`-Digital clock head endCombination of the V-DCPI and V-VCU pre mounted and connected on a convenient 2u 19 rack or wall mount shelfFacilitates 2-wire digital clock correction to the Class Connection ES Valcom MultiPath VC-24 or V-2924A systemsConvenient pre-mounted 2u 19 rack shelf assemblyThe V-DCH Digital Clock Head End incorporates a V-VCU 6 Amp 2-wire Clock Driver and a V-DCPI Digital Clock Protocol Interface in a convenient 2u 19 shelf assemblyThe unit provides a complete interface between the DB1