Ericsson LBI-39001 Instrukcja Operatora Pobierz pdf (Strona 19)

3.1.2. PI

Please refer to LBI-39040, PBX Interface User's Manual.

3.1.3. MUX

The following documents provide additional information on the T1 MUX and the E1 MUX:

• 365-454-000, Equipment Manual for ND4 Enhanced Digital Channel Bank Equipment (NEC ND4E T1 MUX

Manual. See Appendix C for a condensed listing of information applicable to the T1 MUX.)

• 62.6929.000.00, ANT Equipment System PCM 30 FXM (ANT BOSCH E1 MUX Manual)

3.1.3.1. E1 MUX Configuration

The ANT BOSCH E1 MUX requires no configuring; however, the steps below must be performed to connect the MUX

to the PI and the IMC.

1. X88 ties to -48V for power from the MD110.

2. X87 is the E1 link to the PI (data cable).

3. X85 connects to J7 of the Audio Concentrator (audio out with respect to the MUX).

4. X83 connects to J8 of the Audio Concentrator (audio in with respect to the MUX).

There are two visual indications that the MUX is operating properly:

1. The LED on the front of the MUX is not illuminated (the LED illuminates when the MUX is not working properly).

2. The PI terminal does not display the message “MUX trunk alarm” on the screen. This message is only displayed

when the MUX is working improperly.

3.1.3.2. T1 MUX Configuration

The T1 MUX has two digroups: Digroup A (DG-A) and Digroup B (DG-B). Either digroup or both digroups may be

connected, depending on the application and the site.

To connect Digroup A, follow the steps below.

1. X2 to J7 of the Audio Concentrator (audio out with respect to the MUX).

2. X1 to J8 of the Audio Concentrator (audio in with respect to the MUX).

To connect Digroup B, follow the steps below.

1. Z2 to J7 of the Audio Concentrator (audio out with respect to the MUX).

2. Z1 to J8 of the Audio Concentrator (audio out with respect to the MUX).

There is a T1 link to the PI for both Digroup A and Digroup B. For power connection, -48V connects to the main and

ground connects to ground.

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Ericsson LBI-39001 Instrukcja Operatora Strona 19