I have now installed a Starplus STS. It was a pleasant experience and I learned some things. I have used Vodavi products since 1984 when I went into business. All of their systems are reliable !!! I especially like the Digital Electronic Systems they used to make. Have a 1428 in my home/business.
First of all, if you buy the KSU, make sure the vendor you buy the equipment from gets the latest EPROMs from Vodavi, or call Vodavi Tech Support and request the latest software. They provided it for me, but I am a registered dealer of the equipment. They should at least offer it to the supplier you are getting the equipment from.
Secondly, the latest software for the voice mail is available as a download from the Vodavi web site. Again, I am a registered User of their site, but it was free and came with instructions for updating the software. It only requires a computer with a serial port and a straight thru 9 pin (female both ends) cable. It was easy.
The system I installed had one cabinet which is full of cards now. I installed 23 phones and 1 DSS console. I did not have an out of box failure of a phone or any of the equipment. It went in smoothly. Only 2 wires to each set. One 25 pair cable for stations and one 25 pair cable for CO lines. I have had no troubles so far.
I did purchase the internal modem for remote programming. Again, the software for the remote maintenance is available on the Vodavi web site to registered users. The modem has since failed, but I have received the advance replacement. It worked fine for about a week.
Overall, I rate it a great system for the price and quality. The voice mail is 8 ports and you just don't find that for this money.
A couple of things to consider in programming.
You can make the large LED at the top of the LCD display flash when there are VM messages.
The voice mail directory digit comes set for "4". It can be changed to any digit (I changed this one to 9 because they previously used 9). The documentation is not "real" clear on how to do this.
The class of service setting for a mailbox determines length of messages, number of messages and save period. Don't necessarily use the default.
Caller ID worked great out of the box.
Flexible numbering allowed me to match the extension numbers of the system I removed, which by the way was a Toshiba that was having voice mail problems and only had two ports. One of the big reasons for them getting a new system.
Good luck,
Gary Blake