Channel: A channel is used for measuring speech/data quality via one mobile phone(or one ISDN Channel/one PSTN line)
Master & Slave: The master always the first call & controls the measurement. With Qvoice each measurement Channel can be configured as a Master or as a Slave. Master & Slave must be equipped with a DSP
Maximum call duration: After 10 hours of measurement operation Qvoice stops all measurements & then starts up again using the same measurement parameters. The size of the measurement files will be limited & the time re-transmitted to the slaves.