System information

FCD 901 48
Issue R2A, 07.2009
XMP1 Release 5.5 System Description
Introduction to the SISA Network
Page 7-2 Proprietary Information Aastra
In order to provide redundancy, it is possible to set up ring structures in a
SISA network.
The connection of the SISA network to the LAN/WAN of the ServiceOn
Access Network Management System is set up via a QD2 gateway.
ServiceOn Access can be connected to several QD2 gateways.
The following figure shows the principle described above:
ServiceOn Access
Workstation
ServiceOn Access
Communication Server
(SISA Gateway)
LAN
SISA-K
NENEK K
1 2 3
Site A
SISA-K
NENEK NE
12 3
Site B
SISA-K
NENE NE
12
30
Site D
SISA-K
NENE
K1
NE
12 3
Site E
NENE
K1
NE
Site F
1
K1: Slave,
simultan-
eously
master for
line
max. 6
Max. 9
switching
stages.
With SISA-V:
max. 8
Line structure
Tree structure
Figure 7.1: Integration of XMP1 into the SISA DCN
NE=XMP1 and/or other QD2
network elements