The Avaya IP Office can accomodate analog, digital, and IP phones. These include:
- 9500 Series Digital Deskphones
- 9600 Series IP Deskphones
- 1400 Series Digital Deskphones
- 1600 Series IP Deskphones
- 5400/2400 Series Digital DeskPhones
- 5600/2600 Series IP Deskphones
- 1100/1200 Norstar IP Telephones (using SIP protocol)
