Ericsson MINI-LINK BAS, Техническое описание, Страница: 42 / 174

MINI-LINK BAS 3-6
Technical Description EN/LZB 111 0542 P2B
3.2.3 Generic MINI-LINK BAS Network
The generic MINI-LINK BAS network is made of several SN.
Each SN can be seen as a totally independent, tree-structured sub-
network, having the direct access to each backbone network and
offering end-user services.
The SNs are mutually independent, that is, there is no traffic crossing
the SN boundaries toward another SN without passing through the
backbone network. Each CP can manage a number of different System
Nodes (SNs)
. The numbers of SNs each CP can manage is mainly
dependent on the total number of ATs.
A single EM can manage up to 10 CPs. In the management
perspective the CP is the agent whilst the EM is the manager. The sub-
network controlled by the CP is therefore referred as NE.
A single CP can control up to 30 SNs. However, in order to optimise
the control architecture performance, it is recommended not to exceed
128 ATs per CP; therefore, the real number of CP to be deployed
strictly depends on the topology of each SN, and less than 30 SNs
could be actually allowed under the same CP.
Backbone Network
(ATM, PSTN, data network, ...)
..................................................................................
CP
SN SN SN SN SN
CPE CPE CPE
EM
Network Element
Figure 3–3 Generic MINI-LINK BAS Network