AT&T Collaborate begins at $17.48 per user per month (when purchased online) for its Basic Voice Solution package, and, far from being old and stodgy, this service competes feature for feature with our newer VoIP contenders. That's a lot of experience in communications, which shows up in no uncertain terms in AT&T's Collaborate, the company's business Voice-over-IP (VoIP) service.

It's also the AT&T that runs metropolitan and regional phone service in many US cities and towns, and even provides cable TV and internet service in some places.

This AT&T is one of the Big 3 wireless carriers. Today's AT&T isn't the Ma Bell of the last century but it's one of her offspring. Definitely requires IT pro on staff, might require outside consulting help to configure.How to Set Up Two-Factor Authentication.How to Record the Screen on Your Windows PC or Mac.

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