TC Communications TC8518 T1, Руководство пользователя, Страница: 91 / 108

Chapter 6 Troubleshooting T1/E1 CSU loop up & loop down codes
TC8518 Rev 2.2 User Manual 6-9
Figure 6-11 T1/E1 Remote Loop Back Signal Flow
TC8518 Unit A
Loop Monitor TC8518 Unit B
Loop Monitor Functionality
Disabled Enable Remote This setting allows the Telco to send loop codes
that will enable/disable the remote loopback on
Unit B for a specific T1 channel.
Figure 6-12 T1/E1 Local Loop Back Signal Flow
TC8518 Unit A
Loop Monitor TC8518 Unit B
Loop Monitor Functionality
Enable Local Disabled This setting allows the Telco to send loop codes
that will enable/disable the local loopback on Unit
A for a specific T1 channel.