Telephone Speaker Off-Hook Call Announce Upgrade (Dvsu); System Connection - Toshiba STRATA DK14 Installation And Maintenance Manual

➤
To toggle full/half-duplex mode
➤
Press button 10 (see
Figure 11-6) to turn
full-duplex mode On
or Off.
Notes
Button 10 functions the same for Internal and/or External Microphone.
G
If DIP switch 6 and 7, in Figure 12, are turned Off, the Full/half-duplex function of Button 10
G
is disabled and Button 10 will function as programmed in Program 39 of system/station
Programming.
The DKT2020-FDSP's full-duplex operation depends on the speaker volume setting. Raising
G
or lowering the speaker volume directly affects the performance of the full-duplex operation.
Important!
o If raising or lowering the volume does not improve performance, switch to half-duplex mode
by pressing Key 10.
o If both you and the distant party are using full-duplex speakerphones, the sensitivity to both
echo paths may cause a reduction or instability of volume. If this happens, it may be necessary
to switch to half-duplex mode by pressing key 10.

Telephone Speaker Off-hook Call Announce Upgrade (DVSU)

To receive Speaker Off-hook Call Announce (OCA) calls over the digital telephone speaker, a
digital telephone must be upgraded with a DVSU; the telephone making the call does not require a
DVSU. In a DK system with release 3 and above software, a DVSU is not required to receive OCA
in the telephone handset or headset. An additional wire pair is not required for digital telephones
that receive Speaker OCA calls. The DVSU is compatible with both 2000-series and 1000-series
digital telephones.
Notes
Digital telephones cannot be equipped with a DVSU and integrated data interface unit (PDIU-
G
DI, RPCI-DI or PDIU-DI2) or DADMs at the same time.
Program 03, Code 62 or 64 must be set for the PDKU and Code 28 for the RDSU for
G
telephones that are to receive Speaker OCA and Program 31 LED 03 must be turned ON for
telephone ports.
DVSU is not necessary to receive handset OCA.
G

System Connection

Digital Telephones
The following provides information on how to connect digital telephones to the DK system.
Before proceeding, see warning and caution notes in
Note
11-3.
Digital telephones connect to the digital telephone ports via the MDF with standard twisted-pair
jacketed telephone cable. If using 24 AWG cable, single-pair wiring is sufficient in most cases for
digital telephones to operate effectively at up to 1000 feet from the system.
Strata DK I&M 6/00
Full-duplex mode: Button 10 LED Off.
Half-duplex mode: Button 10 LED On.
Station Apparatus
"Telephone Installation" on Page
Dip Switches
11-9