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Cisco Unified SIP Phone 3900 Series

Get basic IP communications to fit any budget

Replace traditional analog and digital phones with cost-effective VoIP communications. The Cisco Unified SIP Phone 3900 series combines an easy-to-use ergonomic design with basic communications features.

Features and capabilities

Easy-to-use IP phone

The Cisco Unified SIP Phone 3900 series is a simple, eco-friendly solution for your communications needs. Place the phones on a desktop or mount them on a wall.


The 3900 Series phones are a good fit for occasional-use environments like office lobbies, cafeterias, and hallways; retail sites; manufacturing facilities; and school classrooms.

Unified SIP 3900 series phones

Choose the best model for you.

Enhance Collaboration

Get affordable, basic VoIP for occasional-use business needs. (PDF - 3 MB)



Data Sheets and Literature