GAI-TRONICS
VoIP Telephone Configuration Guide
Page 7 of 78
•
Call terminates when the called party hangs up or if an ON/OFF button is
pressed.
Receiving a call (with autoanswer OFF. See below for the behaviour when each
different autoanswer mode is enabled)
•
Ringing heard from speaker
•
Press any memory dial button or an ON/OFF button to answer call
•
Normal voice call
•
Call terminates when the calling party hangs up or if an ON/OFF button is
pressed
Autoanswer modes
•
Preceding Tone
o
The telephone rings (using its default ring tone) before automatically
starting a normal 2-way voice call.
o
The number of rings is set by the parameter
phone_autoanswer_ring_count.
o
If the ring tone is continuous (ie has no OFF duration), the tone will play
for a fixed period of time equal to phone_autoanswer_ring_count x 10ms.
•
Silent Answer
o
The telephone will start a normal 2-way voice call immediately with no
preceding tone.
•
Babyphone Mode
o
The telephone will start a listen-only call immediately with no preceding
tone and no voice reception from the calling party.
o
The telephone’s speaker is muted
•
Page Mode
o
The telephone rings (using its default ring tone) before automatically
starting a receive-only voice call
o
The telephone’s microphone is muted and the speaker volume is set to
maximum
o
The number of rings is set by the parameter
phone_autoanswer_ring_count.
o
If the ring tone is continuous (ie has no OFF duration), the tone will play
for a fixed period of time equal to phone_autoanswer_ring_count x 10ms.
•
Off
o
The telephone will not autoanswer incoming calls
3.2
Dictionary of terms
Busy tone
A tone played to the user to indicate that a call has failed because the called party is engaged
Call progress tone
One of a number of different tones played to the user to indicate the status of a call. Dial
tone, busy tone and NU tone are all examples of call progress tones.
Confidence tones
Tones played to the user to indicate that dialling is in progress, by imitating DTMF tones used
by analog telephones.
Dial tone
A tone played to the user to indicate that the telephone is ready to dial
– ie it is off hook and
waiting for a button to be pressed to initiate a call.
Dialling
Used to describe the process of initiating a call, usually by pressing a memory button or a
series of digit buttons.
DTMF
Standing for “dual tone multi-frequency”, the dialling digit tones produced by a touch-tone
phone. Commonly used for signalling in analogue systems.