I posted this here in the Lounge vs anywhere else because I want as much real-life anecdotes as possible. Some quality technical information would also be useful. I'm the "computer guy" and my client is asking me to tell her whether or not I think she should switch her telephone service provider from the standard, hard-wired AT&T phone service to the VOIP phone service of AT&T U-verse. And I guess that's my 1st question, which is whether or not the Uverse phone service is any different than any other VOIP. I've talked to the mouth-breathing idiots at AT&T, even their "smart" Technical Support person, but none of them can answer the question, and this whole question hinges on the reliability of the service. It's a Doctor's office, and they cannot have their 4 phone lines go down, not even for 5 minutes, ever. Reliability is 1st and foremost. In the last 6+ years paying AT&T for their hard-line (copper wire) connection, they have not had the phones go down once. If I recommend that they change, and the phones go down at all, I'm going to look real bad. These are medical people, not computer techs or bona-fide business people. They are Doctors acting in the role of business people and have had to learn several business lessons the hard way. I do not think they fully-appreciate the consequences of moving to an unreliable phone service and what kind of long-term and "other" consequences there might be if they switch, sign a contract and then discover it's unreliable. The impetus for the move was provoked by 3 factors; 1) A phone call from U-verse offering the service, 2) the end of the Time Warner cable TV and internet package and the fact that they will have to start paying an extra $200 a month for being "out of contract" and paying "month to month" and 3) the fact that if they bundle the phone, internet and cable into a single package from Uverse they could save over $600 a month. This business has been around for years, and will continue to remain so, so we are talking 10's of thousands of dollars here over the long term. Conversely, they've also demonstrated a willingness to put up with chronic difficulties and inconveniences over the long term, adopting expedient and "work around" solutions when what they should do is replace what is barely working with something new, expensive and fully-functional. I do not want to be the guy that they think about every time they are regretful for having made the change that I recommended. However, I WOULD like to be the guy that recommends a course of action that saves them 10's of thousands of dollars over the long-term. My perception of VOIP in general, and U-verse in particular, is that the phone connection is dependent upon the functionality of the modem and the cable that connects to it. The phone service is only as dependable as the internet service, and my 1st-hand experience with U-verse from several years ago is that the reliability of those modems is crap. It went down constantly, and we had on-site techs in the house about once every 3 months. I'm sure it's improved since then, but (assuming I'm correct that the phone service is dependent on the modem's reliability) has U-verse's reliability improved to the point that their phone service is ready to service business-class customers? And note, this is a Doctor's office and not a business that is less dependent on their phones. A self-storage container place might be inconvenienced, but failing to maintain lines of communication between patient and doctor could be a matter of life & death. Worse, they could lose money. That's a full description of my problem. Any help appreciated, and thanks in advance.