PRW.NET FAQ's : Dialup and Modems :
Why am I getting disconnected after a short period of time ?
1. Your modem has some incompatibility with the V.90 protocol. This protocol is dynamic so it renegotiates the baud rate periodically according to the level of noise or static in the line. If your modem has an older V.90 implementation it may not respond correctly to the baud rate renegotiation so it will disconnect when it changes. You can check on www.56k.com or www.windrivers.com to see if you are using the latest driver/firmware for your modem manufacturer. If you plan to use the Internet for extended periods of time, we suggest using a high quality modem like the US Robotics V.90 Faxmodem (not the Winmodem). They generally produce the best connect rates and follow the V.90 standard very closely. Many modems bundled with PC configurations (particularly generic PCs) are not really suitable for active Internet users (in some cases the manufacturer doesn't even have a web site for support).
2. Your phone line has a high level of noise. You can report this to PRTC and request that a technician certify the line for high speed data transmission. The equipment used by many phone company technicians is only capable of testing 14.4 or 19.2 Kbps capabilities so you need to insist that the line requirements are those of a 56 kbps connection.
You can also get additional suggestions for improvement indicating your symptoms and modem type at:
| http://modemsite.com/56k/tshoot.htm |
Why does my 56 K modem connect at less than 56 Kbps ?