Comdial and FXT Manual de usuario descargar pdf (Pagina 5)

Introducing

System-to-System Networking

System-to-system networking connects several DXP, DXP Plus, or Impact FXS/FXT systems together in an

arrangement that allows unified communications through the systems. Appendix A contains a list of features

supported by System-to-System Networking.

A signaling protocol based on Integrated Services Digital Network (ISDN) controls the network interface between

the systems. The interfacing hardware consists of a T1 or E1 line board equipped with a primary rate interface

(PRI) circuit card. The T1 boards are designated with the product codes DXNET for DXP and DXP Plus systems,

and FXNET for Impact FXS/FXT systems. E1 boards are designated with the product codes DXPE1 for DXP and

DXP Plus systems, and FXE1 for Impact FXS/FXT systems.

In addition to the network interface board required at each system in the network, each node requires a

synchronization card (DXOPT-SYN). (The hub system does not require a DXOPT-SYN card to perform on-site

network functions.) The hub requires a network interface board for each node on the network; each node requires

a minimum of one DXNET or FXNET network interface board for every link to the hub.

NOTE: If you also have the hub connected to the service provider through regular T1/E1 or PRI boards for

normal outbound call traffic, you will need to install a DXOPT-SYN card in the hub system for that

application. The PRI Flash revision should be upgraded to the most recent.

The communications network consists of one system acting as the hub and the remaining systems serving as

nodes. The network allows up to ten nodes in addition to the serving hub making a total of eleven systems

combined into the network. The hub can be DXP, DXP Plus, or Impact FXS/FXT common equipment; however,

a DXP Plus or Impact FXS/FXT provides the best results due to the possible heavy network traffic through the

hub.

NOTE: The hub and all nodes MUST be using the same software release and the same feature sets. For

example you cannot use feature set 15A release 171 software on the hub and feature set 15A release

172 on any of the nodes.

The network can be an intra-network joining several systems located at the same site, or an inter-network joining

several systems across a geographic area. When a service provider supplies the communication connections

between the hub and the nodes, these connections must be PRI Clear Channel dedicated access lines for network

use.

Using System-to-System Networking – 3

Installing and Using System-to-System Networking IMI89–280

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Comdial and FXT Manual de usuario Pagina 5