How do you pair plantronics 457a headset?
When joining (or pairing) a Plantronics bluetooth headset to
another device a lot depends on the other device. Assuming that you
know the necessary steps of your phone, PC or other device for
connecting a bluetooth device, all Plantronics headsets pretty much
follow a set pairing procedure for connectivity. This one is for
the Discovery 975:
1 Turn on the Bluetooth feature on your phone.
2 Turn the earpiece on. Press and hold the call control button
until the indicator flashes red/white.
3 Use the commands on your other device to locate and select
your earpiece. 9xx Plantronics.
4 If prompted for the PIN code or Passkey, enter 0000.
Pairing is successful when the indicator on your earpiece
flashes white.
Note If your phone supports Secure Simple Pairing (SSP), you
will not need to enter a PIN code or Passkey.