Your question about Siemens S30810-Q2177-X STHC2

The subscriber trunk hybrid card (STHC) board has the combined functionality of the STMD and SLMO boards.

The STHC board optimizes peripheral cards for small configuration and combines the functionality of several cards into one card to free up slots. You can operate the STMD and SLMO cards with the new STHC. The STHC requires 4 S₀  and 16 U_P0E interfaces. The assignment of ports to the STMD and SLMO24 functions are defined and can be configured.

The STHC board provides digital U_P0E and S₀ interfaces.

The STHC board is equipped with the following:

• Digital 2-wire interface
• Terminal with UP0E or S₀ can be connected by means of TA-S₀
• -48V remote feeding by means of UP0E
• Maximum cable length approximately 1000 m
• High performance capability
• Only function ID 1 is supported (no routing and remote functionality)
• Digital 4-wire interface
• Trunk/subscriber mode
• • Details in the trunk mode:
  • • Maximum cable length in trunk mode for approximately 1000 m
    • Reference clock derived in the trunk mode (TMD) at any selected S₀ interface
    • No -40-V feeding
    • Only point-to-point traffic is supported.
  • Details in the subscriber mode:
  • • Maximum cable length in the subscriber mode
    • Extended bus: approximately 500 m
    • Short bus: approximately 150 m
    • Both traffic types, point to point and point to multipoint are supported.