FIGURE INDEX
Figure 1.
PDH hierarchy ................................................................................ 13
Figure 2.
Power supply input panel ............................................................... 14
Figure 3.
Front panel of the DM4E1 .............................................................. 15
Figure 4.
Rear panel of the DM4E1 ............................................................... 15
Figure 5.
Front panel of the DM16E1 ............................................................ 16
Figure 6.
Rear panel of the DM16E1 with either IEC or BNC connectors ...... 16
Figure 7.
Rear panel of the DM16E1 with RJ45 connectors .......................... 16
Figure 8.
G.703 E1 interface straps for DM4E1 ............................................. 40
Figure 9.
G.703 E1 interface straps for DM16E1 ........................................... 40
Figure 10.
Local analog loopback at a G.703 interface ................................... 40
Figure 11.
Local digital loopback at a G.703 interface ..................................... 41
Figure 12.
Example of ring topology ................................................................ 41
Figure 13.
Location of V.35 / V.36/V.11 interface straps ................................. 47
Figure 14.
BERT generation and reception at the digital interface .................. 48
Figure 15.
Local digital loopback at the digital interface .................................. 48
Figure 16.
DM16E1 panel for optic interface card ........................................... 54
Figure 17.
Local analog loopback at an optic interface .................................... 54
Figure 18.
Local digital loopback at an optic interface ..................................... 55
Figure 19.
A DM16E1/DM4E1 loopback operating with no failures ................. 57
Figure 20.
Failure in the main loopback ........................................................... 57
Figure 21.
Electric E3 interface card panel ...................................................... 59
Figure 22.
Local analog loopback in an electric E3 interface ........................... 61
Figure 23.
Local digital loopback in electric E3 interface ................................. 61
Figure 24.
Strap location ................................................................................. 61
Figure 25.
Example of bridge inverse multiplexing .......................................... 65
Figure 26.
Bridge card_HW1 View .................................................................. 70
Figure 27.
Bridge card_HW2 View .................................................................. 70
Figure 28.
Connections in Point to Point topology ........................................... 97
Figure 29.
Example of bidirectional ring with Regular-Ring topology ............... 98
Figure 30.
Example of bidirectional ring with Cross-Ring topology .................. 98
Figure 31.
Connections in Regular-Ring topology ........................................... 99
Figure 32.
Connections in Cross-Ring topology .............................................. 99
Figure 33.
Example of In-Line topology ......................................................... 100
Figure 34.
Connections in In-Line topology ................................................... 100
Figure 35.
Example of Optic Modem topology .............................................. 101
Figure 36.
Example of interface converter ..................................................... 102
Figure 37.
Example of Regenerator topology ................................................ 102
