I'm trying unsuccessfully to setup a windows XP Pro machine to accept incoming dial up connections.
I have created an "Incoming connections" using DUN control panel and the PC accepts the connection fine, however when negotiating I get an "Error 678". The user being used is an administrator account with a secure password (usual 2k3 AD constraints)
I am trying to connect from a windows 7 laptop and I will be testing another Windows XP laptop later today.
Dialing the inbound number from a standard phone gives the usual modem negotiation tones.
Dialing an number FROM this modem works and also gets the usual negotiation sounds.
Dialing human phone from the laptop attempting to connect also succeeds and gets the usual negotiation tones.
It's unfortunately a pretty critical part of our multi-million dollar manufacturing equpment at the moment.
Windows 7 dial up networking diagnosis report can be emailed on request, its a cab file and EE won't let me upload that.
The modem installed in that PC is a new Netcomm InModem 56K V.92 (IN5699) modem and the laptop in use is built in, but also brand new.
On the host machine I have tried "netsh winsock reset" and rebooted. I can still dial out and the phone line is an analogue one so it shouldn't have anything to do with our PABX.