General Features82 Features GuideParalleled TelephoneDescriptionAny PT can be connected in parallel with an SLT.The following two combinations of telephones are available:a) APT + SLT (an Analog Proprietary Telephone and a Single Line Telephone / a singleextension port)b) DPT + SLT (a Digital Proprietary Telephone and a Single Line Telephone / a singleextension port)When a parallel connection is made, an extension user can make and answer a call using eitherone of two telephones.Conditions• Hardware RequirementsDHLC card (KX-TD50170) or HLC card (KX-T96170) is required to utilize this feature.• To enable Paralleled Telephone mode, set "Parallel / XDP" to "Parallel" in the ExtensionPort Assignment screen Guide>.• The corresponding PT user can activate or deactivate the paralleled SLT ringing by dialingthe feature number for "Parallel telephone mode."• Paralleled Telephones (APT+SLT / DPT+SLT) share the same extension number.• Extra Device Port (XDP)If EXtra Device Port feature (DPT+SLT) is activated, each telephone has its own uniqueextension number and acts as completely different extensions.• The PT can be used to perform normal operations whether or not the SLT is enabled.• In the DPT + SLT combination, if one telephone goes off-hook while the other telephoneis on a call, the call is switched to the former.• In the APT + SLT combination, if one telephone goes off-hook while the other telephoneis on a call, a 3-party call is established. If one user goes on-hook, the other user continuesthe call.• When receiving a call;The SLT is activated; Both the PT and the SLT will ring except when the PT is in Hands-free Answerback mode or Voice Alerting mode.The SLT is deactivated; PT rings but the SLT does not ring.• When the SLT is in operation, the display and LED indicator on the paired PT will work inthe same way as if the PT is in operation.• If APT + SLT are used, the extension user cannot originate a call from the SLT if the APTis:— playing BGM— in programming mode— receiving a paging announcement over the built-in speaker
