External Power Straps - Toshiba Strata DK 280 Installation Manual

2. For 2000-series digital telephones, refer to Figures
5-7 or 5-8, and cut the beep strap.
-or-
For lOOO-series digital telephones, refer to Figure
5-9, and cut the beep strap.
3. Reinstall the telephone base, and secure it with its
four captive screws.
5.3.7 Microphone/Speaker Sensitivity
Adjustment (Speakerphones Only)
High ambient noise levels may cause the speaker on
some digital telephone speakerphone models to cut
off frequently. To prevent this for the IOOO-series
digital telephone models, perform the following
procedure to make the telephones less sensitive to the
noise: (The 2000-series telephones are adjusted per
the instructions in the note after the procedure.)
1. Loosen the four captive screws securing the IOOO-
series digital telephone speakerphone base
(Figure 5-i), and remove the base.
2. For the lOOO-series speakerphone model
(DKT1020-SD), refer to Figure 5-9, and locate the
room noise switch. Push the switch carefully to the
H (high) position (for low sensitivity) when there is
high background noise in the area surrounding the
telephone.
3. Reinstall the telephone base, and secure it with its
four captive screws.
Notes:
1. To make the 2000-series digital telephone
speakerphone models less sensitive to
loud surrounding noise, hold down Mic
button, then press the VolA button. The
less-sensitive level will be set after the
third flash of the Mic LED. To reset the
sensitivity back to the normal level, hold
down the Mic button, then press the
Vol V button. The normal level will be set
after the third flash of the Mic LED.
2. On 2000-series digital telephone
speakerphone models that are set for low
sensitivity, the Mic LED will flash at the in-
use rate when using the speakerphone.
When set to normal sensitivity, the Mic
LED will be on steady when using the
speakerphone.
5.3.8 Busy Override and Camp-on Ring Tone
Over Handset/Headset Option -
The busy override and camp-on ring tones can be
sent over the telephone handset or headset, in
addition to the speaker, with 2000-series digital
telephones. The tones only sound over the speaker
with lOOO-series digital telephones. Perform the
following procedure to have these tones sent over the
handset of the DKT2010-H model. (For the DKT2010-
SD, DKT2020-S, and DKT2020SD models, see the
note following the procedure.)
1.
2.
3.
Loosen the four captive screws securing the
telephone base (Figure 5-l), and remove the
base.
Refer to Figure 5-7, and install a strap in the HS-
BOV W409 location.
Reinstall the telephone base, and secure it with its
four captive screws.
Notes:
1. To enable busy override tone and camp-
on ring tones over the handset or headset
of a DKT2010-SD, DKT2020-SD,
DKT2020-S mode/, hold down the Redial
button and press the VolA button. To
block the tone, ho/d down the Redial
button and press the VOW button.
2. For this to function properly with
headsets, make sure the speaker OCA
strap or R607 is cut on the HHEU PCB
and the HHEU strap is cut on the i
telephone (see Subsection 5.3.4,
paragraph 2).
5.3.9 External Power Straps
Digital telephones equipped with options such as
integrated data interface units and ADMs require two-
pair wiring or external power to operate efficiently at
the maximum-allowed distance from the key service
unit (KSU). Two-pair wiring or external power is also
necessary for maximum cable run lengths for digital
telephones that are connected to systems that must
operate with reserve power. (See Table 7-4 in Chapter
7-Wiring Diagrams for reference.)
Each digital telephone has two external power straps
which must be cut for external power when the cabling
of the telephone is connected to an external AC/DC
power supply. Cut these straps in accordance with the
following procedure:
5-10 January 1996