Bunnie - Well you missed the analysis boat on this one. Stop drinking and think about what you are saying. The RSIS is a serial interface sub-assembly that piggy backs on the RSIU for the DK424.....No Caller ID There!

Ringtone -- You want an RCIU card for the first 4 trunks and an RCIS for the lines 5-8.

Now available Voicemail Programmer Kit to program your Toshiba Voice Mail across your network.

Toshiba Technical Support at: One Ring Telecom