Toshiba strata DK8 Installation Instructions Manual page 257

always 10 seconds. Pause timing applies to
Speed Dial on data calls made with Data
Interface Units (DIUs), as well as to Speed
Dial for regular voice calls.
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Flash Timing, Code4-When on a CO line,
a station user can press the Flash button
and the CO line will open (flash) for a period
of either 2 seconds, 0.2 seconds, or 0.5
seconds depending on this assignment mode
with Code 4. A flash can also be activated by
pressing the Cnf/Trn button and dialing 4
5. In general, this choice reflects whether to
disconnect and regain dial tone (2 seconds)
or to use PBX or CENTREX features which
require a flash signal (0.5 seconds). This
flash timing also applies to flashes inserted
when dialing via Data Interface Units (DIUs).
NOTE:
The 0.2 seconds option is not normally used
in the United States.
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Pause After Flash, Code 5-Some Central
Offices or CENTREX facilities require a pe-
riod of time after a flash signal before they
can accept dialing signals. A selection of
pause timing can be made with Code 5 to
automatically delay any dialing signals after
flash. This timing applies to speed dial calls
(with flash signals between the telephone
number digits) as well as manual dialing.
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QRCWK4RCU Seize Time, Code g-One
channel of the QRCU/K4RCU Dual-tone
Multi-frequency (DTMF) receiver/decoder
is seized when it is needed for the decoding
process, such as with a standard telephone
with a DTMF dialpad. When placing outgo-
ing calls with DTMF standard telephones,
the talk path to the outside party is not "cut-
through" until the QRCU/K4RCU circuit is
released. The release time of the QRCU/
K4RCU channel can be programmed with
Code 9 for a time between one and nine
seconds (initialized timing is four seconds);
the release time is the time it takes to release
the QRCU/K4RCU circuit after the last digit
is dialed.
The choice of timing is a trade-off between
CO line time to connect and user speed. If
the time is too long, the outside called party
StCTlONlOO-816-302
MARCH1993
may answer before the voice path is "cut-
through," and the caller will not be heard. If
the time is too short, a standard telephone
user inputting DTMF tones could be cut off
prematurely from using other features, such
as Speed Dial, or Toll Restriction may be
defeated. (To prevent Toll Restriction de-
feat, force standard telephones to dial out-
going calls via Least Cost Routing (LCR).
When dialing via LCR, standard telephones
cannot defeat Toll Restriction if the QRCU/
K4RCU times out.)
NOTE:
If no digits are dialed after accessing an
outside line, the QRCWK4RCU remains
seized for 15 seconds and then drops; how-
ever, the CO line remains connected.
Program 13-Defining the Message Center:
Each digital and electronic telephone can re-
ceive a maximum of four message waiting indi-
cations. One of these four is reserved for the
designated Message Center. Typically, the tele-
phone accompanying an Add-On-Module on
DK8 or a DSS console (DDSS or HDSS) on
DK16 will be the Message Center. However, if
incoming traffic to an ADM or a DSS console
attendant is heavy, another station may be
assigned to be the Message Center.
Program 15-Assigning Dial Pulse (DP)/Dual-
tone Multi-frequency (DTMF), Tenant Serv-
ice to Individual CO Lines:
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Automatic Release (AR) on Voice Mail
(VM) Calls, Code O-Some Central Offices
will send the AR signal-a 95 or 450-milli-
second open of the CO line loop-after
(typically 1 - 15 seconds) an external party
hangs up to disconnect the CO line. If an
outside party hangs up before or after a VMI
auto attendant hookflashes to transfer a
call, the Central Office will send the AR
signal to the STRATA DK8 or DKI 6 system,
which will then send "D" (Program 31, LED
15) tone to the VM/auto attendant device to
release and clear the port for another call.
This feature is active on all voice calls. The
LCD of a station which is disconnected from
a CO line by the AR signal will display, "CO
LINE HANG UP" and the station will receive
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