- The home telephone wiring
Besides referring to the age in years or the thickness and quality of the cable itself greatly influenced if the cable goes through the same corrugated tube through which electrical cables pass (This goes against the European Union's low-voltage electrical installations, but in many homes is the case). The electric cable creates an electromagnetic field that induces noise in the signal cable is on the phone.
For legal purposes, the PCR is the same as a PTR or a Splitter, serves to divide the responsibilities in the event of a problem in the installation. From the street to the PTR is the responsibility of the operator, the PTR on it is your responsibility. The PCR is an older version of PTR, in fact, are exactly the same except that the latter does not bring a circuit to test the phone line. This circuit was eliminated because it causes problems with ADSL. The Splitter would be an improved version of the PTR, but in many cases not installed unless requested by the customer, accounting for a small investment, usually more than one or two microfilters.
- The operating system we're using our equipment
And I do not mean to be infected by viruses or anything, but because low-level network stacks of different operating systems give different yields. For example, I have personally verified that the stack of Linux is much more effective than Windows. A simple test, put two teams on the same network to download the same file from a P2P network, in many cases leaves Linux bandwidth to Windows. Conclusion:
To install the most optimized our house, we should have installed a splitter instead of a PTR (if the phone line will multiply with ADSL, bone, the phone does not work for VOIP) and the router directly connected to it. Cablegram RJ45 network cable to the room where we have the equipment or to a place where we installed a network switch to provide connectivity to all computers on the network. From here we recommend at least try a GNU / Linux (novice users personally recommend Ubuntu and people with more knowledge debian ) for best results both navigation and downloads.