Telephone Systems General Description

Features
Microphone (External Unit)
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Microphone (External Unit)
An external microphone (RFDM) can be connected to the DKT2020-FDSP digital telephone
enhancing “full-duplex” operation by virtue of the “superdirectional” characteristic of the
microphone. When this option is on, the internal microphone is disabled on all but Voice First
Handsfree Answerback calls and OCA calls. The external microphone is powered by the DKT and
does not need to be turned off when not in use.
Music-on-hold
Music-on-hold can be derived from a customer-supplied radio, tape player, tuner, CD player or
other device to provide music or announcements to parties on hold on CO lines or on [DNs]. With
the Strata CTX, you can have up to 15 MOH/BGM sources. Each CO line group and each DID/
DNIS number may be assigned a specific MOH source. Stations and network Tie lines can also
share a unique MOH source.
Off-Hook Call Announce (OCA)
Station users may announce a call when the station they call is busy talking with the handset off-
hook. The announcement is only audible to the telephone user receiving the OCA call, not to the
other party in the original conversation.
Two different methods of operation are provided – handset or speaker OCA. With handset OCA,
the OCA caller’s announcement comes in on the telephone handset. With speaker OCA, the
announcement comes in on the speaker. Handset or speaker OCA can be set individually for each
telephone that must receive OCA calls. Speaker OCA requires a BVSU option PCB installed in the
telephone that receives the OCA call. Handset OCA has no optional hardware requirement.
When a busy telephone receives a handset OCA call, replying confidentially to the OCA caller can
be accomplished by pressing the
0VJ button (toggle) to place the original call on hold or holding
down the
0LF button to make a short reply. In either case, the original caller will not hear the reply
to the OCA caller. To reply to a speaker OCA call, the user covers the handset mouth piece and
talks back through the telephone microphone.
Any type of telephone can be enabled to originate OCA when calling a busy digital telephone. The
feature is activated automatically (optional setting) or manually (Call Completion code – digit 5).
Stations receiving OCA must be proprietary digital telephones assigned with OCA-receiving
capability in system programming. Standard single-line telephones cannot receive OCA.
Any type of station can make an OCA call, as long as the station has this option enabled in system
programming. OCA to DND telephones is allowed only if DND Override is allowed on the called
and calling telephones.
Off-Premise Stations
Off-premise stations are supported using either standard analog telephones or Toshiba digital
telephones. This can accommodate both individual telephones and branch office connections. Off-
site standard analog telephones can be part of the system, having access to many of the features
offered by the Strata CTX. Each off-site station requires a special OPX line from the CO.
Off-site digital telephones can be part of the Strata CTX system using MCK Branch Office
EXTenders. This is ideal for organizations with geographically dispersed locations, extending the
power of the main location’s Strata CTX to small branch offices over your existing data network.