Comtel Telephone Systems is a locally owned and operated since 1984 and is committed to serving Stanislaus, San Joaquin, Merced and Tuolumne Counties.Comtel is also an AT and T Solutions Provider and is your one point of contact for all your telephone needs.Comtel Telephone Systems sells, installs and maintains ESI and Vodavi/Vertical telephone systems. Our digital systems provide many features to enhance your daily operation. Our expert installation and service departments will keep your telephone system working efficiently for many years. We are One Company that Can Order All Your AT&T Service & Telephone Equipment *5-Year Warranty on Select Telephone Systems *VoIP Systems (Voice Over Internet Protocol) *Business Telephones (System Sales & Service) *Voice Mail *Data Wiring *DSL Lines *Service on Most Telephone Systems *Computer Wiring *Voice Messaging *T1 Lines BRAND *Authorized AT&T Service Provider *Vodavi Business Telephones System Sales & Service *AT&T Long Distance Services & Plans