Vizio EXES-6000 CP-64 PV Type, Hands-free Substation Model HF-620S/630S/631S/640S

4) Hands-free Substation Model (HF-620S/630S/631S/640S) PV Type

		Speaker
Speaker volume switch		In-use lamp
		Privacy switch
		Dial keys
Microphone		key	HF-640S
	HF-620S		HF-630S
			HF-631S

<Making a call >

1.Touching the key makes a call to the designated other station whether the Privacy switch on your station is in the ON position or OFF position.

2.Start conversation after the calling tone stops.

3.When the line is busy, a busy tone is heard and you can camp on the line by simply waiting. As soon as the line becomes free, your call is automatically connected.

4.During a call attempt made by means of the continu- ous calling tone or the Privacy tone, you can break in on the calling tone by continuously depressing the

key to make a voice call through the station speaker of the called party.

5.When the party you call is in a high noise level area,

your continuously depressing the key allows one-way conversation to that party. As long as you

depress the key, your voice has dominance

and releasing the key will reverse the one-way conversation from that party to you.

6.To terminate the conversation, depress the key.

< Responding to a call >

[In the case that the Privacy switch is in the OFF

position.]

7. Respond to the call after the calling tone stops.

[In the case that the Privacy switch is in the ON posi- tion.]

8.A brief Privacy tone sounds from your station each time there is an incoming call, and all incoming calls are refused.

To respond, touch dial the or key while the line is connected between you and the calling party.

Note.

1.The sound volume of the speaker may be adjusted by means of the 2-stage volume selector (VOL) switch.

2.The HF-640S is fitted with no Privacy switch, nor

key, nor key.

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