Parameter

Parameter

Frequency range

Line Impedance

600Ω

0.2kHz-4kHz

CO impedance

600Ω

0.2kHz-4kHz

RT impedance

600Ω

0.2kHz-4kHz

VDSL port termination ZHP-c

100Ω//0.47mH

VDSL modem impedance

100Ω

25kHz-30MHz

Nominal Voice Band

0.3 kHz-3.4 kHz

Ringing frequency

25-50 Hz

VDSL2+Band

25kHz-30MHz

DC series resistance

<25Ω

DC

DC insulation resistance( tip & ring)

>5MΩ

DC

DC insulation resistance ( tip,ring and ground)

>20MΩ

DC

Maximum DC loop current

100mA

DC

Maximum differential voltage

250V

DC

Maximum AC voltage

100 Vrms

Nominal Signal

21 mVpp to 5.4 Vpp

Ringing Signal

100 Vrms

Impedance for Ring Signal

>40kΩ

25-50 Hz

Pulse metering tone

10 Vpp to 30.2 Vpp

16 kHz

Insertion Loss for Metering Signal

<3 dB

16 kHz

Insertion Loss in Voice Band

<0.3dB

1 kHz

Distortion of insertion Loss(relative to 1 kHz)

<+/-0.3 dB

0.2 kHz-4 kHz

Stop band attenuation in VDSL Band (600Ω)

>55 dB

25kHz-30MHz

Return Loss in Voice Band

>18 dB

0.5 kHz-2 kHz

>14+18.05 log(f/300) dB

300 Hz-500 Hz

>18-17.35 log(f/2000) dB

2 kHz-3.4 kHz

Intermodulation distortion

2nd,3 rdharmonic distortion products:>57 dB,60

4 tone method

Delay distortion

<150μs

0.2 kHz-4 kHz

Longitudinal conversion loss at LINE and POST ports

>40dB

15 Hz-50 Hz

>46dB

50 Hz-600 Hz

>52dB

0.6 kHz-3.4 kHz

Loading of the VDSL signal path (100Ω)

>0.3dB

25kHz-30MHz