Panasonic KX-T336 System Reference Manual page 35

E. System Configuration
1.00 Basic Shelf
Basic Shelf is always required.
Basic Shelf contains its own power supply and 15
mounting spaces called "Slot." CPU card and
T-SW card are installed at factory.
Basic Slot 2 is provided for installing the optional
T-SW OHCA card.
The remaining 12 slots provide mounting space
for the various cards that can be used. Any
optional service card can be mounted in any of
these 12 slots.
So these slots are called "Free Slot."
Free Slot can be equipped with the following
optional service cards.
a. Loop start central office trunk (LCOT) Card
b. Loop start central office trunk with Pay-
Tone Detection (PCOT) Card
c. Loop start central office trunk with Polarity
Reversal Detection (RCOT) Card
d. Ground start central office trunk (GCOT)
Card
e. Hybrid line circuit (HLC) Card
f. Proprietary ITS Line circuit (PLC) Card
g. Single line telephone line circuit (SLC)
Card
h. Single line telephone line circuit with
Message Waiting (MSLC) Card
i. Direct inward dialing trunk (DID) Card
j. Both-way direct inward dialing access
(DID-W) Card
k. MFC direct inward dialing access (DID-
MFC) Card
l. Off premise extension trunk (OPX) Card
m. Doorphone circuit (DPH) Card
n. Automatic Gain control (AGC) Card
o. Direct inward system access (DISA) Card
Basic Shelf consists of the followings.
No.
1 POWER-for Power Unit
2 BS1 (Basic Slot 1) - for CPU card
3 BS2 (Basic Slot 2)
4 BS3 (Basic Slot 3) - for T-SW card
5 FS1 to 12 (Free Slot 1 to 12)
Construction of Basic Shelf
P F F F
O S S S
W 1 2 3
E
R
p. Remote circuit (RMT) Card
q. Attendant console Line circuit (ATLC) Card
r. E&M Card
s. T-1 Digital Trunk Card
t. E-1 Digital Trunk Card
1-E-1
Name
- for optional T-SW OHCA card
- for optional service card
F F F F F F
S S S S S S
4 5 6 7 8 9
(Free slot 1, 5 or 9 only)
(Free slot 1, 5 or 9 only)
Number
1
1
1
1
12
F F F B B B
S S S S S S
10 11 12 1 2 3