Aiphone AI-MS900 instruction manual Conversation Method, Voice-operated switching conversation VOX

8.4. Conversation Method

There are three different conversation methods possible when the master station is used. The conversation method is determined by the other party's station type and handset use.

(1)Voice-operated switching conversation ("VOX" in

the table below)
When both parties are talking coincidentally, the
master station's (telephone's) party voice is
transmitted to the substation. If the master station's
party stops talking, the substation's party voice can be	One-way conversation
heard at the master station.

One-way conversation

(2)"Press-to-talk" control conversation ("PTT" in the

table below)

The [PTT] key is pressed to talk, and released to listen.

One-way conversation

PTT

(3)Duplex conversation

Similar to the method of a standard telephone.

Simultaneous conversation

The following table shows the conversation modes for all of the various station combinations.

Quick reference of conversation methods

		Substation	Master Station		Telephone
			Off-hook	On-hook
Substation		–	VOX/PTT	PTT	VOX
Master station	Handset off-hook		Duplex	Duplex	Duplex
	Handset on-hook			PTT	VOX
Telephone					Duplex

VOX: Voice-operated switching conversation

PTT: "Press-to-talk" control conversation

Duplex: Simultaneous conversation

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