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Treo 650 WiFi Light with Reverse BT DUN

We may not (yet) have WiFi enabled on our Treo but there is another way to experience the joys of free wireless connectivity thanks to Reverse BT DUN.

Whereas the standard BT DUN (Bluetooth Dial-Up Networking) enables your PC to be online via the data connection on your Treo, Reverse BT DUN enables your Treo to be online via your PC’s broadband connection – thus the ‘reverse’ name.

Evidently, Reverse BT DUN is primarily intended for home and office use and cannot be accessed while on the go.

Full installation of Reverse BT DUN requires a number of settings on your PC, Treo and most likely also your router if you’re using one.

PC Settings
First you’ll need to setup your data connection for Internet Connection Sharing:

  • Go to Start > select and open Control Panel
  • Select and open Network Connections
  • Select the dial-up or broadband connection that you want to share – typically Local Area Connection
  • Right-click Local Area Connection > select Properties > Advanced tab
  • Under Internet Connection Sharing select “Allow other network users to connect through this computer’s Internet connection”
  • Click OK and your Local Area Connection should now say ‘Shared’ in Status

Router Settings
Please note that if after clicking OK you get and an error message saying "An error occurred while Internet Connection Sharing was being enabled. Internet Connection Sharing cannot be enabled. A LAN connection is already configured with the IP address that is required for automatic IP addressing.” you will need to change the Default Gateway on the router to (for example).  This is because your PC needs the which is typically set as default on your router.

I can’t provide you with exact instructions or settings for how to change the Default Gateway on your router but I do recommend that you check before making any changes.  In my case it took 45 minutes with Netgear’s fantastic customer support team to help me set this after I managed to loose all Internet connectivity.  I can tell you that it required running ipconfig /release and /renew commands but that’s about it.

Bluetooth Settings
Next you’ll need to setup Bluetooth for LAN Access and Personal Area Networking Service (I am assuming that your PC is already BT enabled and that you have already paired your Treo with it).  Depending on which Bluetooth adapter you’re using you’ll either go to Control Panel > Bluetooth or open the separate BT application installed to control the adapter.  In my case with the Lanso USB BT adapter, I had to:

  • Go to ‘My Services’ > Properties
  • Open ‘Personal Area Networking’ tab
  • Select ‘Auto-start this service’
  • Select ‘Work Mode’ > Set up Bluetooth Personal Area Network and Enable DHCP Server
  • Go to ‘Lan Access’ tab
  • Select ‘Auto-start this service’
  • Click Apply and OK then exit and restart your Bluetooth application

Treo Settings

  • Open the Prefs application
  • Select ‘Connection’ (Under ‘Other’ at the bottom)
  • You will see a number of ‘Available Connections’ and under this click ‘New’ then:
    • Name: change from ‘Custom’ to whatever you’d like (I chose Treonauts)
    • Connect to: [Local Network]
    • Via: [Bluetooth]
    • Device: [Tap to Find and select your PC]
  • Click OK then Done

Treo650reversebtdun01b Treo650reversebtdun02b Treo650reversebtdun03b

  • Select Network (Under ‘Communication’)
  • Open Menu > Service > select New
    • Service: name your service as you like
    • Connection: select the connection that you previously created
    • User Name + Password: leave blank
  • Select ‘Details’ at the bottom
    • Fallback: None
    • Idle timeout: Never
  • Select ‘Advanced’
    • Deselect ‘IP Address’ and ‘Query DNS’ and enter a fixed IP address and Primary DNS (this is required for Blazer and Xiino to work properly)
  • Press OK then Connect at bottom right.  If prompted, select ‘Yes’ when asked if you want your Treo to ‘Connect to the Internet’.

Treo650reversebtdun04b_1 Treo650reversebtdun05b Treo650reversebtdun06b

With all of these settings finally completed you should now happily be surfing the web or using other data applications on your Treo via your PC’s broadband connection.  For example, I’ve been very happily listening to streamed Shoutcast stations using Pocket Tunes Deluxe and my Reverse BT DUN connection.  I also wanted to test a VoIP solution but haven’t yet found one for our Treo (any tips?) and I’m still looking for other things that I might be able to do now. 

Also, please note that you’ll need to go back to Prefs > Network then select your normal carrier ‘Service’ to use your data connection again once you’re outside home or the office when you’re not connecting via Reverse BT DUN.

It certainly wasn’t the easiest thing to set up and it took me a couple of hours to get everything working but now that I have Reverse BT DUN enabled I am certainly enjoying my newfound free connectivity – I’ll call it Wifi Light.

Reverse DUN works!!! [Treocentral Forum]
Using reverse BT DUN w/ Treo 650 [PalmAddict]
Palm Bluetooth Guide [PalmZone]
Streaming Audio on your Treo with Pocket Tunes Deluxe 3.0 [Treonauts]

Treonauts want even more connectivity freedom

Posted by Andrew on July 29, 2005 at 11:56 AM

Treo 650 Tips , Treo Software | Bluetooth

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» Treo 650 and Reverse Bluetouth DUN from peerfear
Treonauts talks about reverse bluetooth dial up networking Whereas the standard BT DUN (Bluetooth Dial-Up Networking) enables your PC to be online via the data connection on your Treo, Reverse BT DUN enables your Treo to be online via [Read More]

Tracked on Jul 30, 2005 12:27:03 AM

» Treo 650 and Reverse Bluetouth DUN from peerfear
Treonauts talks about reverse bluetooth dial up networking Whereas the standard BT DUN (Bluetooth Dial-Up Networking) enables your PC to be online via the data connection on your Treo, Reverse BT DUN enables your Treo to be online via [Read More]

Tracked on Jul 30, 2005 12:27:51 AM


by Slithy | Jul 29, 2005 12:10:48 PM

Another way to do this is using Softick PPP. Some wireless DSL gateways cause IP address conflicts that keep you from using normal methods for Internet Connection Sharing. Softick gets around those problems.

by Bryan Larsen | Jul 29, 2005 3:06:51 PM

Note that if you have a Macintosh and Missing Sync, this is really easy to do. Click on "Help" "Internet Sharing Assistant".

by Mike Woods | Jul 29, 2005 7:23:12 PM

In the "Details" screen, you can select your carrier's connection and whenever your BT connection is not available, the Treo will "fallback" to the carrier connection.

Works like a charm!

by David Wilson | Jul 29, 2005 8:53:33 PM

Is this possible on a Mac (OS 10.4.2) without Missing Sync. I am aware of how to share my PowerBook's internet connection with Airport (802.11), ethernet and internal modem, but couldn't determine how to share using bluetooth.

by Seth | Jul 29, 2005 11:52:58 PM

this is kind of ridiculous. if you have your laptop that has internet connection, why thether your treo and surf on the treo?

by David Wilson | Jul 30, 2005 9:13:14 AM

"...why tether your treo and surf on the treo?"

1. Geeky, cool factor

2. Because you can, at least some of us, so far

3. I will allow your wife/husband/girlfriend/boyfriend/partner one more opportunity to roll their eyes at you

4. Repeat from the top

by David Wilson | Jul 30, 2005 9:14:37 AM

Whoops, Typo!

Reason #3 should be "It will allow your wife/husband/girlfriend/boyfriend/partner one more opportunity to roll their eyes at you."

by Allan | Jul 31, 2005 5:05:46 AM

Reason #5: (The "Killer app" for me) Versamail will only sync with an Exchange server over a network, not by Hotsync. So if you want to get large attachments onto your Treo without paying £10/meg for GPRS bandwidth, this is pretty much your only choice.

by Afaebe | Aug 1, 2005 4:55:23 AM

Why go thru this hassle of LAN and reverse DUN for so called "wifi"? If it isn't wifi, then it's not it. If you cant use a hot spot when you're near one, then its not wifi compliant. I think treonauts should learn to impress and wait on Palm to fully develop the 650 ROM thro updates. Palm could patch wifi on the ROM if its necessary. Or better still include wimax amongst other things in the next treo.

by Andrew King | Aug 3, 2005 4:20:57 PM

I disagree with you Allan. The thing you are missing is that you COULD use WIFI over BlueTooth. Theoretically - if you had a laptop or PC with WIFI and BlueTooth capability, you could use your Treo to attach to the wifi network via bluetooth through your laptop or PC.

Why this is cool - is not because you ~can~ bring your laptop and use it as a wifi gateway for your Treo at StarBucks. The reason this is cool is because SOMEONE can create (please do) a small bluetooth wifi adapter for us. Something that can fit in your pocket.

We can now stop whining about the SDIO WIFI card that would suck our Treo's battery dry - and start focusing on something even better.

Technically, bluetooth is supposed to be the equivalent of USB for handheld devices. That being the case, a WIFI adapter which connects to your Treo via bluetooth would be a perfect such accessory!

And - it would not tie up my SDIO slot!

Good prototype Treonauts! I want to see it now in a device that fits in my pocket (2 inches long, half inch wide, 1/8th inch thick with rounded corners).

by Cletus Van Damme | Aug 17, 2005 11:00:43 PM

Whats wrong with the 2 inch long object in your pocket right now?

by Ed Perez | Nov 27, 2005 12:41:40 PM

I'm just wondering if you think it is possible to use a similar method mentioned above with a Bluetooth Modem such as the Socket Cordless 56K Modem with Bluetooth Wireless Technology. This modem is compatible with Palm 5.2 and up.


Because if it could be done, it means that you can wirelessly connect your Treo 650 to the internet directly through a phone line (landline) via a dialup networking (DUN). This is a cheaper method to browse, especially if you are near or have access to a telephone line, and without a notebook or PC.

by Michael Carleton | Dec 7, 2005 9:54:14 AM

Other than the "roll thier eyes" factor,
the other reason to do this is so you
can serf the web on the Treo while your
4 year old plays a game on the notebook.
My kids think they own the notebook whenever
it is powered on.

by Mike M | Dec 30, 2005 2:21:04 PM

I have a Treo 650 and a Dell Axim 30. The Axim has both bluetooth and wifi. I can use the standard DUN on the Treo to provide internet access to the axim when I can get a cell signal, but that's kinda useless because I don't really use the Axim for much. What I'd really like to do is use the Axim to provide DUN to the Treo via bluetooth with the external connection being wifi because the building I work in is so large that there a lot of dead cell spots, yet the entire building is covered by wifi. The Axim is small enough to put in a pocket and forget unlike a laptop, and if I was going to carry a laptop around, I'd just use that anyways. I know this is a palm forum, but has anyone seen software to allow a pocket pc to provide DUN to the treo??


by Robert Mastracci | Jan 24, 2006 11:02:31 AM

I have a Treo 650 from Verizon. The setting under prefs > Communications > network > service is locked by the provider. Is there a way around this?

by Geraldo Dezena | Feb 2, 2006 10:11:12 PM

I have wi-fi d-link wireless router in my home. How connetion my treo 650 by my wireless network?

by Derrick Mantie | Mar 5, 2006 5:57:43 PM

I have a 650 from verizon and a generic BT adapter using bluesoleil. I get "ERROR: Incomplete setup. Please check
your network settings" when I try to connect.
Any ideas?

by David | Mar 22, 2006 1:50:38 PM

I can't get this to work with my Verizon treo 650.

It seems like the PAN BT profile is not available.

Is this possible with this model?

by Jan Sladky | Mar 27, 2006 9:49:38 AM

Hi guys,
have you anybody of you got the same problem like me ?

I'm using MSI BToe MS-6970 with driver BTdongle_0331 for XP SP2.

Treo 650 and MSI BT are paired, BUT if I want to join the Treo to the LAN (via option "Join a Personal Area Network" from BT icon in systray), Windows can not find it !

I've tried it also with Dial-up networking ON, but result is the same, only dial-up service is visible in BT->Device->Properties->Services

With QTEC MDAIII I CAN DO IT, so what's going on with Treo ??

any help really appreciated


by Rocky Rosales | Apr 20, 2006 8:09:47 PM

I tried this but get a PP timeout error on my Sprint treo 650. Any help?

by Gerard | Aug 2, 2006 8:40:51 AM

When I am online or moving between web pages I get a data time out message stating that the "page downloaded could not be completed." I have tried changing the proxy server only to have it work for a couple minutes. Could anyone assist me with this problem.

by Daniel | Sep 5, 2006 3:40:30 AM

I have a Treo 650 from Verizon. The setting under prefs > Communications > network > service is locked by the provider. Is there a way around this?

Go to the top and click service, then new..

by ryan | Sep 28, 2006 9:55:32 PM

how can I use my samsung a940 as the gateway to get my treo online? I killed the service for my treo and still want to use it to get online via bt and my samsung.

by afalak | Nov 12, 2006 2:30:01 PM

still cant get it working on my 650 and x-micro dongle. the treo connects to the bluetooth network on my hp laptop and then disconnects. the treo says signing on and is stuck there until it says GPRS connection not available. wasted 2 days, still nothing ...

i have a router and have done that part fine. just that am not sure when the PC says that bluetooth network access connection success , why does treo still keep "signing on". do I have to do something else ?

the bluetooth lan as IP and no gateway. Its shares internet with the wifi connection I have which is at network so there is no conflict....

but still doesnt work ...

by Murthy | Nov 20, 2006 3:27:46 PM

Hai Guys,
Iam using Treo 650 GSM/GPRS smartphone. I bought it from US. Now iam using it in India. It is compatible for WAP services?
Plz send the solution if anyone knows to my email address.

The comments to this entry are closed.

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