 Halstead Telephone Company provides ultimate Wi-Fi service. Halstead Telephone Company will install up to two access points that will extend your reach of Wi-Fi within your home. The cost is an additional $7 a month, plus $50 install. But if you upgrade to a higher internet speed as part of the installation, Halstead Telephone Company will waive the install fee. Halstead Telephone Company, ultimate Wi-Fi service. Get it today. Halstead Telephone. Call 1-800-457-2125 or halsteadtel.com.