I had an ADSL+ internet connection from a third party ISP (Internet Service Provider).
Attenuation was low. SNR (signal-to-noise) Ratio was Normal. I checked it with the tool(DMT) from the internet connecting a laptop directly to the modem and with Bell's technician separately. All were normal. No problem.
Multiplexer and Phone line is Bell's. After the multiplexer, my ISP deals with the data. But the carrier is Bell.
Still Signal dropped randomly. Upload and Download were very low as a turtle.
Sometimes out of 4 pings (icmp echo reply) requested 100% packet drops. Traceroute/tracert hanged sometimes not always. Overly long time for random hops. Changed the Demarcation Box. Changed wires from Demarcation Box to internal phone line junction using Bell's technician. Still no luck.
Changed Router three times. Netgear. DLink. Linksys. All in Bridged mode. Behind the adsl+ modem.
Used the numerical parameters that were supplied by the ISP for the modem.
Windows Network Sharing Center showed there is no problem with the home network. There is a cross mark from the internet to the router. I was using dynamically assigned IPs for the network. Also tried statically assigned IPs. Still nothing. Changed the modem. First had Speedtouch then changed to TP-Link modem. I had good antivirus software. Scanned and updated regularly. Checked for spyware, adware, malware, virus but the result is negative. Used two antiviruses. All computers are scanned regularly. Had the highest level of encryption (WPA2+AES) that time around for wifi. Each time I wanted to debug I restarted the computer where I will debug or did ipconfig /release ipconfig /renew Used netstat/nbstat to search for backdoor service with virus. Still nothing.
Canceled ADSL+ (Asymmetric Digital Subscriber Line). Have cable. Everything is fine now.
Now my question: What else could have I done? Did I leave anything unchecked?
