The PoE 8039 SIP Video Mullion Intercom is a wide-angle IP video intercom designed for hands-free visitor communication at a secure door entrance framed in a mullion. The narrow footprint of this intercom is ideal for installation on mullion door frames, however, the 8039 can be mounted to any surface for intercom communication at gates and other building entry and access points. This IP video intercom / doorphone is outdoor-rated and is also a fully compliant 3rd party SIP endpoint. As a result, the 8039 is compatible with most hosted / cloud and premise-based VoIP telephone systems.