Comdial and FXT Manual de usuario descargar pdf (Pagina 30)

4. Each node site requires a synchronization card (DXOPT-SYN); however, this is not a requirement at the

hub site.

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

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

application.

5. The hub and every node system must be running special networking software with a revision of 12A or

later.

6. A network can contain a maximum of 10 nodes and one hub. While the hub can serve stations and act as

another node in the network, there could be network situations that require you to dedicate the hub as the

network server without station connections of its own.

Disabling a Node System

To disable networking, use VMMI to turn off networking at both the hub and the node. To disable the hub, select

Programming/System/Networking/Network Properties and set the Network Database Status to DISABLED.

To disable the node, select Programming/System/Networking/Node Configuration and set the node status to

DISABLED.

NOTE: If you do not disable the hub and node, the system will not function properly.

Arranging the Links

The network can be an intra-network joining several systems at a common site or an inter-network joining several

systems across a geographic area. Intra-network installations are on-site installations and use house wiring.

Therefore, these installations do not require any service provider connections except the CO line terminations.

With inter-network installations, nodes and hubs are separated by some geographic distance. In these cases a

service provider supplies the connections between the hub and the nodes, and these connections must be T1.5

dedicated access lines for network use.

1. For intra-network installations, make the two-pair, four-wire house wiring connections between the nodes

and the hub. In-house connections between the node and hub systems are per the schematic shown on the

next page.

2. For inter-network installations, arrange with the service provider to supply the proper links to the hub and

node sites. The DXNET or FXNET boards always use the 4ESS protocol (NET5 for E1 boards). Service

demarcation is at a network interface box (also known as a smart jack). In-house connections between the

demarcation point and the local system are per the schematic shown on the next page.

NOTE: Making arrangements for these connections involves meeting with the applicable service providers.

This is because there are economic considerations as well as technical details that vary from location

to location.

3. At both the hub and nodes, locate the board slots where you plan to install the boards, and record those

slots for later reference. At the hub, note which boards slot is dedicated to which node and record that

information for later reference. Remember that several board slots at the hub may be dedicated to the

same node depending upon the number of links required to handle the call traffic.

continued...

28 – Installation

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

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Comdial and FXT Manual de usuario Pagina 30