Black Box MT1000A-13-R3, Быстрый старт

Страница: 65 / 78

MT1000A Installation and Operation Manual Chapter 5 Testing and Diagnostics
Diagnostic Tests 5-7
Remote Loopbacks in the MT1000A
You can set two types of remote loopback connections in the MT1000A unit:
• T1 remote, which is set for each T1 interface separately, from the terminal.
•
Fiber optic link remote, which can be set from the terminal.
T1 Remote Loopback in the MT1000A
The T1 remote loopback returns the transmitted Demuxed T1 to the receiver Mux.
Simultaneously, the MT1000A sends an unframed all-ones signal to the T1 link.
Figure 5-3 shows the T1 remote loopback connection.
This test checks the operation of the local MT1000A and the connection to the
remote MT1000A unit.
Figure 5-3 T1 Remote Loopback in the MT1000A