A&T&T Netgear ADSL Router/Modem incompatibility with Cisco ASA 5505 Firewall

We have a handful of locations where we still use AT&T ADSL for Internet. We use a Cisco ASA 5505 Firewall at these location to create an IP Sec Tunnel back into our company network. We static ips from AT&T in order to make this work. We have had these connections set up for some time. In the past we had even more.

We used to use the Motorola/Netopia ADSL Router at these locations. AT&T has stopped using these and due to out of date firmware and the fact that AT&T no longer supports the Motorola, we are using a Netgear ADSL Router that AT&T supplies (we do have to buy them) which they do support.
 
Now that we are using the Netgear Routers we have a connection issue at all of these locations. Sporadically, but at least once or twice a day the location will lose connectivity. A reboot of the Netgear router is necessary in order to get it back up.

AT&T, though, says it is our equipment as they show the circuit never went down.

Any help will be appreciated.
yatesitAsked:
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Davis McCarnOwnerCommented:
1) What is the model number of the Netgear and how is it configured?
2) Get the free version of PingPlotter ( https://www.pingplotter.com/freeware.html ), set it to check every 2.5 seconds and keep 500, point it at one of your ip's from a different location, and let it run.  If it shows a high Packet Loss (PL%) on a hop or "destination unreachable" at any point, AT&T is feeding you malarkey.

I had a client with three RDP's active all day from a remote location.  They were suddenly being disconnected once or twice each day.  Pingplotter showed a Time Warner box in Atlanta with a 25-30% packet loss.  It was absolutely a miserable task to get them to fix it; but, eventually, they did.
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nociSoftware EngineerCommented:
IPSEC key renegotiation might take some time on CPU starved routers.
more time then is left on the tunnel...

To check that. Ping through the tunnel to verify tunnel uptime and ping to a global address to  verify DSL uptime.
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