PRACTICE 553-2201-183
P
.
TO
5001
2500
Set
T-
R-
.
Audio and
Signaling
POWN
Phantomed
Over These
Leads
________________________________________----------------------~-------.
500/2500
Line
Clrcult
0
600
n
x
TO
600
Cl
Kl,
4-Wire
Conversion DIA
-
Filter
6
Enab
on
46
Vdc
Ring Control
-
Control
-
.______ -_.
_----------_-__---~_-------~~~~~~~~
‘1
50012500
Llna
Clreult
1
fl+
I
----------------------B-----------J
Tl
---------
5oo/2sopun.---l~~
-----
-------~
RA
I
I
----------------------------------~
T
-r---
----~----------~-------~~~~~~~
50012500 Line Circuit 3
1
I
R+
1
I
---------------------------~~-~~~~J
---_-----_-----_-------------------
Ti
50012500 Line
Circuit
4
I
R
4:
I
I
L-------------------------------!
-----------------------------------
T-i
50012500
Line
Circuit 5
I
!
R
4:
L---------------------------~-~~~~
i
T
“~-----‘----------------------------’
5OOl2500
Line
Clrcult
6
R---;
I
I
i,--,---,--,----------------,---,-----A
T-I
‘-----~---5~ocrsoo~~~-~,~~~,~~
------
-
-----
lo
I
I34
I
i----------------------------------!
NQt9Ji
There is an additional
8
line circuits (line circuits 6-15)
on the
QPC594/QPC729/QPC769
l&port
line cards.
m
This circuitry is only supplied on
theQPC769
circuit Packs.
4
E;%E
iiegrem
of
QPC594/729/789
Line Pack
Dal
-0u
CEnab
PE Shelf
Backplane
CrO
W
Pege
5-8
.-
c