WIN Telephone Systems Dallas-Fort Worth WIN Telephone Systems Dallas Fort Worth WIN Telephone Systems are no longer manufactured or supported since 2013 but there are some WIN systems that are still in operation in the Dallas Fort Worth area. WIN systems such as the WIN 36D, WIN 100D, WIN 48, 96,128CT and WIN 440CT systems have provided businesses many years of trouble free operation. Office Telesystems is one of the few remaining companies in Dallas Fort Worth that has parts for the WIN product lines. Contact us for service if you're trying to squeeze the last breath out of your WIN system, or for refurbished equipment until you are ready to upgrade to new technology. System moves, repairs, additions and maintenance contracts are available. Keep in mind since WIN phone systems are no longer manufacturer supported, service, support and repair options may be limited. Contact your sales representative at Office Telesystems if you're ready to invest in new technology or check out our Products page.Request a quote here.