operator could be persuaded to offer such
a service, and maybe someone would like to sit a box somewhere to allow
3rd party queries ? h ... You'd need to implement MAP/SS7, but hey.


Steve

-- 
NetTek Ltd Phone/Fax +44-(0)20 7483 2455
SMS steve-pager (at) gbnet.net [body] gpg 1024D/468952DB 2001-09-19



RE: [RFC] Number portability hooks

2003-08-14 Thread Paul Keogh
>
> Ideally this would look like the SMSCConn abstraction layer itself for
> the resolving of the network.
>
> A first scratch may be an simple HTTP lookup to an "resolving server"
> which then answers with a given smsc-id we simply inject to the Msg
> struct and then route via this smsc-id.
>
> Any ideas and comments please?!
>

My experience is that some operators indicate this through either
additional proprietary SMPP error codes or through overloading existing
ones.

I would hazard a guess that not many operators will expose an interface
allowing you to query NP status. I think they are more likely to indicate NP
through in-protocol (eg. SMPP, MM7 etc) errors. Just MHO of course.

Does anyone know of any operator or 3rd party that provides NP status as
a service ?





RE: [RFC] Number portability hooks

2003-08-14 Thread Paul Keogh
> now, in Germany we have an access to an "centralized" database which
> holds all ported numbers. So actually if you want to route messages to
> Operator SMSCs, you must resolve the MSISDN at that database to know
> if it has been ported to an other operator and hence route it to the
> "new" one instead of the prefix home.
>

That's impressive - is this something required by the regulatory authorities
or co-operation between the operators ? Is there a cost to access the
service ?

The Irish networks indicate NP through SMPP error codes which are
inconsistent
in both format and content across operators :-(.





Re: [RFC] Number portability hooks

2003-08-14 Thread Alex Kinch
We'd be interested - +1 from me.

Alex

- Original Message - 
From: "Alexei" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Monday, August 11, 2003 4:41 PM
Subject: Re: [RFC] Number portability hooks


> Sounds illegal to me to make this information public.
> But anyone with SS7 access can do lookup and instantly tell the MNC+MCC
> of operator.
> If there's enough interest, we might offer such public service with HTTP
> interface and instant results..
> Just my 2c.
>
> On Mon, 2003-08-11 at 17:42, Alex Kinch wrote:
> > Steve,
> >
> > I've been following this thread with interest.
> >
> > We're planning to collect information on a user's mobile operator via
our
> > soon-to-be-launched reverse billing operation. We also operate a bulk
SMS
> > and business messaging site, so this sort of information would be useful
for
> > least cost routing. I appreciate it'd take a rather long time to build
up a
> > profile of even a small chunk of UK mobile users, but it's a start.
> >
> > I haven't looked into the legal / data protection implications, but
could a
> > few of us get together to put information into a central database?
> >
> > Alex
> >
> > - Original Message - 
> > From: "Steve Kennedy" <[EMAIL PROTECTED]>
> > To: <[EMAIL PROTECTED]>
> > Sent: Monday, August 11, 2003 4:15 PM
> > Subject: Re: [RFC] Number portability hooks
> >
> >
> > > On Mon, Aug 11, 2003 at 05:01:50PM +0200, Nisan Bloch wrote:
> > >
> > > > I would prefer to see some sort of lookup interface.. Something like
a
> > > > "HLR" box.
> > > > Of more importance is how to implement the lookup and when (as this
will
> > > > incur a msg cost)? Use some third party? Do some SS7 integration?
> > Booktrout
> > > > have some nice APIs with their SS7 cards.
> > > > Also of course if we keep the numbers in a hash table, when does one
> > > > refresh?
> > >
> > > Od course this begs the question, how does one query an HLR using SS7,
> > > the UK networks are extremely unlikely to allow any 3rd party that
> > > hasn't signed roaming agreements/whatever.
> > >
> > > Maybe a nice friendly foreign operator could be persuaded to offer
such
> > > a service, and maybe someone would like to sit a box somewhere to
allow
> > > 3rd party queries ? h ... You'd need to implement MAP/SS7, but
hey.
> > >
> > >
> > > Steve
> > >
> > > -- 
> > > NetTek Ltd Phone/Fax +44-(0)20 7483 2455
> > > SMS steve-pager (at) gbnet.net [body] gpg 1024D/468952DB 2001-09-19
> > >
> > >
> > >
> >
> >
>
>
>
>




Re: [RFC] Number portability hooks

2003-08-14 Thread Dave White
> At 12:20 PM 8/11/03 +0200, you wrote:
>
>>
>> Any ideas and comments please?!
>
>
Yeah.

For interactive services, where an app responds to an MO SM with an MT 
SM within a timeframe of at most a few minutes, you can do most NP work 
very simply under certain conditions, namely when all bearerbox 
connections go to the operators directly, and not over a service aggregator.

In this case, the MO will only come from the operator who "owns" the 
handset, i.e. owns the GSM network in which the handset is present. If 
that handset gets ported, the MO will come from the new network's SMSC.

By remembering the smsc-id from whence an MO came, you will almost never 
go wrong sending it back to the same smsc-id for the MT replies. No 
nasty HLR lookups!

It's no good for strongly asynchronous MT-centric services 
(subscriptions, e-mail notifications, etc) but it will work like a charm 
for most other cases.

David WHITE
ONE GmbH
P.S. Sorry Nisan! I pressed "send" there before remembering the 
dev-list's handling of replies. Not enough coffee...




Re: [RFC] Number portability hooks

2003-08-14 Thread Alexei
Sounds illegal to me to make this information public.
But anyone with SS7 access can do lookup and instantly tell the MNC+MCC
of operator.
If there's enough interest, we might offer such public service with HTTP
interface and instant results..
Just my 2c.

On Mon, 2003-08-11 at 17:42, Alex Kinch wrote:
> Steve,
> 
> I've been following this thread with interest.
> 
> We're planning to collect information on a user's mobile operator via our
> soon-to-be-launched reverse billing operation. We also operate a bulk SMS
> and business messaging site, so this sort of information would be useful for
> least cost routing. I appreciate it'd take a rather long time to build up a
> profile of even a small chunk of UK mobile users, but it's a start.
> 
> I haven't looked into the legal / data protection implications, but could a
> few of us get together to put information into a central database?
> 
> Alex
> 
> - Original Message - 
> From: "Steve Kennedy" <[EMAIL PROTECTED]>
> To: <[EMAIL PROTECTED]>
> Sent: Monday, August 11, 2003 4:15 PM
> Subject: Re: [RFC] Number portability hooks
> 
> 
> > On Mon, Aug 11, 2003 at 05:01:50PM +0200, Nisan Bloch wrote:
> >
> > > I would prefer to see some sort of lookup interface.. Something like a
> > > "HLR" box.
> > > Of more importance is how to implement the lookup and when (as this will
> > > incur a msg cost)? Use some third party? Do some SS7 integration?
> Booktrout
> > > have some nice APIs with their SS7 cards.
> > > Also of course if we keep the numbers in a hash table, when does one
> > > refresh?
> >
> > Od course this begs the question, how does one query an HLR using SS7,
> > the UK networks are extremely unlikely to allow any 3rd party that
> > hasn't signed roaming agreements/whatever.
> >
> > Maybe a nice friendly foreign operator could be persuaded to offer such
> > a service, and maybe someone would like to sit a box somewhere to allow
> > 3rd party queries ? h ... You'd need to implement MAP/SS7, but hey.
> >
> >
> > Steve
> >
> > -- 
> > NetTek Ltd Phone/Fax +44-(0)20 7483 2455
> > SMS steve-pager (at) gbnet.net [body] gpg 1024D/468952DB 2001-09-19
> >
> >
> >
> 
> 




Re: [RFC] Number portability hooks

2003-08-14 Thread Steve Kennedy
On Mon, Aug 11, 2003 at 12:51:16PM +0200, Stipe Tolj wrote:

> The question is would we do some kind of internal caching for this?
> This would speed up things drastically. Maybe using a *huge* Dict
> hash?
> Has anyone used huge Dict hashs?

Look at cdb, good for multiple reads, not so good for writes.


Steve

-- 
NetTek Ltd Phone/Fax +44-(0)20 7483 2455
SMS steve-pager (at) gbnet.net [body] gpg 1024D/468952DB 2001-09-19



Re: [RFC] Number portability hooks

2003-08-14 Thread Alex Kinch
Steve,

I've been following this thread with interest.

We're planning to collect information on a user's mobile operator via our
soon-to-be-launched reverse billing operation. We also operate a bulk SMS
and business messaging site, so this sort of information would be useful for
least cost routing. I appreciate it'd take a rather long time to build up a
profile of even a small chunk of UK mobile users, but it's a start.

I haven't looked into the legal / data protection implications, but could a
few of us get together to put information into a central database?

Alex

- Original Message - 
From: "Steve Kennedy" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Monday, August 11, 2003 4:15 PM
Subject: Re: [RFC] Number portability hooks


> On Mon, Aug 11, 2003 at 05:01:50PM +0200, Nisan Bloch wrote:
>
> > I would prefer to see some sort of lookup interface.. Something like a
> > "HLR" box.
> > Of more importance is how to implement the lookup and when (as this will
> > incur a msg cost)? Use some third party? Do some SS7 integration?
Booktrout
> > have some nice APIs with their SS7 cards.
> > Also of course if we keep the numbers in a hash table, when does one
> > refresh?
>
> Od course this begs the question, how does one query an HLR using SS7,
> the UK networks are extremely unlikely to allow any 3rd party that
> hasn't signed roaming agreements/whatever.
>
> Maybe a nice friendly foreign operator could be persuaded to offer such
> a service, and maybe someone would like to sit a box somewhere to allow
> 3rd party queries ? h ... You'd need to implement MAP/SS7, but hey.
>
>
> Steve
>
> -- 
> NetTek Ltd Phone/Fax +44-(0)20 7483 2455
> SMS steve-pager (at) gbnet.net [body] gpg 1024D/468952DB 2001-09-19
>
>
>




Re: [RFC] Number portability hooks

2003-08-14 Thread Nisan Bloch
At 12:51 PM 8/11/03 +0200, Stipe Tolj wrote:

> An HTTP 'callback' sounds good as an initial implementation. Generic and
> flexible.
Has anyone used huge Dict hashs?
Kannel hash is a bit ineffecient for this. We did investigate. One would 
need to change the hashing function, and in fact trie trees or the like 
would be better.

nisan

Stipe

[EMAIL PROTECTED]
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Vogelsanger Weg 80
40470 Düsseldorf
Tel: +49-211-74845-0
Fax: +49-211-74845-299
E-Mail: [EMAIL PROTECTED]
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---
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Re: [RFC] Number portability hooks

2003-08-14 Thread Andreas Fink
On Montag, August 11, 2003, at 05:15  Uhr, Steve Kennedy wrote:

On Mon, Aug 11, 2003 at 05:01:50PM +0200, Nisan Bloch wrote:

I would prefer to see some sort of lookup interface.. Something like a
"HLR" box.
Of more importance is how to implement the lookup and when (as this 
will
incur a msg cost)? Use some third party? Do some SS7 integration? 
Booktrout
have some nice APIs with their SS7 cards.
Also of course if we keep the numbers in a hash table, when does one
refresh?
Od course this begs the question, how does one query an HLR using SS7,
This is pretty simple. you ask the HLR about the location of a user to 
deliver SMS and you will get back its IMSI number which starts with the 
mobile network country code and then the mobile network code.

We're doing it on our SS7 system but so far no one has shown interest 
to use it so we didnt develop this functionality further.



Andreas Fink
Global Networks Switzerland AG
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Tel: +41-61-333  Fax: +41-61-334   Mobile: +41-79-2457333
Global Networks, Inc. Clarastrasse 3, 4058 Basel, Switzerland
Web: http://www.global-networks.ch/  [EMAIL PROTECTED]
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