2000 SP 4 and a new external modem puzzle

[svu]

I've 2 systems 1 in office and 1 at home both windows 2000 professional SP4. Both places i was using internal modem and one fine day i bought a new External Modem D-LINK DFM-560EL. First I tried it on my home system. Everything went perfect. I was happy with the speed and working of the modem. Then next day i took the same modem to office and connected to my pc. The modem got installed perfect. But, now when i dial everything goes fine till "Verifying username and password" and then..... it gives out error 619 - specified port is not connected. Sometimes the error is 721 - Remote computer is not responding. The internal modem is working fine. Anybody got any clue... pls help me.

thanks for your time and attention.

regards,
svu

 

[ImpetusEra]

Check in device manager to make sure nothing is conflicting. Maybe uninstall the driver and try reinstalling it.

 

[svu]

thank you for your attention. I've checked everything possible like u said device confilt and reinstalled the driver atleast 10 times. 5 times from the driver CD and 5 times downloading the driver from the mfg. website. Still the problem remains.

regards,
svu