See if the light goes out. (Notice that there is only one phone in the test) 4) DTMF. Using the A phone, call an 800-number on the PSTN that accepts DTMF. See if the DTMF appears to work.

Microsoft's second Windows Server 2016 test build, No. 16257, supports the Windows Subsystem for Linux plus several Linux distributions. Written by Mary Jo Foley, Senior Contributing Editor Aug. 8 ...