Answer
Sep 18, 2026 - 10:11 AM
Supported protocols determine compatibility with your existing phone system and future upgrades. The best phones support open standards like SIP, ensuring broad interoperability with most VoIP platforms. The entire Poly E Series, including models like the Poly Edge E450 and Poly Edge E220, are Zoom and Metaswitch certified and support industry protocols, guaranteeing they work seamlessly in diverse environments. The range ensures you’ll find a model that fits your platform requirements.
