Just added a TCIU1A to Toshiba DK SUB40 for a customer and I have the caller ID working on the only phone they have with a display. My question is this: is there a code I can enter under a button in program 39 so they will have a call history? I know on the CIX40 there is but I cannot find the code in the SUB40 programming manual. I don't even know if that was an option on that system. It was installed in 1993. Thanks for your responses.

The DK40 will only store abandoned or unanswered calls. You can use program *51 & *52 for these type calls and then assign a button code of 462 in program 39.

Thanks for your response. I'll try that today.