Digium and TeleMatrix announce an interoperability partnership that provides Asterisk dealers and developers with a wide variety of new SIP and DECT SIP telephone solutions for hotel guestroom applications. TeleMatrix is an ISO 9001 and RoHS-certified manufacturer of SIP corded, DECT SIP cordless, analog and digital Centrex telephones for hotel, education, healthcare and general business applications. Through the 2006 merger of TeleMatrix and Scitec, the combined companies have deployed seven million telephones at 30,000 commercial customer locations worldwide. Hotel customers include Accor, Best Western, Choice Hotels International, Hilton, Hyatt, International Hotels Group, Marriott, Starwood, Swissotel and Wyndham.