MODEM DISCONNECTS? Disabling 56k or reducing speed often helps:
Disconnections What causes modem to disconnect? (26-Apr-03)
Disabling 56K AT Commands (extra settings) for protocol selection (Updated 13-Sep-03)
Limiting CONNECT speed: Automatically reject low-speed connections and re-dial to get the speed you want. Also to limit max connect speed. (Updated 1-Dec-03)
56k Troubleshooting(Updated 7-Jan-05) Suggested troubleshooting procedure if you don't get 56k connects - 4 pages. Handshakes - Audio of modem handshakes Access Numbers - Modem #s to use with testing
Other problems:
115.2k CONNECT What to do if you get a CONNECT 38.4, 57.6, or 115.2k (Updated 27-Jul-03)
Auto-Answer Trouble with modem answering calls? (Updated 17-Mar-04)
Blacklisting Modem fails to re-dial busy number in some countries (Updated 14-Mar-03)
Call Waiting If you want to get bumped with call waiting (Updated 28-Dec-02)