Meridian Nortel 1 Option 11C Technical Reference Manual page 405

Table 126
XMFC receiver specifications
Input sensitivity:
accepted:
rejected:
Bandwidth twist:
accepted:
rejected:
Amplitude twist:
accepted:
Norwegian requirement
rejected:
Operating time:
Release time:
Tone Interrupt no release:
Longest Input tone ignored:
Noise rejection:
NT5K21 XMFC/MFE card
-5 to -31.5 dBmO New CCITT spec.
-38.5 dBmO Blue 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.
< 8 msec. Receiver on, while tone missing
< 8 msec. Combination of valid frequencies
S/N > 18 dB No degradation, in band white noise
S/N > 13 dB Out-of-band disturbances for CCITT
Option 11C and 11C Mini
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Technical Reference Guide