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1.5
TECHNICAL FEATURES OF THE SERIES 227A1 TELEPHONES
The telephones operate without any modification to the PSTN lines. For perfect operation with a switch, it is
necessary to ensure that the following characteristics match those of the switch.
In a case of incompatibility, special software can be provided. Contact the manufacturer for more
information.
• Ringing voltage
Ringing duration = 1.5s + 0.5s
Pause duration: 3s + 2s
• Current in the telephone (off-hook position 35mA (20Ma minimum)
• Voltage on the telephone terminals
(on-hook position)
• Dialling system
• Dialling tone
• Busy tone
Sequence of beeps and pauses for more
than 10 seconds
Beep: 100ms to 600ms
Pause: 100ms to 600ms
• Remote Ringing Tone Return
Sequence of beeps and pauses until off-
hook
Beep: 0.2 sec to 1,6 sec.
Beep + Pause: <6 sec
• Cleardown Tone
Sequence of beeps and pauses for more
than 10 seconds
Beep: 100ms to 600ms
Pause: 100ms to 600ms
1.6
SPECIAL CONDITIONS OF USE
227A1 telephone set should be connected on a network line with the following particulars :
Ø Maximum voltage of use :
Ø Maximum delivered current :
Ø Maximum delivered power :
NFC227A*TEL2
\\SERVEUR MAX\\ Notices NFC \ NFC227 TL2 \ NFC227A-TEL2.DOC
All manuals and user guides at all-guides.com
> 35 V
eff
Imax = 0.05 A
Imax = 0.08A
48V (24V minimum) Umax = 60V
DTMF or pulse
Frequency: 270Hz to 540Hz
Detection time min 2 sec
Frequency: 300Hz to 500Hz
Detection time 4-10sec
Must be equal to beep value
Frequency: 350Hz to 500Hz
Frequency: 300 to 500Hz
Detection time 4-10 sec
Must be equal to beep value
36 /64
< U sonnerie < 80V
CA 25 ou 50Hz
eff
; Pmax = 1W
eff
; Pmax = 1.2W
DC
Umax. = 60Vdc
Imax. = 80mA
Pmax. = 1.2W
DC
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