Installation guide

D6600 NetCom

Operation

D6600 NetCom System Guide

18.

A hardware tree

appears showing all

the devices connected

to the PC in the top

level.

19.

Click on the small plus sign ( ) next to Ports (COM & LPT) to

reveal the individual ports

20.

Highlight the Communications Port (COM1) used to connect

the D6200 Software to the D6600 COM4 port via a direct connect

NULL Cable.

21.

Right click and select Properties from the menu that appears.

22.

The Communications Port (COM1) window appears with four

tabs across the top.

23.

Select the Port Settings tab

24. Select 38400 bits per second

baud rate from the B

its per

second: drop down menu

and then click OK.

3.2 NetCom Failover Solution

An installed NetCom System should consist of at least 2-D6600s and 2-D6680s to allow for a redundant backup to the

first system in the event of a system #1 failure. To allow for a redundant backup of the D6680, the programmed IP

Address of D6680 #1 has to be programmed for into D6680 #2. This would allow for a change over from D6680 #1 to

D6680 #2 and only one of the D6680s connected to the network at one time. To most this would seem like a simple

solution, but it is much more complex that it appears. In a network environment the MAC address plays a crucial role in

delivery of the data to the D6680. By simply switching from D6680 #1 to D6680 #2, there would be no data delivered to

D6680 #2 immediately after switching. This section is not to explain why this happens, rather how to overcome this.

Software version 5.5C or greater must be installed in the D6680 for the Alternate MAC Address function.

In Figure 4, each of the D6680s are programmed with the same IP Address, but only one is connected to the network at

the same time by using an AB Switch as shown. This switch could also be a larger switch which also changes the phone

lines from one 6600 to the other or any other type of switch that the location may be using as long as it switched the

Network connection from one 6680 to the other.