User's Manual

Publisher and Subscriber 67

Figure 68

eTM-HA Logging tab

Note: The information shown in Figure 66 "Open Task Manager" (page

65) is intended as an example. The exact information for your system

differs according to your configuration settings.

Publisher and Subscriber

A typical eTM_HA environment involves one system configured be

Publisher, and one or more system configured as Subscribers. Although

eTM_HA can run stand-alone (just one publisher), there is no value in

activating an eTM_HA when there are no Subscribers. If there are no

Subscribers, use eTM instead of eTM_HA.

In the Publisher and Subscriber model, the Publisher is the site where the

Messenger_CFG configuration database is centralized. This is often called

the main site. All configuration must reside on this centralized database

only, so eCONFIG maintenance and eKERNEL must all reside on this

same site.

The eTM_HA software can also be installed on distributed systems,

intended to launch tasks on the distributed system. These systems launch,

for instance, eCAP and eDMSAPI modules, all of them referring to the

central eKERNEL residing on the Publisher site.

Nortel Communication Server 1000

DECT Messenger Installation and Commissioning — Book 2

NN43120-301 02.01 4 June 2010