Nortel Networks Circuit Card - Manual (Page 697)

NTAG26 XMFR card Page 697 of 906
Circuit Card Description and Installation
XMFR receiver specifications
Table 220 provides the operating requirements for the NTAG26 circuit card.
Table 220
XMFR receiver specifications (Part 1 of 3)
Coding: Mu-Law
Input sensitivity: must accept: 0 to -25 dBmO
must reject: -35 to dBmO
Frequency sensitivity: must accept: f +/- (1.5% + 5Hz)
Amplitude Twist: must accept: difference of 6dB between frequencies
Signal Duration: must accept: > 30 ms
must reject: < 10 ms
KP Signal Duration: must accept: > 55 ms
may accept: > 30 ms
must reject: < 10 ms
Signal Interruption Bridge: must ignore: < 10 ms
Time Shift between 2 frequencies:
(Envelop for start/stop)
must accept: < 4 ms
Coincidence between 2 frequencies: must reject: < 10 ms
Intersignal Pause: must accept: > 25 ms
Maximum Dialling Speed: must accept: 10 signals per second