Zhone 7995 ユーザーガイド
7. Testing
7-8
May 2002
7990-A2-GB20-00
Data Terminal Loopback
A Data Terminal Loopback (DTLB) loops user data back to the DTE. This loopback
is located as closely as possible to the user data port (DTE) interface.
is located as closely as possible to the user data port (DTE) interface.
Procedure
To run a Data Terminal Loopback:
1. Position the cursor at the Start command next to Data Terminal Loopback on
the SYNC Data Port Tests screen.
2. Press Enter.
The Start command is changed to Stop.
3. To manually stop the test, verify that the cursor is positioned at the Stop
command and press Enter.
The Data Terminal Loopback cannot be started when a Repeater Loopback, Line
Loopback, DCLB, or Remote DCLB is in progress on the data port.
Loopback, DCLB, or Remote DCLB is in progress on the data port.
02-15933-02
DSL
Port
Port
Interface
Framer
EIA-530
Port
CAP
All Ones