Telephone and data exchanges, private branch exchanges (PBX), telephones, asynchronous transfer mode switches, packet switching systems, namely, telephone signal processing software and hardware sold as a unit for use in embedded systems, fiber-optic transmission systems, namely, fiber optic transmitters, receivers and transceivers sold as a unit to be used in the transmission of video, audio, and data signals over optical fiber, digital transmission systems, namely, digital transmitters for ...

Telephone and data exchanges, private branch exchanges (PBX), telephones, asynchronous transfer mode switches, packet switching systems, namely, telephone signal processing software and hardware sold as a unit for use in embedded systems, fiber-optic transmission systems, namely, fiber optic transmitters, receivers and transceivers sold as a unit to be used in the transmission of video, audio, and data signals over optical fiber, digital transmission systems, namely, digital transmitters for ...