Isdn Primary Rate Interface Card (T/S-Point) - Pri/23 (Vb-44540); Isdn Basic Rate Interface Card (S-Point) - Sbri/4 (Vb-44630); Extension Mdf Interface - Mdf-Ext (Vb-44611); Options - Panasonic DBS 576 Technical Manual

ISDN Primary Rate Interface Card (T/S-point) - PRI/23 (VB-44540)

The PRI/23 card supports both S-point and T-point ISDN. See pg. 24 for more information.

ISDN Basic Rate Interface Card (S-point) - SBRI/4 (VB-44630)

This unit supports Basic Rate Interface (2B+D:144kbps) for S-point ISDN. Each card provides 4 BRI
circuits.
This card can be installed in any flexible slot.
The S-point BRI Unit supports information transferring capability (speech and data) at the CO trunk.

Extension MDF Interface - MDF-EXT (VB-44611)

The Extension MDF Interface provides for connection from the cabinet to the MDF using standard 25-
pair cables. A cable is run from the front of the extension card to the Extension MDF card. Each
Extension MDF card can support any combination of up to 3 DEC/8 or AEC/8 extension cards. Up to
10 extension MDF interfaces can be installed in each cabinet.

Options

Network Synchronizing Unit - SYNC (VB-44460)

This unit provides network synchronization and is required with digital circuits such as ISDN and T1.
The SYNC card synchronizes the PCM clock with an outside resource. When digital circuits are used,
one SYNC card is required and installs on the CPC-96, TSW-288, or TSW-576 card.

MCK Extender Kit - (VB-44670 - VB-44674)

The MCK Extender Kit is a multi-user device that can used to connect a DBS 576 system to remote
extension telephones across IP network lines. An MCK Extender Kit Gateway unit attaches to a
DEC/8, DEC/16, or DEC/24 card. That unit is linked across an IP network line to an MCK Extender
unit. Panasonic digital keyphones are attached to the extender unit. These keyphones provide all the
services available to extensions that are directly connected to the DBS 576 system.

Network BLF Display - (VB-44730)

Panasonic's Network Busy Lamp Field (BLF) Display is a PC-based application that monitors the
activity (in use/on-hook/special feature set) of phone extensions across a Local Area Network (LAN)
or Wide Area Network (WAN).
Setting up the Network BLF Display system includes configuring a Server PC, Client PCs and
Browser PCs. Client PCs must be connected to a PBX system with an API card.

Service Circuit Card - SCC (VB-44181)

This card provides enhanced service functions such as two RS232C ports (9600bps), a Background
Music input, and two-way external paging control.
Only one SCC can be installed in a DBS 576 phone system.
RS232C port:
BGM input terminal:
On/Off control of external amplifier:
On/Off control of external equipment:
Maximum current of control board:
Paging Output - with Control Output:
26 Chapter 2 - System Hardware
2 ports (maximum 9600bps)
1 port (with RCA jack)
1 contact
5 contacts (withstand voltage 30V)
.25mA total
maximum 2A (control output)