Nortel Circuit Card Installation Manual page 374

Page 374 of 906
XMFC sender and receiver specifications
Table 143
XMFC sender specifications
Forward frequencies in DOD mode:
Backward frequencies in DOD mode:
Frequency tolerance:
Power level at each frequency:
Level difference between frequencies:
Harmonic Distortion and Intermodulation
Time interval between start of 2 tones:
Time interval between stop of 2 tones:
Table 144
XMFC receiver specifications (Part 1 of 2)
Input sensitivity:
accepted:
rejected:
Bandwidth twist:
accepted:
rejected:
Amplitude twist:
accepted:
Norwegian requirement
rejected:
Operating time:
Release time:
553-3001-211 Standard 3.00
NT5K21 XMFC/MFE card
Table 143 and Table 144 provide the operating requirements for the NT5K21
XMFC/MFE card. These specifications conform to CCITT R2
recommendations: Q.441, Q.442, Q.451, Q.454, and Q.455.
-5 to -31.5 dBmONew CCITT spec.
-38.5 dBmOBlue Book
fc +/- 10 Hz
fc +/- 60 Hz
difference of 5 dB between adjacent frequencies
difference of 7 dB between non-adjacent frequencies
difference of 12 dB (for unloaded CO trunks)
difference of 20 dB between any two frequencies
< 32 msec.
< 32 msec.
August 2005
1380, 1500, 1620, 1740, 1860, 1980 Hz
1140, 1020, 900, 780, 660, 540 Hz
+/- 0.5 Hz from nominal
Selectable: 1 of 16 levels
< 0.5 dB
37 dB below level of 1 signaling frequency
125 usec.
125 usec.