View single post by slychiu
 Posted: Sunday Oct 18th, 2020 03:13 am
 PM  Quote  Reply  Full Topic 

Joined: Saturday Apr 29th, 2006
Location: Singapore
Posts: 5055

  back to top

On CM9001, the DSI01 plug in submodule includes the Ringer, Door station Mic/Voice, and Local Telephone support circuits, see which includes the DSI01 manual download.

This offloads the circuits and makes the CM9001 lower cost for those who do not need these features

 Close Window