Chapter 4. Trunks and Lines
Section
300~Installation
Table 4-7. Tl Hardware requirements
for
double-cabinet systems
Tl
CPC-B V4
SCC-B
Tl
Trunk
Tl
MDF
Sync
Tl
Cable
Cable Kit
Location
(V-B-43411)
(VB-
Card
Card
Card
(V-B-
(VB-43 110)
(See Note
4342
1)
W-
W-
(VB-
43564)
(See Note
1.)
(See Notes
43561)
43562)
43563)
4.)
2
and 3.)
Tl
in the
1
1
1
1
1
0
1
Master
Tl
in the
1 1 1
1
1
1
1
Slave
gf*i
l
/
l
1
2
/
2
/
l
/
l
/
l
Notes:
1. Version 1.3 of the Bus Processor Unit
(BPU)
chip is required for
Tl.
2. An MFR card is required for
DID/DNIS
if DTMF signaling is used. If
DID/DNIS
is provided through DP sig-
naling, an MFR card is not required.
3. SCC-B with ROM 1.3 or later is required if the central office does not provide
Tl
dial tone.
4. Version 1.2 of the
CableKit
is required for
Tl.
l
The
Tl
trunk card must be installed in the
“EC/IRK”
slot.
l
The installer
must
provide a Channel Service Unit (CSU) that complies
with FCC Part 15 and Part 68. The CSU is installed between the DBS and
the public network. The CSU provides alarm, diagnostic, and monitoring
functions, as well as network protection.
The CSU must be compatible with the framing format (SF or ESF) that is
provided
by-the
public network.
Maximums
l
One
Tl
card can be installed per cabinet.
l
The number of Tl cards
that
can be installed in double-cabinet systems
depends on the sizes of the connected systems. Table 4-12 on page 4-15
shows
Tl
maximums for double-cabinet systems.
Note: The DBS 72 + DBS 40 combination does not support
Tl.
4-l 2
DES
Manual
-
Issued
8/l/95
DES-70-300
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