Meridian Nortel 1 Option 11C Technical Reference Manual page 411

XMFR receiver specifications
Table 131
XMFR receiver specifications (Part 1 of 3)
Coding:
Input sensitivity:
Frequency sensitivity:
Amplitude Twist:
Signal Duration:
KP Signal Duration:
Signal Interruption Bridge:
Time Shift between 2 frequencies:
(Envelop for start/stop)
Table 131 provides the operating requirements for the NTAG26 circuit card.
NTAG26 XMFR card
Mu-Law
must accept: 0 to -25 dBmO
must reject: -35 to dBmO
must accept: f +/- (1.5% + 5Hz)
must accept: difference of 6dB between frequencies
must accept: > 30 ms
must reject: < 10 ms
must accept: > 55 ms
may accept: > 30 ms
must reject: < 10 ms
must ignore: < 10 ms
must accept: < 4 ms
Option 11C and 11C Mini
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Technical Reference Guide