Instruction manual

System Features
Distinctive CO Line/Directory Number Ringing
74 Strata DK General Description 6/00
Distinctive CO Line/Directory Number Ringing
The incoming line ringing tone to digital telephones is distinct from the internal ringing tone
indicating the type of the call. This feature is optional for standard telephones by using a different
ring pattern.
Door Lock Control
Digital and electronic telephone station users can unlock a customer-supplied electronic door lock
at the touch of an optional button on their telephone.
♦ DK14 supports up to two locks
♦ DK40i supports up to three locks
♦ DK424i supports up to five locks
Door Phones (MDFB)
Door phones are frequently mounted near building entrances and associated with a customer-
provided door lock to help screen visitors. Door phones can be assigned to ring [PDNs] and/or
[PhDNs]. Each door phone must be connected to a DDCB or HDCB.
They also monitor sound—station users can call the door phone and listen to sounds from the
surrounding area. In a warehouse-type environment, a door phone can work as a “hot link,” for
example, the door phone can have a preassigned button that accesses a certain telephone [DN] in
an office, and any common [DNs].
♦ DK14 supports up to six door phones
♦ DK40i supports up to nine door phones
♦ DK424i each support up to 12 door phones
DTMF Back Tone
The system can be programmed to allow or prevent DTMF tones from being returned to digital
telephones when a user dials on outside lines or sends DTMF digits to a voice mail device.
DTMF and Dial Pulse CO Line Compatible
The Strata DK System works with either DTMF or rotary dial pulse CO lines on a line-by-line
basis.
DTMF Signal Time (80/160 ms)
DTMF tones that are sent via Speed Dial to lines and via automatic dialing to voice mail devices
can be set to 80 or 160 milliseconds. The time can be set independently for line out-dialing and for
voice mail automatic dialing. See “Continuous Dual-tone Multi-frequency (DTMF) Tone” on Page
102.