Your question about Siemens S30810-Q2115-X SLMU 16

Depending on the board variant, the SLMU (Station Line Modul Digital U_P0) offers 16 U_P0 interfaces, to each of which either one U_P0 terminal or several S0 terminals (with a network terminator) can be connected.

Each U_P0 interface constitutes an ISDN basic access with two B-channels (64 kbits/s each) for speech/data and a D-channel (16 kbits/s).

The two B-channels can be switched through to any available time slots of the PCM highway on the system-side. Of the possible D-channel data types (s, t), only s-data (signaling) is transmitted. The signaling data is exchanged between the U_P0 interface and the common control CC or the peripheral packet handler (PPH). In emergency operation, either one remote U_P0, or one remote S₀ terminal and an NT, can be served per U_P0 interface of the board.

The front panel of the board contains one LED.