Navigate the menu
Use the Navigation key to move around in the menu structure.
The three Soft keys below the display are used for choices in the menu. The function of each Soft key is explained by text in the soft key field in the display.
The menus are; Calls, Contacts, and Settings.
Use the local phonebook
To find and call a name: Enter Contacts 
, step to Call contact and press Select. Enter the first letter in the name or the whole name (will be displayed in Search field while entering text), or step in the contact list. Select the name and press Call.
To edit the contact: Select Edit contact, select the name and press Edit. Make your changes and press OK and then press Save.
To add a contact: select Add contact, select New or From call list. Press Add, enter the name and press OK. Select Number, enter the number, press OK and press Save.
To delete a contact: select Delete contact, select the name, press Delete and then press Yes.
Use the central phonebook
Enter Contacts 
, and select Central phonebook. Select Search by name, Search by number, or Last result. Enter the first letter(s) in the first name, and/or the first letter(s) in the family name. Press Search. The Central phonebook will be searched and a list of matching names will be displayed. You can step to the next entry in alphabetic order by pressing the Navigation key. Press More to add contact, or press Call or the
to make the call.
Avaya 3720 DECT Telephone - Quick Reference Guide