About Siress Enterprises, A TesCom Power Supply Repair Company

TesCom has been serving the Telecommunications and CATV Industry for over 35 years. TesCom was founded in 1982. With the acquisition of Siress Enterprises in 2018, TesCom now offers power supply repair services. We continue to follow three simple business principles that formed the basis for the company:

1. We provide the services our customers need.
2. We perform these services with the highest quality standard.
3. We give the customer exceptional value.

Today our company is divided into three divisions:

Manufacturing and Sales Divisions: We manufacture Halcyon, CopperPro, 635 Quickbert, and NetDSL test equipment, Tiempo 6400 series timing and synchronization clocks, and semiconductor thermocouples. Everything we sell is guaranteed and certified by our internal Laboratories so our customers are assured of high quality products and full warranty coverage after the sale. Contact this team via sales@tescomusa.com

Calibration Laboratories: We have an ISO 17025 accredited laboratory in Austin, TX. Our services include Calibrating General Electronic Laboratory Test Sets, RF, Optical and Physical/Dimensional Equipment. Contact this team via calsupport@tescomusa.com

Repair Laboratories: With three repair labs located in Austin, TX, San Jose, CA, and South Bend, IN, our North American footprint provides regional service capabilities throughout the US. We service thousands of units per month including fiber optic, transmission, DSL, broadband equipment and many more. If it's used to maintain a carrier network, we repair it. In addition to these services, we offer ISO 9001-2008 certified power supply repair following the acquisition of Siress Enterprises. Contact this team via service@tescomusa.com

You can view the full suite of products and services at www.TesComUSA.com

Corporate Office:

20200 Algreg St.
Pflugerville, TX 78660
Bill To & Remittance:

135 North Anthony St.
Muskogee, OK 74403


Our Employees are experts; trained by some of the largest OEM's - Astec, Power-One, ACDC


We are proud of our highly-trained, dedicated staff. Our technicians have over 100 years of combined experience. Much of their training was received at the OEM level. We realize that our continued success depends on your loyalty and complete satisfaction.