Panasonic DBS 576 Technical Manual

Also see for DBS 576 Section 300: User guide Technical manual Technical manual User guide Technical manual

Contents

Panasonic DBS 576 Technical Manual Manual pdf 155 page image

Section 300-Installation Chapter 5 - Trunks and Extensions576-13-300 DBS 576 (USA), issued 6/2/98 5-31Digital ExtensionsGuidelines• Digital extensions are connected to a DEC/8 card installed in a flexible slot of thecabinet. A maximum of 8 extensions can be connected to each DEC/8 card.• One or more Extension MDF Interface Cards (VB-44611) must be installed tosupport connection of extension lines from the Main Distribution Frame (MDF)to the DEC/8 card. Each Extension MDF Interface supports up to three DEC/8 orAEC/8 cards (up to 24 extension). See “Extension MDF Interface Card” on page5-29 for information on installing the Extension MDF Interface Card.• Connect digital extensions to digital key phones via normal building wiring.• See Table 7-9 on page 7-7 for the maximum loop circuit resistance and distance.• DEC/8 cards can be removed and replaced while the system is operating.However, because there are no busy lamps for calls on extensions, you cannotcheck the status of these lines. We recommend using paging, etc., beforeremoving the cards, to warn users that the lines will be disconnected (see page 5-1 for details).• Table 5-22 shows the maximum numbers of cards and extensions per system type.Table 5-22. Maximum cards and digital (and analog) extensions per systemInstallationNote: Prior to installing the Extension Card, make certain you can connect to anExtension 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 anExtension MDF Interface Card.1. Install the DEC/8 card in any available flexible slot.2. Referring to Figure 5-13 and Table 5-23 on page 5-33, connect the extensioncard to the MDF Interface Card using supplied sixteen-lead cable.System Type Maximumnumber of cardsMaximumextension Nos.96 ports (CAB96 5 1) 12 1-96192 ports (CAB96 + CAB96B) 24 1-192288 ports (CAB96 + CAB96B x2) 36 1-288384 ports (CAB96 x2 + CAB96Bx 2) 48 1-384480 ports (CAB96 x2 + CAB96Bx 3) 60 1-480576 ports (CAB96 x2 + CAB96Bx 4) 72 1-576DEC/8 card