Trunk/Tie Line Cards; Loop Start Trunk Card - Ltrk/4 (Vb-44514); Loop Start Trunk Card - Ltrk/8 (Vb-44510); Loop Start/Ground Start Trunk Card - Lgtrk/8 (Vb-44511) - Panasonic DBS 576HD Technical Manual

card. The system control program is downloaded to the internal memory of the system through the
compact flash card.
Memory is retained with a backup battery.
CPC Card Processor Unit
Specifications
MPU (Main Processor Unit)
CPU Used
Operating Clock
Memory Program Area
(ROM):
Work Area
(DRAM):
Backup Area
(SRAM):
Tone/PAD/CNF ROM

Trunk/Tie Line Cards

Loop Start Trunk Card - LTRK/4 (VB-44514)

This Loop Start Card supports up to 4 loop start CO lines and can be installed in any flexible slot. The
card meets UL1459 safety requirements, and can be directly connected to CO lines.

Loop Start Trunk Card - LTRK/8 (VB-44510)

The Loop Start Card supports up to 8 loop start CO lines and can be installed in any flexible slot. This
card meets UL1459 safety requirements, and can be directly connected to CO lines.

Loop Start/Ground Start Trunk Card - LGTRK/8 (VB-44511)

This card supports both Loop Start and Ground Start Trunks. Up to 8 CO lines of any combination of
types can be connected. This card installs in any flexible slot. An external –48V Power Supply
(VB-44022) must be installed and used when using the Loop Start/Ground Start Card.
This card meets UL1459 safety requirements, and can be directly connected to CO lines.
ISDN Primary Rate Interface Card (T/S-point)
This card supports T-point Integrated Services Digital Network (ISDN) Primary Rate Interface (PRI)
(23B+D/24B:1544kbps) and also S-point ISDN PRI.
networking protocol, used to tie DBS 576/HD systems together across ISDN lines.
The PRI card can be set to support either 8, 16 or 23/24 channels.
Unlike most other cards, due to the interaction between card slots, the PRI card must be installed in
specific Free Slots. With the HD's new high-density design, no other neighboring slots are restricted
when this card is installed.
T-point PRI requires a DSU (Digital Service Unit) for connection to the carrier circuit.
A Network Sync card
CPC-HS
68032 (16-bit)
19.6608 MHz
FLASH: 4MB
Boot ROM: 1MB
2 MB
1 MB
1 MB
(VB-44460) is also required.
CPC-HM
68032 (16-bit)
19.6608 MHz
FLASH: 4MB
Boot ROM: 1MB
2 MB
1 MB
1 MB
and QSIG - PRI/23 (VB-44540)
This card can also be set to function on the QSIG
Chapter 2 - System Hardware
CPC-HL
68032 (16-bit)
25 MHz
FLASH: 4MB
Boot ROM: 1MB
4 MB
2 MB
1 MB
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