This doesn't work. The Hayes modem protocol specifies that a significant pause must be inserted after "+++" for it to have signaling effect. https://en.wikipe

This doesn't work. The Hayes modem protocol specifies that a significant pause must be inserted after "+++" for it to have signaling effect. https://en.wikipedia.org/wiki/Hayes_AT_command_set#Hayes'_solution https://en.wikipedia.org/wiki/Hayes_AT_command_set#Hayes'_so...