On September 7, 1977, Gumaca had its first ring with General Telephone System under Strowger type step-by-step equiptment with only 100 lines. The System was under the management of Spouses Jaime and Nilda Ramos owners/managers.

The couple were from breed of telephone enthusiasts, Artemio G. Ilano and Victoria T. Jalavera of Imus, Cavite, who were former owners of Filipinas Telephone Co., Inc (FITELCO), with then branches in Cavite and Pampanga provinces and Naga Telephone Company Inc. (NATELCO) in Naga City.

With the technology and management know-how they inherited from their parents, and dire wish of bringing telephone services to potentially lucrative areas in their route to Bicol, Jaime and Nilda Ramos have decided to open GTSi in Gumaca 1977 and gradually expanded to Atimonan (1979), Candelaria (1981), Sariaya (1983), Tiaong (1988), San Juan (1992), Padre Garcia (1994), Infanta (1995), Dolores (1997), Libmanan (1994), Pitogo (1998), Pasacao (2000), Real (2001), San Antonio (2001), Mulanay (2001), Catanuan (2002), Unisan (2003) and Sampaloc on August 1, 2008, GTSi acquired the ownership of NORCAMTEL in Daet and LABOTEL in Labo both in Camarines Norte on 2014.

The Company has over 20,000 VOIP lines and Fiber to the home technology on its various exchanges. Fiber optic lay out are on going to meet the demand for high speed internet and comply with the company’s vision.  


To put up a modern telephone and Data exchange in every municipality in Southern Tagalog, is the self-imposed task and mission which is coming into reality.

GTSi is existing to help build economy by expanding its services to rural municipalities that has been left out in the expansion plans of major telecommunications players in the country. The Company is playing an important role as telecommunications carrier, an incentive to would be investors of CALABARZON (Cavite, Laguna, Batangas, Rizal and Quezon).

GTSi is committed to work with you hand in hand to provide you ingenious ways of keeping the Filipino abreast with the most modern Telecommunications ways.


Connecting people and providing access to everything digital through reliable and affordable internet and phone services, and accessible, fast, and friendly customer service.


To be the preferred Telecom service provider in Batangas, Quezon, Camarines Norte, and Camarines Sur.


• God Fearing (May Takot sa Diyos)
• Teamwork (Bayanihan)
• Service Oriented (Pagpapahalaga sa Customer)
• Integrity (Integridad)
• Living the Brand (Pagsasabuhay)
• Excellence (Husay at Galing)
• Accountability (Pananagutan)