Fermax PBX EA, User And Installation Manual

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2.3. Person Inside Object
The person inside object is considered a person that is in phone contact with
DoorPhone.
Outgoing Call
The outgoing call is the call from DoorPhone (caused by visitor). After guard choice
the telephone is ringing inside object and the pickuping up will allow speaking to the
visitor at door. The code choice can close the switch, if set to m=1 or m=5 modes,
change over the Day/Night modes and hang up the DoorPhone. The DoorPhone in 10
seconds before call end will send a notice about call end and the call may be extended
by sign selection (* or #). The telephone hanging up will end the call.
They are two possible means transmission information of push buttons (command for
opening lock, switch-over day/night, prolongation conversation, command for hang-
up) - by either in "RTP channels" or in "SIP info", variant "inband DTMF" isn't in IPDP
decoding.
Incoming Call
The incoming call is the call to the DoorPhone (caused by person inside object). After
exchange number selection, where the DoorPhone is connected, the DoorPhone is
ringing and when set number of rings is over, the DoorPhone will pick up and it is
possible to speak. The possibilities are the same as with outgoing call.