AT&T Uverse with CallVantage - 2wire and dlink dropping calls

Problems: Dropped calls, call interference, static sounds, interference with wireless internet.

Components used:
AT&T 2.4Ghz E2717B Wireless Phone
AT&T Callvantage Voip Service
Dlink Telephone Adapter
Roadrunner Internet - Time Warner (switched to Uverse)
AT&T Uverse package
2Wire Modem/Router

Background
We have been using AT&T Callvantage for awhile and noticing that whenever the phone rang, we would lose our wireless internet altogether. So, after calling Callvantage customer service, they tweaked something on their end to "reduce voice traffic". So, the wireless stopped dropping out, this issue was fixed.

Our other problem was that sometimes callers would complain of static, or that we sounded far away. This problem was due to our AT&T Wireless phone. The solution here: 2.4Ghz is simply not high enough for a wireless phone used around wireless networking. YOU MUST upgrade to at least 5.8Ghz phone, 6.0 (dect) if you can. This will fix your interference among other problems.

Last, we just recently subscribed to the AT&T Uverse package, and had been long time users of the AT&T CallVantage VOIP service. Now, after about 2 minutes of talking, our calls would be dropped, almost every call. This was solved by:

1. Calling callvantage customer service instructing us to:
   
2. Go into the Uverse 2wire modem configuration page, and set the Dlink router, to DMZPlus mode. This will stop the Uverse firewall from preventing traffic to the Dlink.
3. Finally, the problem was solved by using a newer Dlink Telephone Adapter, the older TA's do not seem to work properly with the Uverse package.
4. Then, we needed to setup DMZPlus Mode with the new Dlink.

So, to reiterate, if you're having problems with your AT&T CallVantage Service with Uverse:

1. Make sure your wireless phone broadcasts at least 5.8Ghz or more.
2. Make sure you're Dlink is running in DMZPlusMode (call customer service for instructions)
3. Make sure you're using the latest Dlink Telephone Adapter.

There, hopefully that saves someone hours and hours of research, and dropped calls.