
Programing
System-to-System Networking
Using the Visual Man-Machine Interface (VMMI), program the network features at the hub system. You cannot
program the network features at the nodes; however, you can use VMMI at any node system to view (read only)
the programmed network parameters.
NOTE: If you are upgrading an existing system to use networking software, you can archive the database from
the existing system and restore it to the upgraded networking system by using VMMI’s Archive and
Restore features.
Programming the Node System
You must program the node extensions before programming the hub. Make sure you are using the latest version
of the VMMI software. We recommend that you do a Master Clear 3 before you start programming.
1. Make the necessary programming changes that only affect local operation.
2. Program the board configuration to match DXNET or FXNET boards to their assigned slots, and inspect
the installation.
Verify that the boards are operational, and that there are no alarms present after you have connected the
node to the hub. Resolve any alarm problems before proceeding.
3. Verify that the synchronization card is operating properly (green LED on).
4. Using VMMI’s Board Menu, set the operating protocol for DXNET or FXNET boards to 4ESS, and leave
all other program settings to their default values.
5. Determine the node designation (node 1, node 2, and so forth), and assign a unique name to each node.
Record this information, as you will use it when you program the network properties at the hub system.
6. To ensure there is no confusion in line identification when transferring incoming calls across the network,
give each line in the network a unique name. Do not duplicate any line names or numbers anywhere on
the network.
7. Assign the extension numbers for network operation. Remember, use a different block of intercom
numbers at each node.
8. If you plan to use the Pooled Lines network feature with ARS, program the link channels into their own
line group. Be sure to isolate the link channels from any other lines connected to the local system.
9. Remove any direct line appearance for network channels from the individual stations.
10. Remove any direct or delayed ringing assignments for the network channels.
11. From VMMI’s Networking sub-menu, enable the node.
12. If you are planning for voice announce intercom calls, enable Call Announce on a per-channel basis.
Programming – 33
Installing and Using System-to-System Networking IMI89–280
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