1.1 General Features124 Feature Manual1.1.96 Paging—GroupDescriptionAn extension user can make a paging announcement to a certain extension group. The pagingannouncement can be heard through the built-in speakers of the proprietary telephones (PTs) that belongto the certain extension group ( [600] Extension Group).Programming Manual References[PT Programming][600] Extension Group[PC Programming]9.2.11 Extension Group [2-6]—Group No.Feature Manual References1.1.53 Extension GroupOperating Manual References1.3.70 Paging—Group1.1.97 Paralleled TelephoneDescriptionAny proprietary telephone (PT) can be connected in parallel with a single line device, such as a single linetelephone (SLT), fax machine, or modem.When parallel mode is used, the 2 telephones function as follows:• Both share one extension number.• Either telephone or device can make or answer calls.Conditions• System programming determines the SLTs that can be connected in parallel with a PT ( [610]Paralleled Telephone).• When the SLT is in operation, the display and LED (Light Emitting Diode) indicator on the paired PT willfunction in the same way as when the PT is in operation.• The following features cannot be used with an SLT connected in parallel with a PT:– Call Splitting– Call Waiting Caller ID– Conference– Door Open while connected to the doorphone– External Feature Access (EFA)– Hot Line• An SLT connected in parallel with a PT will not ring if the PT is: