Справочник Пользователя для Motorola T1/E1
Canopy T1/E1 Multiplexer
September 2004
T1/E1 Multiplexer FPGA Version 3.4
Page 57 of 73
3.4 T1/E1 LOOPBACK
Each of the 4 T1/E1s can be placed in loopback mode for testing and maintenance
purposes. This provides a bi-directional loopback on the T1/E1 interface. The near end
T1/E1 Transmit is looped back to the near end Receive, and the far end T1/E1 transmit
that arrives over the BH Ethernet port is looped back to the far end Receive.
purposes. This provides a bi-directional loopback on the T1/E1 interface. The near end
T1/E1 Transmit is looped back to the near end Receive, and the far end T1/E1 transmit
that arrives over the BH Ethernet port is looped back to the far end Receive.
The T1/E1 loopback remains in effect until the user removes the loopback through the
CLI or through the EMS, or the system is reset.
CLI or through the EMS, or the system is reset.
CAUTION!
Invoking a T1/E1 Loopback will drop voice calls and disrupt user traffic
flow.
flow.
Figure 23: Canopy T1/E1 Multiplexer in T1/E1 Loopback mode
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