teleSys Software, Inc. | 1,556 followers on LinkedIn. teleSys Software is the premier provider of advanced Telecommunications solutions for the next generation LTE Signaling Networks, providing open systems hardware and software. teleSys was established in 1997 to provide Signaling Solutions for the Telecom Networks in the form of ease of use, open systems hardware and software. teleSys' products are deployed globally with all major Tier1 Carriers providing services to more than 500 million subscribers.