This is my biggest pet peeve about being a phone guy.
A customer calls up and explains to you that when they get a phone call, the person on the other end can talk to them, but can't hear them.
So we charge 90 bucks an hour to drive out to their location, look at the phone.
99.99% of the time it's caused by this little contraption right here.

Do any of you have one of these on your phone at the office?
TAKE IT OFF THERE and learn to not twist your handset in a 360 degree circle between picking it up, talking and hanging it up.
If your coilcord looks like it's twisted inside of itself do this;
Pick up your receiver and let it dangle from the coilcord. You'll see it start spinning and spinning. When it stops, your cord will be straightened out and VOILA, no need for these little bastards.
What they do is spin in the center so that your coilcord doesn't get twisted around. They go bad usually VERY quickly.
A customer calls up and explains to you that when they get a phone call, the person on the other end can talk to them, but can't hear them.
So we charge 90 bucks an hour to drive out to their location, look at the phone.
99.99% of the time it's caused by this little contraption right here.

Do any of you have one of these on your phone at the office?
TAKE IT OFF THERE and learn to not twist your handset in a 360 degree circle between picking it up, talking and hanging it up.
If your coilcord looks like it's twisted inside of itself do this;
Pick up your receiver and let it dangle from the coilcord. You'll see it start spinning and spinning. When it stops, your cord will be straightened out and VOILA, no need for these little bastards.
What they do is spin in the center so that your coilcord doesn't get twisted around. They go bad usually VERY quickly.