Network Router User Manual

Nortel Secure Router 8000 Series
Configuration -WAN Access
Issue 5.3 (
30 March 2009) Nortel Networks Inc. iii
Figures
Figure 4-1 STM-N frame structure.....................................................................................................................4-3
Figure 4-2 Process of multiplexing E1 to STM-1 ..............................................................................................4-4
Figure 4-3 Process of multiplexing T1 to STM-1...............................................................................................4-4
Figure 4-4 Sequence of arrangement of TUG-3, TUG-2 and TU-12 in VC-4....................................................4-5
Figure 4-5 Networking diagram of connecting routers directly through POS interfaces .................................4-27
Figure 4-6 Networking diagram of using STM-1 CPOS interface...................................................................4-30