External Power Straps; Dkt2000 Adm Installation; Electronic Telephone Upgrades; Off-Hook Call Announce Upgrade (Hvsu2 Or Hvsu/Hvsi) - Toshiba strata CT Installation & Maintenance Manual

Station Apparatus

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 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.
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.
➤
To cut the straps
See
1.
2.
3.

DKT2000 ADM Installation

See "Digital Add-on Module Installation" on Page 5-26 for more
H

Electronic Telephone Upgrades

This section describes how to upgrade and configure electronic telephones for features and
options.
C

Off-hook Call Announce Upgrade (HVSU2 or HVSU/HVSI)

Electronic telephones must be equipped with either the HVSU2 subassembly or the
combined HVSU and HVSI subassemblies to receive Speaker Off-hook Call Announce
(OCA) calls. These telephones also require three-pair wiring to receive speaker OCA, instead
of the standard two-pair. Telephones making speaker OCA calls do not require an upgrade or
extra wire pair.
Notes
G
5-16
Figures 5-1 and 5-7~5-8
Loosen the four captive screws on the telephone base and remove the base.
Depending on the telephone, locate the W101 and W102 external power straps and cut
them.
Reinstall the telephone base, and secure it with its four captive screws.
Handset OCA is not available on electronic telephones.
and follow these steps:
information..
Strata CT I&M Manual October 2000