Ground Start And Did Trunks - Panasonic DBS 40 Manual

Section 300~installation

Ground Start and DID Trunks

Guidelines
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Table 4-4. -48V current consumption
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-48V power supplies tested with the DBS
Table 4-S.
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DBS-70-300
The following procedure covers ground-start (VB-43531) and DID (VB-
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
page 4-5.
Each circuit on the ground-start trunk card can be used as either a loop-
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.
The DID card requires CPC-B (Version 2.0 or higher) and SCC-B (Version
1.2 or higher).
Both ground start and DID trunks require an external -48V floating output
power supply. The following table shows -48V power consumption for
one- and two-cabinet systems.
for
ground-start and DID trunks
System Size
Two-cabinet'system
The following -48V floating output power supplies have been tested with
DBS ground-start and DID trunks.
Manufacturer
Valcom
Tellabs
The following "Installation" section includes details on installing the -48V
power supply.
DBS Manual - Issued 8/l/95
Current Consumption
(Output voltage = 48 k 4 V
Ripple voltage = k.500 mVp-p)
I 1Amp
Model Number
VP-2048B
8 l-8002
Chapter 4. Trunks and Lines
Rating
2 Amps
2 Amps
4-9