DISTINCTIVE RINGINGThe OfficeServ 7400 provides distinctive ringing at a station based on selected parameters.• Outside calls have a single ring repeated, while intercom calls have a double ring repeated.• Any trunk or station can be programmed to ring a specific digital keyset with a predefined ring tone (1-8) or an analog station with a predefined cadence (1-5) selection.• Digital keysets and analog stations may receive distinctive ringing based on the Caller ID numberreceived or the DID number dialed.DOOR LOCK RELEASE (PROGRAMMABLE)After answering a call from the door phone, users can dial a code to activate a contact closure. This can beused to operate a customer-provided electric door lock release mechanism. The contact closure timer is pro-grammable from 100–2500 ms.DOOR PHONESThe door phone interface module (DPIM) provides for connection of a door phone to a DLI port. Pressing thebutton on the door phone produces a distinctive ring (three short rings repeated) at the assigned station orstation group. If not answered within a programmable time, the system releases the door phone and stopsthe ringing. Stations may call the door phone directly and monitor the surrounding areas. Door phones fol-low the system ring mode plan.E & M TIE LINES (T1 Service Only)Your office can be connected to another office with a tie line. Use it to make calls to stations in the other sys-tem. If programming allows, you can access lines in the other system to make outside calls. Tie line calls canbe put on hold, transferred and conferenced in the same way as are other outside calls. Users accessing thetie line from the other system can get a line in your system and make outgoing calls. These calls can be con-trolled by assigning a dialing class to the tie line.Your local telephone company may use E&M tie lines to pro-vide DID service. In this case these tie lines can be programmed to follow the DID translation table. See DID.Translated E & M tie line calls have Ring Plan routing capabilities.EXECUTIVE BARGE-IN (OVERRIDE)The feature allows specially programmed stations with a barge-in key to override the automatic privacy ofanother station or outside trunk. Programming allows barge-in with or without a warning tone. Stations mayalso be programmed as “secure” so that they cannot be barged-in on.With Warning ToneWhen the barge-in with tone option is set, the barging-in keyset has its microphone on and the barged-in onstation receives an override display. A double burst of warning tone sounds and repeats every ten seconds.This feature does not work from single line sets.Without Warning ToneWhen the barge-in without tone option is set, the barging-in keyset has its microphone muted and thebarged-in on station does not receive an override display. This feature does not work from single line sets.Trunk Monitor or Service ObservingThis feature allows the user who barged-in to retain the trunk call after the original station has hung up.WARNING: BARGE-IN WITHOUT TONE MAY VIOLATE STATE OR FEDERAL LAWS CONCERNING THE RIGHT TOPRIVACY. SAMSUNG TELECOMMUNICATIONS AMERICA IS IN NO WAY RESPONSIBLE FOR THE POSSIBLE MIS-USE OF THIS FEATURE.4.16