number 5 in the list of things to do before the test says re-boot the router by powering it OFF. Number 8 says it could take up to 10 days for the line to train up to its full speed but nowhere does it say the router has to be ON continuously for that period.
Biggles
1 You are asked to reboot the router to make sure it is working properly.
2 The exchange does not know you have rebooted your router. All the exchange knows is that the connection has died. It assumes this is a fault and then retrains the line when connection is re-established.
3 If you switch the router OFF, you disconnect the line. When you switch it back ON, it reboots - see point 2!
"Training the line" can only take place when the router is on as it is a process where the exchange increases the speed until the error rate reported by the router is unacceptable. Training is really the wrong word - it should be "optimises the speed of transmission". So, you can safely take it that you should leave the router on.
4 It could be that more modern equipment takes a shorter time to retrain the line following a loss of connection.
5 The IP Profile is dynamic in that if you get interference on the line and the error rate goes up, the transmission speed is reduced until the error rate is acceptable. When the inteferenece reduces, the speed is allowed to rise either until the error rate becomes unacceptable, or the ISP cap is reached.
| Wed 27 Apr 2016 10:15:24
#38 |