Labels:text | screenshot | diagram OCR: Tokyo New York fatemnets Enterprise harare HEC Osaka, Japan Enterprise Proviant 1300% Fiches Tracing the Call. Kanematsu employees in the United States place a domestic call to the company's NEC PBX in lower Manhattan, which in turn communicates with Lucent Technologies' Internet Tele- phony Server-Enterprise (ITS-E) through a T1 Interface. From there, the call is converted to pack ets and sent over the Internet to either Tokyo or Osaka, Japan, where the call goes through another ITS-E, a local PBX, and on to the extension of the receiving party.