Lucent Technologies lucent ユーザーズマニュアル
DEFINITY Enterprise Communications Server Release 6
Maintenance for R6vs/si
Maintenance for R6vs/si
555-230-127
Issue 1
August 1997
Maintenance Architecture
Page 1-16
Protocols
1
Quantization Distortion Loss
analog port.
digital port and digital port to analog port.
Terminating Impedance: 600 Ohms nominal
Trunk balance impedance (selectable): 600 Ohms nominal or complex Z [350 Ohms + (1
k Ohms in parallel with 0.215uF)]
Trunk balance impedance (selectable): 600 Ohms nominal or complex Z [350 Ohms + (1
k Ohms in parallel with 0.215uF)]
Impulse Noise
On 95% or more of all connections, the impulse noise is 0 count (hits) in five
minutes at +55 dBrnC (decibels above reference noise with C-filter) during the
busy hour.
minutes at +55 dBrnC (decibels above reference noise with C-filter) during the
busy hour.
Table 1-10.
Quantization Distortion Loss
Analog Port-to-Analog Port
Signal Level
Distortion Loss
0 to -30 dBm0
>33 dB
-40 dBm0
>27 dB
-45 dBm0
>22 dB
Table 1-11.
Quantization Distortion Loss
Analog Port-to-Digital Port or
Digital Port-to-Analog Port
Digital Port-to-Analog Port
Signal Level
Distortion Loss
0 to -30 dBm0
>35 dB
-40 dBm0
>29 dB
-45 dBm0
>25 dB