Nortel Networks 311 XMFE sender and receiver specications

Sender and receiver mode 369
Table165
XMFC sender specifications
Forward frequencies in DOD mode: 1380, 1500, 1620, 1740, 1860, 1980 Hz
Backward frequencies in DOD mode: 1140, 1020, 900, 780, 660, 540 Hz
Frequency tolerance: +/- 0.5 Hz from nominal
Power level at each frequency: Selectable: 1 of 16 levels
Level difference between frequencies: < 0.5 dB
Harmonic Distortion and Intermodulation 37 dB below level of 1 signaling frequency
Time interval between start of 2 tones: 125usec.
Time interval between stop of 2 tones: 125 usec.
Table166
XMFC receiver specifications
Input sensitivity:
accepted:
rejected: -5 to -31.5 dBmONew CCITT spec. -38.5 dBmOBlue Book
Bandwidth twist:
accepted:
rejected: fc +/- 10 Hz fc +/- 60 Hz
Amplitude twist:
accepted: difference of 5 dB between adjacent frequencies
difference of 7 dB between non-adjacent frequencies
Norwegian requirement
rejected: 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
XMFE sender and receiver specifications
Table167 "XMFE sender specifications" (page 370) and Table 168
"XMFE receiver specifications" (page 370) provide the operating
requirements for the XMFC/MFE card when it is configured as an XMFE
card. These requirements conform to French Socotel specifications
ST/PAA/CLC/CER/692.
Nortel Communication Server 1000
Circuit Card Reference
NN43001-311 01.04 Standard
Release 5.0 23May 2008
Copyright© 2003-2008, Nor tel Networks
.