Analog Extensions; Table 5-28 Maximum Cards And Analog (And Digital) Extensions Per System - Panasonic DBS 576 Technical Manual

Section 300-Installation

Analog extensions

Guidelines
• Analog extensions are connected to an AEC/8 card installed in a flexible slot of
• Loop resistance not to exceed 100 ohms
• Four DTMF signal reception circuits are mounted on the CPC96, CPC288 or
• AEC/8 cards and MFR/8 cards can be removed and replaced while the system is
• One or more Extension MDF Interface Cards (VB-44611) must be installed to
• Connect analog extensions to analog single line telephones (SLTs) or other
• Table 5-28 shows the maximum numbers of cards and extensions per system type.
Table 5-28. Maximum cards and analog (and digital) extensions per system
System Type
96 ports (CAB96 1)
5
192 ports (CAB96 + CAB96B)
288 ports (CAB96 + CAB96B
384 ports (CAB96 2 + CAB96B
x
480 ports (CAB96 2 + CAB96B
x
576 ports (CAB96 2 + CAB96B
x
Installation
Note:
Extension MDF Interface Card (VB44611) mounted on the side of the cabinet. See
"Extension MDF Interface Card" on page 5-29 for more information on installing an
Extension MDF Interface Card.
1. Install the AEC/8 card in any available flexible slot.
576-13-300
the main unit. A maximum of 8 extensions can be connected to each AEC/8 card.
CPC576 card. If more DTMF circuits are required, add the MFR/8 card to the
flexible slot.
operating. However, because there are no busy lamps for calls on extensions, you
cannot check the status of these lines. We recommend using paging, etc., before
removing the cards, to warn users that the lines will be disconnected. See page 5-
1 for details.
support connection of extension lines from the Main Distribution Frame (MDF)
to the AEC/8 card. Each Extension MDF Interface supports up to three DEC/8 or
AEC/8 cards (up to 24 extension). See "Extension MDF Interface Card" on page
5-29 for information on installing the Extension MDF Interface Card.
devices via normal building wiring.
Maximum number of
cards
2)
x
2)
x
3)
x
4)
x
Prior to installing the Extension Card, make certain you can connect to an
DBS 576 (USA), issued 6/2/98
Chapter 5 - Trunks and Extensions
AEC/8 card
.
Maximum extension Nos.
12
24
36
48
60
72
1-96
1-192
1-288
1-384
1-480
1-576
5-39