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NetEngine IAD User Guide
Country
Codes Tables
This appendix specifies the settings for each country code setting
supported by the IAD. When you select a specific country mode, the
values are set automatically.
B. Country Codes
Table B–1. Country Code Settings—USA, Australia 1 and 2, and Germany
Parameters USA Australia1 Australia2 Germany
Min. Flash Hook (ms) 300 40 40 90
Max. Flash Hook (ms) 1550 140 140 130
Ring Frequency (Hz) 20 25 25 25
Receive Gain (dB) -2 0 0 0
Transmit Gain (dB) -4 -7 -7 -7
Ref/Input Impedance
(Ohms)
600 200 + (820 // 120nF) 600 220 + (820 // 115nF)
Load Impedance
(Ohms)
600 200 + (820 // 120nF) 600 220 + (820 // 115nF)
Table B–2. Country Code Settings—France, ETSI, United Kingdom, and Belgium1
Parameters France ETSI
United
Kingdom
Belgium1
Min. Flash Hook (ms) 90 90 90 90
Max. Flash Hook (ms) 130 130 130 130
Ring Frequency (Hz) 50 25 25 25
Receive Gain (dB) -1.9 0 1 0
Transmit Gain (dB) -8.9 -7 -6 -7
Ref/Input Impedance
(Ohms)
220 + (820 //
115nF)
270 + (750 //
137nF)
300 + (1000 //
220nF)
150 + (830 //
72nF)
Load Impedance
(Ohms)
600 270 + (750 //
137nF)
370 + (620 //
310nF)
150 + (830 //
72nF)