Zyxel IES-1000 EE [319/368] Singapore

Zyxel IES-1000 EE [319/368] Singapore
Appendix A PSTN Parameters by Country
VOP1224-61 User’s Guide
319
Tones parameters:
dial tone: 350+440Hz -18.0dB continuous
ring back tone: 440+480Hz -18.0dB on 0.400s off 0.200s
440+480Hz -18.0dB on 0.400s off 3.000s
busy tone: 480+620Hz -18.0dB on 0.500s off 0.500s
congestion tone: 480+620Hz -18.0dB on 0.250s off 0.250s
call waiting tone #1: 450Hz -18.0dB on 0.400s off 4.000s
call waiting tone #2: 450Hz -18.0dB on 0.400s off 4.000s
special dial tone: 350+440Hz -18.0dB on 0.100s off 0.100s
howler tone: 1400+2060+2450+2600Hz -3.0dB on 0.100s off 0.100s
warning tone: 1400Hz -18.0dB on 0.500s off continuous
confirmation tone: 350+440Hz -18.0dB on 0.100s off 0.100s
350+440Hz -18.0dB on 0.100s off 0.100s
350+440Hz -18.0dB on 0.100s off continuous
holding tone: 440+480Hz -18.0dB on 0.500s off 0.500s
350+440Hz -18.0dB on 0.500s off 2.500s
Singapore
Country Code: 28,Singapore
law: alaw
impedance: 600ohm
loop current: 25 mA
tax type: metering
Ring parameters:

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