upload bandwidth

penrhyn

CRC Cyclic Redundancy Check, its an error checking method used by digital communications.
By capped I mean that due to your line being noisy, Sky have deliberately reduced the speed of your connection so as to make it stable.

Have you tried a quiet line test?

Connect a good telephone into your master socket and dial 17070.
At the time of writing you hear a female pre-recorded voice say:

This circuit is defined as 01234 123123.
BT line test facilities.
Please press 1 for ring back, 2 for quiet line, 3 for fast test, 4 for fast cleanse or clear down.
[message repeats 3 times]

Select option 2 (quiet line) and listen to what you hear. You should hear perfect silence on the line – there should be no pops, clicks, whistles, buzzing and the like. If you do not hear silence first check it isn’t the phone you are using, wiggle the cable a bit to see if that affects it, if not then you know you have a problem with your line to the BT exchange. Any problems with ADSL connectivity (low speed, connections always dropping, etc) are likely caused by this.

vixen1500

well we have cordless phones, but the line was quiet