5-72 Standard Telephone FeaturesP 5.2 Standard Telephone FeaturesParalleled Telephone ConnectionA proprietary telephone (PT) can be connected in parallel with a standard telephone.This feature allows the PT user to set whether the paralleled standard telephone will ringor not, when an incoming call is received.Conditions• The default is “Parallel Off (No ring)”.• When receiving a call:— If standard telephone is set to ring, then both the PT and the standard telephone willring except when the PT is in “Handsfree Answerback” mode or Voice-Calling modewith the “Alternate Calling — Ring/Voice” feature.— If standard telephone is not set to ring, then only the PT rings. However, thestandard telephone can answer the call.• If you go off-hook while your paralleled telephone is in use, the call will switch over toyour telephone, and vice versa.• The “XDP*” feature is available.Feature ReferencesAlternate Calling — Ring/Voice (4.2/DPT Features)EXtra Device Port (XDP) (→ see Installation Manual)Handsfree Answerback (4.2/DPT Features)* XDP (eXtra Device Port) expands the number of telephones available in the system by allowing anextension port to contain two telephones. For more details, please consult with your dealer.