From: "odc" <matthewf@msexchange2k.closedtest.intra>
To: <matthewf@msexchange2k.closedtest.intra>
Subject: test21_1
Date: Sun, 23 May 2004 19:03:51 +0530
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Internet access on the Nokia 9200 Series Communicator is necessarily =
limited by the speed of the phone's GSM connection. As a consequence, =
testing and debugging Internet-based applications on hardware can be =
both expensive and tedious. The RAS IAP application alleviates this =
problem by enabling you to connect to the Internet over a much faster =
serial connection, via your PCThe application demonstrates how the =
Symbian OS Communications database (CommDb) API may be used to configure =
an Internet Access Point (IAP). To some extent it also shows the common =
paradigm for using most DBMS derived APIs.An Internet Access Point =
defines ISP, modem, charge card and location records that can be used =
together to make an Internet connection. The IAP for the RAS connection =
specifies an ISP and modem record (charge card and location records are =
required for this type of IAP). The CommDb is a standard DBMS database. =
Modems, ISPs, charge cards, locations, IAPs etc are all stored in their =
own tables within the database. There may be a number of records within =
each table (e.g., there may be a number of IAPs, modems, ISPs, etc.). As =
described in the preceding section, each IAP record defines the set of =
ISP, modem, charge card, and location that can be used together. In =
other words, an IAP record defines a set of records the other tables.The =
implication of the above statement is that sets of CommDb records are =
accessed through their associated table. The other implication is that =
you cannot create an IAP record until you have already created the other =
records. Finally, the fact that there may be many records in a table =
implies that each record must be uniquely identified.2. Copy an existing =
CommDb that has a correctly configured IAP. This method "works", but has =
several problems. Firstly, Symbian does not guarantee that the CommDb =
will be binary compatible between releases. In practice this has not =
been an issue, but it is something to keep in mind. Secondly, while you =
are using your RAS IAP, you don't have access to IAPs you configured in =
the "real" CommDb. Finally, and most importantly, CommDb configuration =
should be targeted to the platform; The CommDb that you use for RAS =
connections may well disable some of your other phone services.. Add an =
IAP to your existing (proven) CommDb using RAS IAP. The advantage of =
this method is that you get to retain the CommDb that your manufacturer =
put onto the phone, and therefore can expect the device to continue to =
work with the new IAP! Also, the CommDb API is binary compatible between =
releases, so you can rely on this method as you change phone. It is also =
by far the simplest method! Rather than coding the application from =
first principles, I used the standard Minimal Eikon Application =
Developer (MEAD) and Menu Builder tools to create an application that I =
could easily customize. I then modified the engine to write to the =
CommDb, and the UI to call the engine as appropriate. Each of these =
exports calls non-exported functions to actually implement the creation =
and deletion of the components of the IAP
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<DIV><FONT face=3DArial size=3D2>Internet access on the Nokia 9200 =
Series=20
Communicator is necessarily limited by the speed of the phone's GSM =
connection.=20
As a consequence, testing and debugging Internet-based applications on =
hardware=20
can be both expensive and tedious. The RAS IAP application alleviates =
this=20
problem by enabling you to connect to the Internet over a much faster =
serial=20
connection, via your PCThe application demonstrates how the Symbian OS=20
Communications database (CommDb) API may be used to configure an =
Internet Access=20
Point (IAP). To some extent it also shows the common paradigm for using =
most=20
DBMS derived APIs.An Internet Access Point defines ISP, modem, charge =
card and=20
location records that can be used together to make an Internet =
connection. The=20
IAP for the RAS connection specifies an ISP and modem record (charge =
card and=20
location records are required for this type of IAP). The CommDb is a =
standard=20
DBMS database. Modems, ISPs, charge cards, locations, IAPs etc are all =
stored in=20
their own tables within the database. There may be a number of records =
within=20
each table (e.g., there may be a number of IAPs, modems, ISPs, etc.). As =

described in the preceding section, each IAP record defines the set of =
ISP,=20
modem, charge card, and location that can be used together. In other =
words, an=20
IAP record defines a set of records the other tables.The implication of =
the=20
above statement is that sets of CommDb records are accessed through =
their=20
associated table. The other implication is that you cannot create an IAP =
record=20
until you have already created the other records. Finally, the fact that =
there=20
may be many records in a table implies that each record must be uniquely =

identified.2. Copy an existing CommDb that has a correctly configured =
IAP. This=20
method "works", but has several problems. Firstly, Symbian does not =
guarantee=20
that the CommDb will be binary compatible between releases. In practice =
this has=20
not been an issue, but it is something to keep in mind. Secondly, while =
you are=20
using your RAS IAP, you don't have access to IAPs you configured in the =
"real"=20
CommDb. Finally, and most importantly, CommDb configuration should be =
targeted=20
to the platform; The CommDb that you use for RAS connections may well =
disable=20
some of your other phone services.. Add an IAP to your existing (proven) =
CommDb=20
using RAS IAP. The advantage of this method is that you get to retain =
the CommDb=20
that your manufacturer put onto the phone, and therefore can expect the =
device=20
to continue to work with the new IAP! Also, the CommDb API is binary =
compatible=20
between releases, so you can rely on this method as you change phone. It =
is also=20
by far the simplest method! Rather than coding the application from =
first=20
principles, I used the standard Minimal Eikon Application Developer =
(MEAD) and=20
Menu Builder tools to create an application that I could easily =
customize. I=20
then modified the engine to write to the CommDb, and the UI to call the =
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as appropriate. Each of these exports calls non-exported functions to =
actually=20
implement the creation and deletion of the components of the=20
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Internet access on the Nokia 9200 Series Communicator is necessarily =
limited by the speed of the phone's GSM connection. As a consequence, =
testing and debugging Internet-based applications on hardware can be =
both expensive and tedious. The RAS IAP application alleviates this =
problem by enabling you to connect to the Internet over a much faster =
serial connection, via your PCThe application demonstrates how the =
Symbian OS Communications database (CommDb) API may be used to configure =
an Internet Access Point (IAP). To some extent it also shows the common =
paradigm for using most DBMS derived APIs.An Internet Access Point =
defines ISP, modem, charge card and location records that can be used =
together to make an Internet connection. The IAP for the RAS connection =
specifies an ISP and modem record (charge card and location records are =
required for this type of IAP). The CommDb is a standard DBMS database. =
Modems, ISPs, charge cards, locations, IAPs etc are all stored in their =
own tables within the database. There may be a number of records within =
each table (e.g., there may be a number of IAPs, modems, ISPs, etc.). As =
described in the preceding section, each IAP record defines the set of =
ISP, modem, charge card, and location that can be used together. In =
other words, an IAP record defines a set of records the other tables.The =
implication of the above statement is that sets of CommDb records are =
accessed through their associated table. The other implication is that =
you cannot create an IAP record until you have already created the other =
records. Finally, the fact that there may be many records in a table =
implies that each record must be uniquely identified.2. Copy an existing =
CommDb that has a correctly configured IAP. This method "works", but has =
several problems. Firstly, Symbian does not guarantee that the CommDb =
will be binary compatible between releases. In practice this has not =
been an issue, but it is something to keep in mind. Secondly, while you =
are using your RAS IAP, you don't have access to IAPs you configured in =
the "real" CommDb. Finally, and most importantly, CommDb configuration =
should be targeted to the platform; The CommDb that you use for RAS =
connections may well disable some of your other phone services.. Add an =
IAP to your existing (proven) CommDb using RAS IAP. The advantage of =
this method is that you get to retain the CommDb that your manufacturer =
put onto the phone, and therefore can expect the device to continue to =
work with the new IAP! Also, the CommDb API is binary compatible between =
releases, so you can rely on this method as you change phone. It is also =
by far the simplest method! Rather than coding the application from =
first principles, I used the standard Minimal Eikon Application =
Developer (MEAD) and Menu Builder tools to create an application that I =
could easily customize. I then modified the engine to write to the =
CommDb, and the UI to call the engine as appropriate. Each of these =
exports calls non-exported functions to actually implement the creation =
and deletion of the components of the IAP
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