Re: How to conect handheld device(mob.tlf.) with the gateway


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Posted by Tore Storødegård on August 16, 1999 at 20:26:44:

In Reply to: How to conect handheld device(mob.tlf.) with the gateway posted by Tore Fuglerud on August 15, 1999 at 17:42:38:

: Hi
: I'm completly new to both mobile tlf. tecnology and to WAP.
: so, how to conect handheld device(mob.tlf.)
: with the gateway, do I use tlf.nr, url or..??
: What do I need on the server/gateway side to be able to recive
: the messages, must I conect som kind of antenna or what??
: Pleace fill me in with te-spoon

Hello Tore

I'll try my best to explain how wap works

First of all, WAP is made to be as similar to the internet architecture as possible.
All content that you access from your wap browser is stored on a web server.
The content on the server is addressed using a url, e.g http://www.mobic.com/index.wml (does not exist, yet)
Normally, a wap phone will be preset to load a standard page, the same way as an internet browser
Initially I believe that the operator wap home page will be the default start page
The startpage will then point to other services, using url's to address other services (on the same or another server)
If you want to access other services, you will be able to choose another url.
I suppose all wap phones will enable the user to manually input url's
Entering a url from a phone is not easy, and I believe that most wap service providers will let you use the internet to personalise your services
The result of the personalisation will then be available as a list of services on your phone
When you use the service on the phone, you will not see the url's, only the service names and hierarchy

To access wap services, you will use some communication to the wap gateway
Wap supports many carrier technologies, among them are SMS and GSM data (and similar carriers for other wireless networks)
If SMS is used, the browser will compress your request using WAP compression techniques.
The request is then sent to the gateway, which translates the request to a standard http request, and send it to the web server using the url
The response is sent back to the gateway, which encode the content using SMS, and send it back to the WAP phone, which displays the result
If GSM data is used, a connection is established before the dialog between the client and gateway/server is started.
On the terminal side of the gateway, wap protocols are used
On the internet side of the gateway, standard internet protocols are used
The data connection is set up automatically as a result of the request from the user. There will normally not be any manual setup. But, different terminals will handle this different.
For GSM, there will be a packet network called GPRS coming into operation next year
GPRS will be perfect for WAP, with GPRS you do not need to set up a connection, packets will be sent and received whenever needed.

I hope this explanation answers some of your questions.

I have added a link to a short system description of wap

Regards

Tore

: Many regards
: Tore




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