Nortel Networks Circuit Card - Manual (Page 698)

Page 698 of 906 NTAG26 XMFR card
553-3001-211 Standard 3.00 August 2005
Noise Rejection:
Error Rate in White Noise Better than: < 1/2500 calls
Test:
10 digit calls
nominal frequency @ -23 dBmO
ON/OFF = 50 ms/50ms
KP duration 100 ms
SNR = -20 dB
all digits
Immunity to Impulse Noise Better than: < 1/2500 calls
Test:
10 digit calls
nominal frequency @ -23 dBmO
ON/OFF = 50ms/50ms
KP duration 100 ms
SNR = -12 dBs
all digits
ATT Digit Simulation Test, Tape #201 from PUB
56201
Error Rate from Power Lines Better than: < 1/2500 calls
Test:
10 digit calls
nominal frequency @ -23 dBmO
ON/OFF = 50 ms/50ms
KP duration 100 ms
60 Hz signal @ 81 dBrnc0 (-9dBm)
or
180 Hz signal @ 68 dBrnco (-22dBm)
all digits
Tolerate Intermodulation: Must tolerate @A-B and @B-A modulation products
with a power sum
28 dB below each frequency component level of the
signals.
Table 220
XMFR receiver specifications (Part 2 of 3)