Setting ringtones and sounds
With Lync 2013, you can select from a number of preconfigured ringtones and assign them to particular forms of incoming calls. For example, you can set up a specific ringtone for standard incoming Lync calls, another ringtone for team call groups, one for delegate groups, and another for response groups. The ability to assign different ringtones to specific incoming call types gives you an indication of who’s calling and why.
Set ringtones and sounds
In the Lync client window, click the Settings icon (the small gear graphic).
In the Options dialog box, click the Ringtones And Sounds tab.
In the Ringtones section, select the type of incoming call.
Browse the available list of ringtones until you find your preferred option.
Repeat steps 3 and 4 for all types of call and then click OK.