The Prostar series has been discontinued. However, Comtex still services, supports, programs and maintains any Prostar telephone system. We can also upgrade your system to include voicemail. At our Comtex complex, we have all the parts and equipment necessary to repair or maintain your system. If you want to expand your existing Prostar system, we can provide you with refurbished prostar keysets. Please call or email us for any information, repair or purchases.