Re: ActiveSync 3.7 / 3.8 unable to dial in remotely via RAS when PC networked
- From: "Rob Borek [MS MVP]" <rborek@xxxxxxxxx>
- Date: Tue, 10 Jan 2006 01:34:32 -0500
On Mon, 9 Jan 2006 23:05:11 -0000, "Pheasant Plucker®"
<pheasant@xxxxxxxxxxx> wrote:
>Hi there,
>
>Following on from a couple of posts a long time ago regarding loss of
>partnership
>using dial-up via RAS on XP I have some information from Microsoft that I
>was not aware of given to me by an MCP;
>
>"In both versions of Windows XP, trying to establish an ActiveSync
>synchronization using RAS will fail if that PC has any type of network
>connection. This includes certain internet connections like cable modems.
>Microsoft told us about this restriction, but they were not able to tell us
>if this was introduced recently to Windows XP. We had not been able to
>reproduce the problem you reported in our test machine. However, that test
>machine was not on our network during our attempts to reproduce the problem.
>After Microsoft explained this limitation to us, we connected the test
>machine to our network and we could no longer perform the synchronization."
ActiveSync generally works just fine with all VPN connections and the
like. Problems can emerge, however, if the VPN or internal network is
using the same IP address space as ActiveSync uses (which is far
enough off the normal IP address ranges to not usually be a problem).
ActiveSync connects via PPP to the device over the USB connection, so
in some ways it acts as though it is a RAS connection itself (though
it does not go through the normal Windows connections). In Windows
Mobile 5, Microsoft switched to using standard TCP/IP over USB, so the
device shows up as a connection (however, this has caused problems
with many firewalls, as the device appears and communicates over
standard TCP/IP ports, which are blocked by the firewall).
Are you still having problems losing your dial-up RAS connection while
using ActiveSync?
--
Rob Borek
Microsoft MVP - Mobile Devices
Want *ONE ON ONE* support? http://www.pocketpcone2one.com
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