Nortel SL-100 Product Manual page 26

26 Meridian SL-100 general functions
The NMs are duplicated as two parallel sets (plane 0 and plane 1) of the
two-way transmission paths for each connected channel between the
Peripheral Modules (PMs). The duplicated parallel paths ensure that if one
channel in a transmission path fails, the alternate channel is immediately
available. Meanwhile, recovery action is taken to restore the failed channel.
Two types of networks are supported: Junctored Network (JNET) and
Enhanced Network, although Nortel recommends the upgrade to ENET for
improved performance. ENET is a non-blocking, junctorless, single-stage
time switch that is compatible with all Meridian SL-100 PMs. ENET is a
replacement for JNET, therefore, the two networks cannot coexist in the
same system. ENET hardware is either housed in an external ENET cabinet
(for SuperNode systems) or a single ENET shelf located in the SuperNode
SE cabinet. ENET is provisioned with new SuperNode systems and all
SuperNode SE systems.
Figure 7
Functional areas of the Meridian SL-100 network module (ENET)
Copyright © 2006, Nortel Networks
.
Note: JNET's last supported release will be SE07 and it will not be
supported after December 31, 2005.
Communication Server 2100
Meridian SL-100 Product Guide
555-4001-103 20.01 Standard
SE09 20 October 2006
Nortel Networks Confidential