Siemens ET1 Series Informacje Techniczne Pobierz pdf (Strona 20)

INSTALLATION

2-12

Line Loop: Loopback analog path within transceiver in the direction

toward TDM bus.

Transceiver end Framer end

TDM busE1

Loopback path

Figure 2-5 Local Line Loopback path

Remote LL: Loopback analog path within transceiver in the direction

toward E1 interface.

Transceiver end

Framer end

TDM busE1

Loopback path

Figure 2-6 Remote Line Loopback path

Tx Unframed All 1s: Transmit constant all 1 signal on E1 interface for

testing.

Tx Signaling All 1s: Transmit all 1 on time slot 16 frames for testing.

Clear All Test: Clear all active test and return to normal

operational mode.

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Siemens ET1 Series Informacje Techniczne Strona 20