Re: WAP over SMS?

Dave White wrote:
> 
> Stipe Tolj wrote:
> 
> > Bruno David Rodrigues wrote:
> >
> >>Is it worth to code it now that new gprs phones don't have wap over sms
> >>option ?
> >>
> >
> > BTW, has anyone ever seems something working with a commercial WAP GW
> > and a real phone?!?!
> >
> 
> Yes, you can, and yes, I have, using Kannel as my G/W.
> 
> Writing a NAT-like service that maps SMS MSISDNs to UDP port numbers is
> easy; once you deal with gathering the concatenated SMS data together to
> form a complete WDP message, you can then send it over the proxy to any
> UDP/IP WAP gateway, and pick up the request. You will also need to make
> sure you cache the "originating port" param from the application port
> addressing UDH IE for when you get the answer and are ready to send the
> SMs to the phone.
> 
> Connectionless WSP is quite easy, and works "out of the box" with
> Kannel. Connection-oriented WSP over such a proxy crashes wapbox, which
> seems to gag on the WTP originating address data.
> 
> As for usefulness -- hmm. I largely used this as a test case for the
> bidirectional concatenation support for my (company's) SMS gateway. If
> you make liberal use of "TP-MMS", you can improve the performance from
> c. 60-90 seconds for a request to c. 10-15 seconds. (Paging operations
> cost a lot in GSM.)
> 
> Newer phones only support USSD, true -- but some of those nasty SMSC
> application protocols (CIMD2 and SMPP come to mind) can be also used
> with some modifications with a "USSD Center" or with a pager network.
> 
> Thus, supporting WAP/SMS actually *does* make some sense -- it will
> reduce the effort needed to do WAP/USSD, or support smart pagers.

sounds like you did this already using portions of Kannel?!

Can you contribute this to the group?

Stipe

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