Using Digium's Asterisk Open Source PBX software and standard PC hardware, one can create a SOHO (Small Office Home Office) telephony environment that includes all the sophisticated features of a high-end business telephone system.

The TDM400P takes the place of an expensive channel bank and brings the system price point to a low level. By usingS110MandX100Mmodules with the TDM400P, one can create a solution with support for a range of telephones. To scale this solution, simply add additional TDM400P cards populated with modules.

Note: The 12V power connector is required for the operation of FXS modules. It is not required for the operation of FXO modules.