Aiphone MASTER STATION AI-MS900, Instruction Manual, Page: 10 / 16

10
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
heard at the master station.
(2) "Press-to-talk" control conversation ("PTT" in the
table below)
The [PTT] key is pressed to talk, and released to
listen.
(3) Duplex conversation
Similar to the method of a standard telephone.
The following table shows the conversation modes for all of the various station combinations.
Quick reference of conversation methods
VOX: Voice-operated switching conversation
PTT: "Press-to-talk" control conversation
Duplex: Simultaneous conversation
One-way conversation
One-way conversation
Substation
Master station
Telephone
Handset off-hook
Handset on-hook
Substation
–
Master Station
Off-hook On-hook
VOX/PTT PTT
Duplex Duplex
PTT
Telephone
VOX
Duplex
VOX
Duplex
One-way conversation
PTT
Simultaneous conversation