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IP Telephony Requirements for Emergency Messages in Japan (2) “Keeping connection” and “Reversing call” Emergency call MUST NOT be terminated unless ECRO terminated it, even though the reporter hung up. Reporter’s terminal MUST be rung up from ECRO if ECRO intends to resume the conversation with the reporter during “keeping connection” would be activated. Presenting and Acquiring Calling Line Identification Reporter’s caller-ID MUST be presented to ECRO unless the reporter dials the restriction code followed with “11x”. ECRO MUST be allowed to acquire the caller-ID even though the reporter dialed with the restriction code. |