I have been having intermittent problems with my internet connection at one of my sites. For example users on the internal network may not be able to access resources online or if they are using a web based application they get disconnected. Also, if you are remotely connecting to a server or computer on the internal network via RDP the session disconnects and reconnects continuously. I ran PingPlotter against my routers outside interface from a computer outside of the network. I linked the results from a test I ran over night. I see I have problems starting at hops 13, 14, and 15. Not sure if this is my equipment or my ISP's as I have another internet connection setup on the same router for failover that runs fine. Techs from ISP have been out to replace the modem, splitter, and check cables for excessive voltages in the line. Not sure what is going on here, any help would be appreciated.

http://imgur.com/qz4FWG1
http://imgur.com/SiUnkUJ