Meridian America 61 Manual De Usuario
PRACTICE 553-2201-182
Table 2-D
RETURN LOSS (In-Service Requirements)
CONNECTION FROM
CIRCUIT
E C H O
LOW/HIGH
NOTES
4W VNL TIE
TERMINATION
RETURN
SINGING
TRUNK TO THE
L O S S
RETURN
FOLLOWING:
L O S S
4W VNL Tie Trunk
4W legs of Hybrid
(through balance)
terminated in
Non-VNL Tie Trunk
(terminal balance)
600R •k 2.16
at
distant PBX
2 2
1.3
2W Non-VNL Tie Trunk
(terminal balance)
(terminal balance)
2.16
at
distant PBX
1 8
1.5
CO or FX Trunk (terminal
balance)
balance)
900R 2.16
at
c o
1 8
2.5
PBX Station Line (terminal
balance)
SL-1 Station Line (terminal
balance)
+ 2.16
24
24
PBX Station Line (terminal
balance)
Station off-hook
1 2
Note
1: Reference impedance is
2.16
Note 2: Reference impedance is
2.16
Note 3:
Switchable pads set for nominal loss of 1
Note 4:
Switchable pads set for nominal loss of 3
Note
5: If facility loss is
than 2
or adequate impedance correction is not provided,
nominal loss has to be increased to 3
by switching in the 2
pad.
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