PRACTICE 553-2201-182
Table 2-K
MESSAGE CIRCUIT NOISE
CONNECTION
NOISE LEVEL
dl3mOp dBrn
3
kHz
FLAT
Line-to-Line
Line-to-Trunk:
G-65 ~29
(a) Trunk side
(b)
Line side
Trunk-to-Trunk
(2 dB pads out)
6-65
<29
~-65
629
e-65
~29
Table 2-L
IMPULSE NOISE
With all circuits at the MDF correctly terminated. the impulse noise measured at line terminals should
be as follows.
NOISE
LEVEL
(d8)
COUNTS
-
50
<5
counts/S min for
50%
of the connections
50
GO0
counts/5 min for all connections
59
<5
count.45 min for all connections
Table 2-M
LONGITUDINAL BALANCE
FREQUENCY
(Hz)
MINIMUM
BALANCE
(d8)
AVERAGE
BALANCE
(dB)
200
58
500
66:
1000
::
3000
53 Fi;
cl
Page 2-6
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