ZyXEL Communications MSC1024G Series User Manual page 1004

Appendix A PSTN Parameters by Country
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
ring back tone: 425Hz -18.0dB on 1.000s off 3.000s
busy tone: 425Hz -18.0dB on 0.500s off 0.500s
congestion tone: 425Hz -18.0dB on 0.167s off 0.167s
call waiting tone #1: 1400Hz -18.0dB on 0.175s off 0.175s
1400Hz -18.0dB on 0.175s off 3.500s
call waiting tone #2: 1400Hz -18.0dB on 0.175s off 0.175s
1400Hz -18.0dB on 0.175s off 3.500s
special dial tone: 425Hz -18.0dB on 1.000s off 0.250s
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: 1400Hz -18.0dB on 0.400s off 15.000s
Bulgaria
Country Code: 5,bulgaria
law: alaw
impedance: 220ohm_820ohm_120nf
1004
MSC1000G/1024G/1224G Series User's Guide