User's Manual

68 DECT Messenger Customer Engineer Manual

Table 9

Site and Area structure

Site

Area Module

To DMC

eDMSAPI

You can use this modular structure to do the following:

• install modules on different computers in the TCP/IP network

• set up a standby eKERNEL on a second site

• connect more than one DMC to DECT Messenger

DECT Messenger in a WAN or MAN network

DECT Messenger can be used in a multiunit MAN (IMP network),

or in a multinode WAN (DPNSS network). If DECT Messenger is

installed in a multiunit DMC network (MAN), you can send LRMS (E2)

messages to DECT handsets in units other than those in which DECT

Messenger is connected. The IMP links support LRMS (E2) messaging,

but this generates a heavy load on the interunit links. Therefore, Nortel

recommends that you avoid sending LRMS (E2) messages over interunit

links. If you must send LRMS (E2) messages to handsets in a unit other

than the one having the DECT Messenger connection, Nortel recommends

that you make a direct DECT Messenger connection to those other

units, as well. Figure 14 "DECT Messenger in a multiunit or multinode

environment" (page 69) shows a configuration in which DECT Messenger

has connections to more than one DMC. The connection between the

units can be either an interunit (IMP) link (MAN) or a DPNSS connection

(WAN), because there is no messaging passing through the links between

the units.

Nortel Communication Server 1000

DECT Messenger Fundamentals

NN43120-120 02.01

11 May 2009