Ground Start And Did Trunks - Panasonic DBS 40 Installation Manual

Section 300~installation

Ground Start and DID Trunks

Guidelines
Table 4-4.
Table 4-S.
DBS-70-300
Technical Manuals Online! - http://www.tech-man.com
The following procedure covers ground-start (VB-43531) and DID (VB-
l
43541) installation using the main trunk connector. For instructions on
using the expansion trunk connector, see "Trunk and Line Expansion" on
page 4-43.
For pinouts and color codes for the main trunk connector, see Table 4-2 on
l
page 4-5.
.
Each circuit on the ground-start trunk card can be used as either a loop-
l
start or ground-start trunk. By default, all circuits on the ground-start trunk
are assigned as loop start.
The ground-start trunk card requires CPC-B Version 1.0 or higher.
l
The DID card requires CPC-B (Version 2.0 or higher) and SCC-B (Version
l
1.2 or higher).
Both ground start and DID trunks require an external -48V floating output
l
power supply. The following table shows -48V power consumption for
one- and two-cabinet systems.
- 48V current consumption
System Size
Two-cabinet'system
The following -48V floating output power supplies have been tested with
l
DBS ground-start and DID trunks.
-48V power supplies tested with the DBS
Manufacturer
Valcom
Tellabs
The following "Installation" section includes details on installing the -48V
l
power supply.
for
ground- start and DID trunks
Model Number
VP-2048B
8 l-8002
DBS Manual - Issued 8/l/95
Chapter 4. Trunks and Lines
Current Consumption
(Output voltage = 48 k 4 V
Ripple voltage = k.500 mVp-p)
I 1Amp
Rating
2 Amps
2 Amps
4-9