PRACTICE 553-2201-183
TO
5001
2500
T-.
set
I
R-’
Audio and
Signaling
Power
2-Wire
---*
A’D
Filler
TO
CWh
Conversior DIA
-
Filter
On
LP
DETR
OMS51A

r_-----_--~--~--~--~---~--~-~~~-~~~

T-i 50012500
Line
Circuit
1
I
R-i
I
L
I
-------------------------------A
T
1:--------------------------------
600/2500
Line
Clrcult 2
R-i
L-
i
------------------------------
T i--------------------------------
500/2500
Lln.
Clrcult 3
I
R+
I
L-_--_-----_--_-_-__---------------
Note
A ringing value may
dilfer
depending upon
type
of
ringing generator pack used.
GRD,
-48V.
flOV,
MV
-
Power
85V
rms 20 Hz (Note)
-
Ringing
Superimposed on
-48V
dc
1
.J
-.
j
2:.:I..‘;::.
:.’
.:._
‘-
.:,
:,
:
..,z:
;-,,‘

Fig. 5-2

Block Diagram of

QPClg2/292

Line Pack

Page 5-7

c