Hello, We are installing a new NS1000 with a TDE620 Gateway cabinet. This is replacing a Comdial FXII with an Extensive Auto Attendant Tree. Has anyone prerecorded the Panasonic Custom Service Greetings using a PC then uploaded them to the NS? Do the greetings sound better than when recorded using a telephone? If so, what software did you use? What microphone? Thank You!