When I attempt to do so, I get a place handset in base message onscreen. After about 30 seconds, I get a registration failed message. 1. Are the 1780-3 handsets NOT compatible with 1780-3BT? 2. If compatible, what do I need to do? I have recharged the batteries, with the same results.
You will not be able to do this as they are two totally different machines with totally different operations although the 1780- appears the same it is the celllink and dect that makes the difference
you can however add as many hand sets of the same model as you wish to the same model
it has to do with updated circuitry required by the telecommunications department to operate on the system
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Thanks for the helpful, if unsatisfactory answer.
to you it might be unsatisfactory but I have both systems , the older one in the shed and the newer one in current use and I can assure that they are not compatible or I would have not bought the upgrade to meet the communication requirements
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