Low cost calls over the internet with Voice over IP (VOIP)

CSTD 08 Bottom Cable

For use with QD Sennheiser headsets and certain telephonesAvaya Call Master V PhoneAvaya Call Master VI PhoneCisco Systems 7910G PhoneCisco Systems 7910SW PhoneCisco Systems 7940 PhoneCisco Systems 7960 PhonePlantronics MX10 Audio Processor Multimedi