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First thoughts are is the device near to a wall socket power supply?
Non "Switch mode" power supplies use transformers and these give off a radiated 50/60Hz hum which can be picked up by devices with amplifiers such as answering machines and phones etc. Try moving the answering machine to a new location where there are no power supplies nearby and see if that makes a difference? If it does you have a couple of choices, leave the machine where it is or move the power supply to another wall socket further from the answering machine.
I have made these cords up before, this cord only uses 2 conductors so a length of Cat3 (station wire) 3 pair or less would be more than enough. Looking straight at the jack end with the tab facing down the pins are numbered from right to left, starting at 1 from the right to 4 or 8 depending on whether it is RJ11 or RJ45. On the RJ11 end pin 2 is red and pin 3 is white,on the RJ45 end pin 1 is red and pin 2 is white. That's it all you need is a crimper and the ends.
Someone in our office recently damaged the RJ-45 cable for our
Polycom Soundstation. Because the jack was damaged I could not
determine the order of the cables. After a call to polycom, we found
the pinout information we needed - so I thought I would share, in case
anyone else finds themselves in a similar situation:
With the RJ-45 prong pointing down the wires, from left to right are:
Then Crimp and test. I got this information directly from Polycom
for use with the Polycom Soundstation. This information was not easy to
get. They originally told me they could not provide the information and
I would have to buy a power adapter. This is not true, just trim the
cable and follow the above instructions.
It needs to be plugged into a properly configured Avaya Definity digital port / wall jack. (NOT a regular telephone line as this can damage the polycom!!!) Does another Avaya digital phone work in that jack? If it does then call polycom for a RMA and eturn the phone under warrenty. If another Avaya digital phone does also does not work you need to check the PBX configuration or there is a wiring error at the jack or the PBX.