AT&T Corp. and WorldCom Inc. last week separately introduced services designed to help customers cut costs and simplify their networks by running voice traffic over new or existing IP and frame relay ...

Forget free long-distance. Users will only sign up with voice-over-IP service providers if they also offer IP-enabled voice applications such as speech recognition, unified messaging and conference ...

NTL Telewest is developing a voice-over-IP residential telephone service and has appointed telecoms giant Ericsson to help roll it out. A five year agreement has been signed between the two parties.