Panasonic CPC-EX 사용자 설명서

Section 300-Installation

Chapter 4. Trunks and Lines

DBS-2.3/9.2-300

DBS Manual - Revised April 2000

4-9

Ground Start and DID Trunks

Guidelines

• 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 4-44.

• For pinouts and color codes for the main trunk connector, see Table 4-2 on

• 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.

Table 4-4. -48V current consumption for ground-start and DID trunks

• The following -48V floating output power supplies have been tested with

DBS ground-start and DID trunks.

Table 4-5. -48V power supplies tested with the DBS

• The following “Installation” section includes details on installing the -48V

power supply.

System Size

Current Consumption
(Output voltage = 48

4 V

Ripple voltage =

±500

mVp-p)

One-cabinet system

1 Amp

Two-cabinet system

2 Amps

Manufacturer

Model Number

Rating

Valcom

VP-2048B

2 Amps

Tellabs

81-8002

2 Amps