The Cortelco Phone is DISCONTINUED! Good-bye, old friend!
To adjust the Ringer Volume on the Cortelco 2720:
1) Access the menu by pressing and holding the Menu button for 3-4 seconds.
2) Once the Menu pops up simply tap the Menu button until you reach the Ringer Volume option.
3) Once in the Ringer Volume menu you can adjust it to levels 1-10 using the up and down arrows on the
You can also turn the Ringer off on the Cortelco 2720 by turning it down past 1 to “OFF”.