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DEFINITY Enterprise Communications Server Release 5
Maintenance and Test for R5vs/si
555-230-123
Issue 1
April 1997
Maintenance Architecture
Page 1-16Protocols
1
Quantization Distortion Loss
Table 1-10 lists the quantization distortion loss in the system for analog port to
analog port.
Table 1-11 lists the quantization distortion loss in the system for analog port to
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)]
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.
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
Signal Level Distortion Loss
0 to -30 dBm0 >35 dB
-40 dBm0 >29 dB
-45 dBm0 >25 dB