Complex sentence: TouchWave developed a product line called WebSwitch that was designed to replace traditional private telephone exchange systems in small-to-medium-sized companies with a phone system that incorporates communication features provided by the Internet.
Split into simpler sentences: TouchWave developed a product line called WebSwitch that was designed to replace traditional private telephone exchange systems in small-to-medium-sized companies. WebSwitch was part of a phone system that incorporates communication features provided by the Internet.