Description Aztek Networks makes sure you can always dial 9-1-1. The company provides emergency stand alone (ESA) switches under the 5000 Series brand. Telecommunications network operators use its hardware to upgrade their networks to multi-service broadband while improving the reliability of voice and emergency access services. Its switches enable telecom companies to maintain local calling and emergency service during network outages. Customers have included Northwest Telephone Cooperative and Atlantic Telephone Membership Corporation. The company was founded as Aztek Engineering in 1982 by CTO and former CEO J. Mark Elder, but the company changed its name to Aztek Networks in 2006.