Dell Modem-On-Hold

This software is pre-installed on all Dell PCs equipped with an on-board modem. It features Modem-on-hold (MOH), a function of V.92 modems that enables users with dial-up connections to seamlessly switch to an incoming voice call when a call waiting signal is detected while connected to the Internet, and then resume using the Internet after the voice call is terminated without requiring redialing and a new handshake. To utilize the MOH functionality, users must have call waiting service provided by their telephone service provider. Additionally, in order to have caller ID function while on the Internet, users must subscribe to caller ID on call waiting service from the telephone company, rather than just ordinary caller ID. MOH also allows users to initiate a voice phone call while connected to the Internet. The MOH program suspends the data connection between the modem and a dial tone appears on the telephone handset. Once the call is complete, the modem returns to the Internet connection. There is a hold time in which the user must end the voice call in order to prevent the Internet connection from being dropped, and this time is set by the Internet service provider (ISP) anywhere from 10 seconds to infinite. The MOH application typically displays on the user's screen both the allotted hold time and a countdown showing how much time is left for the phone conversation.