Siemens ET1 Series Technical Information download pdf (Page 19)

INSTALLATION

2-11

2.5.5 TEST: Loopback diagnostic functions

Below are functional descriptions for all available loopback objects in

‘TEST’ group. Refer to table 2-4 for all available options.

Configurable objects:

Data Loop: Loopback digital data path within framer in the direction

toward TDM bus.

Transceiver end Framer end

TDM busE1

Loopback path

Figure 2-3 Local Data Loopback path

Remote DL: Loopback digital data path within framer in the direction

toward E1 interface.

Transceiver end Framer end

TDM busE1

Loopback path

Figure 2-4 Remote Data Loopback path

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Siemens ET1 Series Technical Information Page 19