Nortel INM 4.1, Руководство по планированию, Страница: 180 / 202

180 of 202 TCP/IP Network Requirements
INM Broadband Release 4.1 PG OC 98-13 Issue 1.2
WAN requirements
The requirement for the wide area network is:
Provide ports to the INM Broadband at 56 Kbit/s and to the OPC modules at
19.2 Kbit/s
The definition of a Wide Area Network (WAN) is a network that ties together
users or networks of users which are widely separated geographically.
Typically, a WAN will use public or private telecommunications facilities,
such as X.25 or T1, to provide the link between its users. If the primary
functions of the INM Broadband are surveillance and provisioning, then X.25
or sub-DS0 line rates will be sufficient for the WAN, shown in Figure 50 on
page 179. If the INM Broadband is to be used in a software delivery function,
then sub-rate T1 or T1 links are recommended as shown in Figure 51 on
page 180.
Figure 51. INM Broadband Leased Line WAN Configuration
PG-0005.1
LAN router
with lease line
capability
56 Kb/sec or
higher
X terminal
X terminal
IEEE
802.3
IEEE 802.3
O
P
C
IEEE 802.3
IEEE 802.3
O
P
C
O
P
C
O
P
C
S/DMS Network
Manager
56 Kb/sec or
higher
56 Kb/sec or
higher