Why does Skype get so much hype? Sure, this software lets you make free "phone calls," computer to computer, anywhere in the world. But it wasn't the first such program, it's not the most ...

When the call is free as with Skype, or cheap with Vonage, callers may accept slightly less call quality. But call center callers and agents need better quality. Calls using public VoIP services have ...

Session Initiation Protocol is used widely for the setup, teardown and management of VoIP calls. Much of its functionality is related to the setup of calls, as its name implies. Part of this setup ...