Instruction manual

TECHNICAL SPECIFICATIONS
Analog Transmission Characteristics (Contd)
Quantization Distortion:
SIGNAL LEVEL
DISTORTION LEVEL
+2 to -30 dBm0
35 dB
-40 dBm0 29 dB
-45 dBm0 25 dB
Sampling Rate:
8 kHz
Terminating Impedance:
600 ohms
Trunk Balance Impedance:
600 ohms or Complex Z (selectable)
Echo Return Loss:
The echo return loss of the switching equipment is infinite. The echo return loss of the
station equipment can be engineered for greater than 18 dB over the range of 500 Hz to
2500 Hz.
Loop Resistance:
● TN742—Loop resistance of up to 1300 ohms, including the station
● ZTN78—Loop resistance of up to 100 ohms not including the station
(2000 feet with No. 24 AWG.)
Connection Bandwidth: 64 Kbits
Steady State Noise Level:
The steady state noise level presented to any busy path does not exceed 23 dBrnc
during the busy hour.
Impulse Noise:
The impulse noise is 0 count (hits) in 5 minutes at +55 dBrnc during the busy hour
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