The Avaya 9508 is designed for small business executives who spend a great deal of time on the phone. Advanced telephony features are available to the user to increase productivity.

Avaya has transitioned the 9500 series digital telephones to a Global form factor. Global phones have the English language text removed from the faceplate and use icons to communicate button functions and fixed features such as message, menu, headset, mute, and speaker. The Global form factor is the currently manufactured model.