Specifications

D8E1T1 Installation and Operation Manual Chapter 4 Troubleshooting and Diagnostics
Diagnostic Loops 4-7
3. Press Y to initiate the test and return to the Diagnostics Manager menu or press
N to cancel and return to the BERT Selection submenu.
4. From the BERT Selection submenu, press <Esc> twice to return to the
Diagnostics Manager menu.
Stop Link BERT
1. From the Diagnostics Manager menu, press B and the BERT Select submenu
appears.
2. With the cursor on the New BERT field, press the letter O.
3. Press X to stop the test.
4. When prompted: “
Stop Bit Error Test? Are you sure (Y/N)?” Press
Y to stop the test and return to the Diagnostics Manager menu or press N to
cancel and return to the BERT Selection submenu.
5. From the BERT Selection submenu, press <Esc> twice to return to the
Diagnostics Manager menu.
4.5 Diagnostic Loops
Diagnostic Loops include several types of Network Interface (NI) Loops (Local,
Line, Analog, Remote, Payload, SmartJack, and User Defined) as well as a
Backplane Loop. Each of the 8 links can be independently looped back. These
loops can be enabled from the Loop Selection screen as detailed below. A diagram
depicting all loopbacks is shown in Figure 4-7.
Navigation:
D8E1T1 Main Menu
↓
Diagnostics
↓
Line Diagnostics Center
↓
Select a T1/E1 Link
↓
[L]oop