So I have a CS530 headset with the APU-70 electronic hook switch cable. (this is the one with the USB connector)
When I plug this into a 8961 with out a key expansion module, everything works as expected, but when I plug it into a phone with the expansion module, I either get nothing at all, OR "the phone is unable to power this accessory"
I have also tried using the APU 82 cable that has a normal handset style plugs. This works, but I cannot answer and disconnect using the headset.
I would like my cake and eat it to please :-)
Any ideas would be great!
Thanks