VoIP, PBX and telco engineers use CPT-Master as a PC-based tone generator in their test setups to verify correct behaviour of telephony equipment and software. Comprehensive testing with accurate as well as non-ideal frequencies and/or timings is possible, since CPT-Master is able to generate custom tone frequency/cadence combinations.
Engineers at Radisys Corporation used the optional ToneSet Export feature in CPT-Master, together with custom reporting, to supplement and review their in-house data.
DSP engineers at Freescale Semiconductor, Inc. used the optional ToneSet Export feature in CPT-Master to quickly and easily generate a set of international dial tones which they used for testing dial tone immunity of DTMF decoders.
A number of subscribers to the World Tone Database rely on CPT-Master as an offline version of the web-based service.