I have a partner plus phone system and I use MLS system phones along with regular standard phones. I had caller ID and Call waiting before installing system. How can I get them back? Is it possible? Thanks a lot!
If you want to keep the Partner Plus, you would have to run additional wires and purchase caller ID adjuncts, such as the AT&T 436.
If it were possible, upgrading to a Partner ACS would get you a processor that can handle caller ID on system phones. Non-system phones will not show caller ID and none of the Partner systems support call waiting ID.
But if the 2nd part of your question is not "Call Waiting Caller ID", but simply "Call Waiting", Feature 03 is the code for Flash, which you can program onto a button to push when you hear the CW signal.
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