Digital Extension Card - Dec/16, Dec/24 (Vb-44612, Vb-44613); Analog Extension Card - Saec/4 (Vb-44621); Analog Extension Card - Aec/8 (Vb-44620); Isdn Primary Rate Interface Card (T/S-Point) - Pri/23 (Vb-44540) - Panasonic DBS 576HD Technical Manual

This card can be installed in any flexible slot.

Digital Extension Card - DEC/16, DEC/24 (VB-44612, VB-44613)

These two cards provide 16 and 24 circuits, respectively, and can only be used with the CPC-HM.
Each circuit supports the Panasonic Digital Key Telephone, Digital Single Line Telephone, DSS/72,
and EM/24. Supply voltage for the telephone is supplied by the digital circuits.
This card can be installed in any flexible slot.

Analog Extension Card - SAEC/4 (VB-44621)

This card provides 4 analog circuits. Each circuit supports standard analog telephone devices such as
analog telephones, answering machines, fax machines, modems, cordless telephones, etc. The
connected device(s) can be either pulse dial (rotary) or DTMF. Ringer circuitry is built into the card.
This card can only be used in Special Slot 2 (in standard cabinet VB-44030 only). DO NOT insert card
while unit is powered on.

Analog Extension Card - AEC/8 (VB-44620)

This card provides 8 analog circuits. Each circuit supports standard analog telephone devices such as
analog telephones, answering machines, fax machines, modems, cordless telephones, etc. The
connected device(s) can be either pulse dial (rotary) or DTMF. Ringer circuitry is built into the card.
This card can be installed in any flexible slot.

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. 23 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 the SAEC, DEC/8, or AEC/8 extension card, and is required if more
than two of these extension cards are used. This interface is not required when using the DEC 16/24
card.

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-HS or CPC-HM card.

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

The MCK Extender Kit is a multi-user device that can used to connect a DBS 576HD 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
Chapter 2 - System Hardware 25