SIP POE INTERCOM VANDAL PROOF8203 Vandal Proof IP Intercom Vandal proof IP intercom for two way communication for secure door or gate entry The 8203 Vandal Proof IP Intercom is an IP doorphone for hands free visitor communication at a secure entrance door or gate access point and room intercom applications. This IP intercom doorphone is outdoor rated and is also a fully compliant 3rd party SIP endpoint. As a result the 8203 is compatible with most hosted cloud and premise based