Toshiba CTX28 manual External Power Straps, 11-51

Station Apparatus

2000-series Telephones

Busy Override and Camp-on Ring Tone Over Handset/Headset Option

Busy override and camp-on ring tones can be sent over the DKT handset or headset, in addition to the speaker.

To send busy override/camp-on ring tones over the handset of the DKT2010-H model

1.Loosen the four captive screws on the telephone base (Figure 11-24), and remove the base.

2.Install a strap in the HS-BOV W409 location (see Figure 11-34).

3.Reinstall the telephone base.

To send busy override/camp-on ring tones over the handset/headset of the DKT2010-SD/ 2020-S/2020-SD

Hold down the Redial button and press the Vol ▲ button.

To block the tone over the handset/headset of the DKT2010-SD/2020-S/2020-SD

Hold down the Redial button and press the Vol ▼ button.

Note 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 telephone. (See Figures 11-32, 11-34and 11-35).

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 (see Chapter 4 – Strata CTX670 Installation for more information).

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 Figures 11-24and 11-34~11-35and follow these steps:

1.Loosen the four captive screws on the telephone base and remove the base.

2.Depending on the telephone, locate the W101 and W102 external power straps and cut them.

3.Reinstall the telephone base, and secure it with its four captive screws.

Note Refer to Chapter 10 – MDF PCB Wiring for external AC/DC power supply ordering information and installation instructions.

Station Apparatus

Strata CTX I&M 06/04 11-51