[General Topics] Menneisyys:
1.5 My wishes…

While the current model is compatible with the majority of desktop Windows-based clients, clients using other operating systems may encounter problems or full inability to access the Net via AKU3 devices because of the…

lack of infrared support in Internet Sharing (as opposed to Modem Link), if the given model doesn’t contain Wireless Modem (or something similar)

lack of USB support on the client side (the case with all non-desktop (mobile) clients (show me a Windows Mobile, Symbian or mobile Linux device with USB host that is also able to use Internet Sharing via USB!) and even Linux or other operating systems on the desktop)

lack of client-side BT PAN support

Therefore, my recommendation for Microsoft is bringing back the DUN profile in addition to keeping the new BT PAN profile. Both have their place under the sun. Use BT PAN with clients that do support it and use the “fallback” DUN with clients that don’t support it or need convenience (see the previous, 1.4 section on the convenience issues on both the client and the phone of the new, PAN-based model).

I also have some other remarks that would make the new approach far more flexible and usable with very little additional coding need. I really hope the excellent folks at Microsoft reimplement DUN in subsequent AKU upgrades and also consider extending the Network Sharing functionality as explained in the following two subsection so that it is able to share any kind of network connections, not only mobile phone-based ones and, at last, offers almost real BT PAN, not only for accessing the Net.

1.5.1 Let’s share any kind of connections, not just mobile phone-based ones!

Internet Sharing could be made MUCH more useful by letting for sharing any kind of connection, not just the ones present in the Connections. Right now, it’s not possible to share for example Wi-Fi connections (a lot of people are asking for Wi-Fi connection sharing all the time; I answer at least one every week). This is a really big problem and could be easily fixed by, for example, just eliminating (or making it optional: if the user only wants to share a given connection and not the current one) the drop-down “Network Connection” menu in the new Internet Sharing applet and just share the current Internet connection, independent of its type.

1.5.2. What do you need to know about the new BT PAN? Can you use it was a REAL Bluetooth PAN network for, say, messaging and playing?

The answer is YES, which is very good news for all MS BT stack users that have long been longing for BT PAN support for its excellent messaging / playing capabilities. Please DO check out my BT PAN-related articles on all these questions; for example, on 4Talk (chat – see this), MS Portrait (chat, file sending) or BT PAN-compatible games (please see the Multiplayer Pocket Game Bible for some examples).

This all means the BT PAN network in AKU3 is a real network as it uses local IP’s (as opposed to DUN) in the network. This means all LAN-based, BT PAN-friendly applications / games work with it as can also be seen in the screenshot I’ve taken with the great multiplayer game Gold Rush (which worked just great over the AKU3 BT PAN – something not possible with pre-AKU3 devices). That is, the basics are already there: it’s just the interface that could be (slightly) modified by Microsoft, of which I’ll elaborate right now.

Unfortunately, the BT PAN support, while it, basically, works, is a bit more limited in AKU3 than in Widcomm-based Pocket PC’s:

You MUST connect to the internet in order to be able to create a BT PAN network between two devices. If you don’t have an Internet connection (or you, for example, supply a connection connecting to a bad APN name), BT PAN won’t work either.

Second, not as important as above, only one client can connect to an AKU3 device, unlike with the Widcomm BT stack, where the number of connecting clients isn’t restricted

AKU3 lacks the BT PAN client mode (so that a AKU3+ device can (also) join BT PAN’s, not (only) host them). This, along with the second bullet, aren’t very important though as can be very easily circumvented (and it’s in very rare cases that you would need a BT PAN network with more than two devices in it – some mass BT PAN multiplayer games like Gold Rush.)

All in all, while the BT PAN, in some respects, does what it’s supposed to (the internet connection sharing does work as expected, except for the convenience and compatibility issues I’ve already elaborated on), the BT PAN support itself could be made independent of “plain” connection sharing. First, making the BT PAN capabilities independent of connection sharing (that is, decouple PAN from Internet Sharing or, at least, make it available for “generic”, non-sharing purposes) would be very nice. The ability to have BT PAN between devices without an actual Internet connection would really enhance the functionality of the BT PAN as there are a LOT of tasks that can be done via local, internet connection-less networks and require no (in cases, non-existing or very expensive) Internet connection. Hope Microsoft also considers this for future AKU versions.

2. Comparison chart

The following chart (only for advanced users / geeks!) compares AKU 3+, pre-AKU3 and Widcomm / Broadcom-based Pocket PC’s (the latter may also have AKU3 – as Bluetooth is not that of Microsoft, with them, the exact AKU version isn’t important) in three areas:

in how they support all (not just plain Internet sharing) the capabilities of BT PAN: can you connect to a given BT PAN server with more than one clients at a time; can you use the given implementation as both a client and a server, is the given BT PAN a “real” PAN network and, finally, is any kind of Internet connection needed for the BT PAN network to work. Note that I’ve already elaborated on all these questions earlier.

dialup-related: how dial-up (accessing the Net from other devices) is done (via DUN or BT PAN); is it possible to use the device as an infrared modem, can you run server-like apps on the client and, finally, is any manual intervention needed for (re)connection (again, in pre-AKU3 times, nope via Bluetooth DUN – this was also a real strength of the DUN-based approach)

internet sharing-related: what protocols work over the sharing (at this, AKU3 really excels as it shares EVERYTHING, as opposed to third-party, non-OS-level solutions used before as is also explained in “Can I share the Internet connection on my Pocket PC through Bluetooth/Wi-Fi? That is, can I make my Internet-connected Pocket PC into some kind of a Wi-Fi/Bluetooth Access Point?”) and the class of collections that can be shared (in this, AKU3’s solution is definitely inferior to “real” ICS, which can share any kind of connection including Wi-Fi, not only mobile phone-based ones.)

If you can’t see the above chart, the chart is here as HTML

3. Verdict

While the new model exhibits some serious compatibility (and, with Bluetooth connections, convenience) problems, I consider it a very good step in the right direction.

I do hope Microsoft reimplements Bluetooth DUN (which isn't at all complicated because it did exist in previous operating system versions - they will only need to insert back the code used in there) and, preferably, infrared connection in the new Internet Sharing program or, at least, forces Pocket PC manufacturers to supply the Wireless Modem program with all their AKU3 ROM upgrades (also on models that, traditionally, didn't have it - for example, the Wizard) / new models so that infrared dial-in still remains possible.

Also, I hope they go on extending the functionality of Bluetooth PAN so that the Microsoft BT stack, at least BT PAN-wise, becomes a decent alternative to the Widcomm BT stack.

4. Other, recommended links

Use your Pocket PC Phone Edition as a modem for your other Pocket PC's! - a full tutorial - (this explains the pre-AKU3 case)

Can I share the Internet connection on my Pocket PC through Bluetooth/Wi-Fi? That is, can I make my Internet-connected Pocket PC into some kind of a Wi-Fi/Bluetooth Access Point? - this article explains how ICS must be done on pre-AKU3 devices.