AT&T VoIP Review and Ratings
Consumer AT&T Reviews at WhichVoIP.com

Reviewers Comments:

Had this installed in my office (business) in August. AT&T was supposed to have NCR do installation, they NEVER SHOWED UP! The T1 line failed after heavy rains due to old infrastructure - - - repair person said they had dried out the trunk line at the same spot just 12 months earlier, indicated the immediate lines and boxes were ancient and in desperate need of upgrade. Service crashed again about 45 days later, my business was without phone service for two days - - - first day was when it rained, the second day was 45 days later when equipment installed in my office crashed. I had to escallate this to the highest level of management at AT&T. Sound quality waivered and required AT&T to "tweek" settings with little to no improvement. The final straw was today (7 months from install) when a network failure caused crash of all 8 phone lines in to my office! On top of all of this AT&T fouled up the billing and it took months to get that straight. My opinion is to stay as far away from AT&T voip as possible. It appears they rushed the product to market and it has proven to be completely unreliable form the start. On top of it AT&T service has been bad - - - until I escalated the problem to the highest level of management did I get any kind of help or service. I am attempting to get out of my 3 YEAR contract and moving to another phone provider with regular, RELIABLE phone service form a company that appreciates it's customers. This has been a disaster for my business!

Reviewers Comments:

Reviewers Comments:

Have had this for only 2 weeks. I get a lot of clicking in the evening. last night my caller had to call me 4 times before she could hear me. AT&T doesn't know what the problem is, they just have you check your speed. When it works the voice quality is loud and clear on my end, by people calling me say my voice keeps breaking up. On my 2nd modem with them, same results.

Reviewers Comments:

I have been a Callvantage customer for years. Yesterday, I had a few calls from NRK in Norway. I had the Callvantage system set to ring both cell phones and the TA, with 2, 2-line handsets connected. Nothing rang. Alf had reached my voice mailbox 3 times. I had to make 3 more international calls, because the first 2 calls were dropped. All the calls I make through ATT Callvantage, including those I picked up on the cell phone, have unacceptable time delays. It reminds me of the days of simplex carphones. Alf in Norway, called my cellphone directly, and to the surprise of both of us, the delay was unperceivable. All the equipment was the same, except for the ATT Callvantage routing. Audio quality is quite good, except for the random packet dropout problem, and this varies not only from day to day, but also hour to hour. In the case of the calls to Norway, Alf, an engineer with NRK, reported only be able to hear one out of three syllables. I use PingPlotter Pro software to analyze our internet connections. I set PingPlotter Pro to ping every second, and it indicated that the connection through all nodes was ok, latency was less than 19 ms (worst case) and router flap was virtually non-existent. This left only ATT Callvantage servers in the loop. 2 Years ago, ATT did not bother to tell me that the TA I was using was replaced the previous year, because it could not handle the increased speed of the Comcast cable connection. Instead, they let me call and report dropped calls and voice dropouts for months. It was only after I threatened to discontinue service that I was allowed to speak with someone in a higher service tier. Connection speed is unpredictable. Speech quality is acceptable, but this is offset by voice dropouts. Better foreword error correction is necessary. You would think that service would improve, but keeping the bottom line high appears to be more important than keeping their customers on top. PS It is 5:02 pm est, and I just received another business call that was dropped after 6 minutes. I called my own number, and received my voice mailbox after 2 rings. I will be quitting service soon. You cannot run a business with ATT Callvantage. My six year old might enjoy it, however.

Reviewers Comments:

WARNING!!!!!!!!!!! The shortest wait time for customer service was 15 minutes the longest was 32 minutes. Tried to e-mail for service and after waiting 2 business days the e mail response was to call customer service. If there service works great but if you have any trouble you will need to call in sick at work for a day or two to be able to talk to there service people.