NT5K21XMFC/MFE card Page405 of 544
Option11C and 11C Mini TechnicalReference Guide
Table 1 26
XMFC receiver specifications
Input sensitivity:
accepted:
rejected:
-5 to -31.5 dBmO New CCITT spec.
-38.5 dBmO Blue Book
Bandwidth twist:
accepted:
rejected:
fc +/- 10 Hz
fc +/- 60 Hz
Amplitude twist:
accepted:
Norwegian requirement
rejected:
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
Operating time: < 32 msec.
Release time: < 32 msec.
Tone Interrupt no release: < 8 msec. Receiver on, while tone missing
Longest Input tone ignored: < 8 msec. Combination of valid frequencies
Noise rejection: S/N > 18 dB No degradation, in band white noise
S/N > 13 dB Out-of-band disturbances for CCITT