260 Reference
Do Not Disturb (DND)—Calls do not ring through to stations placed on DND. Calls to Telecor
VS1 stations on DND are automatically transferred to Voice Mail.
DP200 Display Phone—A phone designed for use with the Telecor VS1 phone system. It is
equipped with a 2 line by 16 character display, which provides information about the calls being
handled. The DP200 Display Phone has the capability to process five calls.
Dry Contact Unit (DCU)—The Dry Contact Unit is a hardware interface to which external
contacts are connected in systems that use Model 250 Port Expansion Units. The Dry Contact Unit
provides connections for two speakers, two music inputs, and two dry contact outputs.
DSS—An abbreviation for Direct Station Select. See Direct Station Select.
DTMF—An abbreviation for Dual Tone Multi-Frequency. See Dual Tone Multi Frequency.
Dual Tone Multi-Frequency (DTMF)—A term describing push button or touchtone dialing.
When you touch a button on a push button keypad, it makes a tone and sends an in-band signal.
Dynamic Data Exchange (DDE)—A Microsoft®-defined method for exchanging data between
Windows
®
applications. Support for DDE must be explicitly coded into an application in order for
this feature to be supported; it is not automatically included in Windows service. Data is passed
between DDE clients (or “sources”) and DDE servers (or “destinations”) as “messages”. Connect
can be both a DDE client and a DDE server.
E
Emergency Boot Floppy—A floppy disk that can be used to restart the TVS in case of a system
failure. Before making changes to the TVS, it is recommended that you make an Emergency Boot
Floppy.
Executive Privilege—Enables an extension to monitor conversations on other extensions.
Extension—A station option (telephone or CTI application) connected to a port on the PEU. Also
refers to the digits dialed to gain access to a station option, voice mail, guest mailbox, work group,
Auto Attendant, Paging Zone, conference room, or ACD.
Extensions List—A feature in Attendant and Connect that contains a list of all names and
extensions on the Telecor VS1 phone system.
External Call—A call made from or made to a number outside the Telecor VS1 phone system.
External Contacts—The PEU Model 205 and DCU Model 100 each have six external contacts
that are used to connect Zone Pager Outputs such as overhead paging systems; Music Inputs such as
audio sources; and Relay Outputs such as electric door locks.
External Flash—A signal that is sent outside the phone system.
F
Flash—A signal sent to a PBX or Centrex indicates DTMF or in-band instructions will follow,
such as transferring a call to another extension.
Flexible Ringing Assignments—The capability to program a CO line to target multiple
destinations, such as a receptionist, a group of extensions, Voice Mail, and so on.
Flexible Station Numbering—The capability to program station extension numbers with the
number of digits desired. For example three-digit extension numbers or four-digit extension
numbers. Each station on a system must have the same number of digits.
Forward—A feature that temporarily redirects incoming calls to another extension.
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