Zyxel-communications Multi-service Access Platform MSAP2000 Uživatelský manuál stáhnout pdf (Strana 239)

11. System Parameter Specification

MSAP2000 Technical Manual V3.0 11-10

Parameters FXO-P (COT) FXS-P (RT)

Net Loss 20±75 dB

End-to-End Return

Loss

300 ~ 600 Hz: > 12 dB

600 ~ 3400 Hz

: > 15 dB

Longitudinal

Conversion Loss

300 Hz ~ 600 Hz: > 40 dB

600 Hz ~2400 Hz: > 46 dB

2400 Hz ~3400 Hz: > 41 dB

Attenuation/Frequency

Distortion

Please refer to Figure 11-A

Group Delay Distortion

with Frequency

Please refer to Figure 11-B

Idle Channel Noise < - 65 dBm0p

Signal-to-total

Distortion Ratio

Please refer to

Figure 11-C

Gain Variation of Input

Signal Level

Please refer to Figure 11-D

Inter-channel Crosstalk < -65dBm0

(the Input Test Signal is 1020Hz, 0

dBm0)

Spurious In-band

Signals

Less than –40 dBm0

Link Performance

(Table 11-D)

Spurious Out-band

Signals

Less than –25 dBm0

Impulse Noise Less than 15 occurrences within 1

15-minute interval, at a threshold value

of 47 dBrnC0

V.34 Modem

Transmission

Performance

When the input signal level is -10dBm,

the transmission speed is≧31.2Kbit/s,

with the BER ≦10-7

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