I can only give you my config:
-Toshiba Satellite Pro 4200 (internal Toshiba modem COM3)
-Win95
-Nokia 6210, with a cable for a DB9 serial port.
First of all, in my case the connector on Nokia 6110 and 6210 are looking the same, but internallythey are different. Are you 100% sure to have the right cable for your 8210? Don't know your phone, but maybe there is something similar as with the 6xxx series.
**The shop where I bought the phone was not aware of this difference**
The cable came with software in my case. That one indicates clearly (in the status bar) if it can find the phone. Do you have something similar? Does it indicate anything?
Have you changed the properties of your dial-up settings, to use COM1? Did youinstall a "Standard Modem" on COM1? Never mind about the internal modem, you don't need to use that, unless you connect to a regular phone. Leave that on COM3. Just install a "Standard Modem" on COM1, in my case it is set to use "57600" as standard speed, and that's the only thing I had to change.
And recently something odd happened, and only doing a thorough scandisk (had some cross-linked files and other rubbish) could make the machine recognise the modem again.
Anything useful for you?
Jim