ZyXEL Communications MSC1024G Series User Manual page 1005

Appendix A PSTN Parameters by Country
loop current: 25 mA
tax type: metering
Ring parameters:
frequency: 20.0 Hz
amplitude: 53.0 Vrms
onTime1: 2.00 seconds
offTime1: 4.00 seconds
onTime2: 2.00 seconds
offTime2: 4.00 seconds
Pulse parameters:
flashMin: 90 ms
flashMax: 500 ms
breakMin: 47 ms
breakMax: 80 ms
makeMin: 30 ms
makeMax: 55 ms
interDigitMin: 250 ms
Meter parameters:
frequency: 12 kHz
onTime: 200 ms
offTime: 200 ms
Caller ID parameters:
CID type: prior ring
payload type: ETSI-MDMF
first TAS type: DT-AS
second TAS type: NULL
first TAS interval: 300 ms
second TAS interval: 0 ms
start to ring: 400 ms (prior ring only)
Tones parameters:
dial tone: 425Hz -18.0dB continuous
1005
MSC1000G/1024G/1224G Series User's Guide