Commskit : Telephone Systems : CPU's : Mitel : SX20 SX20 CCU ( 8+24 ) with 543 generic s/w B2(Reference #sp3000 12649) Price:  £450.00 [675,00 Euro] (Excluding: VAT at 17.5%) Commskit : Telephone Systems : CPU's : Mitel : SX20 Commskit - Online Trading