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Specifications Passport 4400 Hardware Installation Manual
C-5
Maximum Output
Level:
+7 dB, E&M 4-wire enhanced only.
All others 0 dB.
Longitudinal Balance
200 to 1004 Hz
1005 to 3404 Hz:
>58 dB
>
48 dB
Frequency Response
Over the Range of 304
Hz to 3404 Hz:
+1 dB to -3 dB with respect to 1004 Hz for G.729
digitizing rates; +1 dB to -2 dB with respect to 1004
Hz, for all other digitizing rates
Idle Channel Noise
Inband
"C" Message:
PSofometric:
Out of Band,
10 KHz-10 MHz
Transverse
or
Longitudinal Noise:
<20 dBrnc
<
-65 dBmpo
<
-70 dBm
Non Linear Distortion,
(Multitone Signal)
Second and Third
Harmonics:
<40 dB below signal level
Signal-to-Noise Ratio at
1004 Hz:
>35 dB
Echo Suppression: >35 dB
Echo Canceling
FXS, FXO, E&M 2-wire:
<16 ms or <1000 Km (600 miles)
Crosstalk (Near/Far
End) Between
Channels:
<75 dB