COVID-19:作为一家重要的电信解决方案供应商,EXFO在将员工健康和安全作为首要任务的前提下,保持全面运营。
技术在快速发展进步。因此,我们建立了易于使用的术语汇编,帮助您更好地了解影响您业务的术语、技术和趋势。
A telephone exchange that serves a particular business or office, as opposed to one that a common carrier or telephone company operates for many businesses or for the general public.