Many simple issues may be solved by rebooting the phone, which takes about 2 minutes.

Thinking Phones Networks supplies three different series of Polycom phones. Instructions for rebooting each model follow.

• To reboot the Polycom 301

  The Polycom 301 is a two line phone and has 3 small black oval buttons beneath the display screen.

  To reboot: Press and hold the '+' and '-' buttons, which are just below the keypad, and the 'Hold' and 'Do Not Disturb' buttons which are to the right of the keypad. Keep the keys held down until you see the message "Reboot Initiated". At this point you can let go of the buttons.

• To reboot the Polycom 330

  The Polycom 330 is is a two line phone and has 3 small black oval buttons beneath the display screen

  To reboot: press the '+' and '-' buttons under the keypad along with the 'Speaker' and 'Hold' buttons to the left of the keypad. Hold these down untill the phone beeps. When you see the "Reboot Initidated" you can let go of the buttons.

• To reboot the Polycom 501

  The 501 is the three-line phone, and has 4 small black oval buttons beneath the screen, and 3 blue buttons to the left of the screen.

  To reboot: Press and hold the '+' and '-' keys, which are below the keypad, along with the 'Hold' and 'Messages' keys, to the right of the keypad. You should hear a series of beeps. Keep the keys held down until you see the message 'Reboot Initiated".

• To reboot the Polycom 550

  The Polycom 550 is a three line phone with four small oval buttons beneath the display

  To reboot the 550: hold down the 'Messages' and the 'Microphone' button to the right of the display long with the '+' and '-' keys below the keypad. You should hear a series of beeps. Keep the keys held down until you see the message 'Reboot Initiated"

• To reboot the Polycom 601

  The 601 is a six-line phone, and has 6 small black or grey oval buttons to the right of the screen.

  To reboot the Polycom 601, hold down the "Messages" and the 'Microphone' button to the right of the display long with the '+' and '-' keys below the keypad. You should hear a series of beeps. Keep the keys held down until you see the message "Reboot Initiated"

• To reboot the Polycom 650

  The 650 is a 6-line phone, and has 6 small black or grey oval buttons to the right of the screen.

  To reboot the Polycom 650, hold down the "Messages" and the 'Microphone' button to the right of the display long with the '+' and '-' keys below the keypad. You should hear a series of beeps. Keep the keys held down until you see the message "Reboot Initiated"