Toshiba CTX28 manual Telephone Speaker Off-hook Call Announce Upgrade Bvsu, 11-5

Station Apparatus

3000-series Telephone Option PCBs

Telephone Speaker Off-hook Call Announce Upgrade (BVSU)

To receive Speaker Off-hook Call Announce (OCA) calls over the digital telephone speaker, a digital telephone must be upgraded with a BVSU; the telephone making the call does not require a BVSU. Digital telephones do not require an additional wire pair to receive Speaker OCA call. The BVSU is not necessary to receive handset OCA.

BVSU Upgrade Installation for DKT3000-series Telephones

1.Loosen the four captive screws on the telephone base and remove the base (see Figure 11-2).

2.On the BVSU (see Figure 11-1, set strip pins SW1 and SW2 per Table 11-5.

HFU

SW2

SPF

	20 Mu
20 A	30

SW1

BVSU1A

			6068
	Figure 11-1 Speaker Off-hook Call Announce Upgrade (BVSU1A)
Table 11-5 BVSU Jumper Settings
	Control/Indicator/	Type of Component	Description
	Connector
			30 (default) - use for DKT3000 telephones.
	SW1	6-terminal jumper plug	20 Mu - use for DKT2000 telephones in Mu Law
			countries, including U.S. and Canada.
			20A - use for DKT2000 in A Law countries.
			SPF (default setting). Use for all DKT3000
	SW2	3-terminal jumper plug	DKT2000 telephones, except the DKT2010-H.
			HFU - use for DKT2010-H telephones.

3.Slide the BVSU under the tabs.

4.Position the BVSU holes over the standoffs and secure with the two provided screws. (Two large head screws for DKT3000s, four smaller head crews for the DKT2000.)

5.Connect the BVSU wire plugs to the two “PCI/VSU” connectors on the PCB inside the phone, with the red wire on the side where “RED” is silk-screened on the DKT PCB (see Figures 11-7and 11-8).

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

Station Apparatus

Strata CTX I&M 06/04 11-5