Appendix A. EX 1.0 Feature Update Section 700-Operation
Page A-26 DBS Manual - Revised April 2000 DBS-2.3/9.2-700
• SCC-B
• T1 Trunk Card
• T1 MDF
• T1 Sync Unit
• External CSU (not provided by Panasonic)
The maximum number of nodes which can be connected together is 4. Each node can be
either a single or double DBS cabinet configuration. The connection between these systems
is accomplished via T1 talk paths, with the quantity determined during installation.
Network Extension to Extension Calling
Networked DBS’s use a 4-digit extension numbering plan. The first digit determines the node
being called. For example:
Node 1 - leading digit 1
Node 2 - leading digit 2
Node 3 - leading digit 3
Node 4 - leading digit 4
Figure A-11.T1 Network Extension Numbering
When an extension in one node is called via the intercom from an extension in a different
node, the called extension rings - Intercom Voice Calling and OHVA do not work when
calling from one node to another.
The DBS determines how to route the calls based on the network trunk group priorities
established during programming. To allow optimum flexibility in a 4-node network, up to 3
different trunk group priorities can be established.
Node 1
Extension 1XXX Node 2
Extension 2XXX
T1 Node Network Trunks