Profile: Valcom Inc. specializes in analog and IP voice systems. We also deal with loudspeaker paging systems, emergency communication systems, intercom systems, SIP telephone system enhancements, intercom & paging systems and synchronized clock systems. Our products include one-way ceiling speaker, wall speaker, clean room speaker, metal wall speaker, wall mount volume control, door answering device and remote microphone. Our VIP-172L series of IP hands free Talkback intercom, with long line extender and dial code operated relay, are the perfect solution to implementing door phone or similar functions with modern IP telephone systems.