CONTROL METHOD OF OUTTER CHANGING CALL

摘要

The method is to control outgoing call of full electronic private branch exchange using No.7 common channel signalling. The method comprises: (A) connecting signalling channel to a PBX; (B) discriminating that the call processing control request for outgoing in ISDN CCO; (C) requesting setup request to ISDN user part (ISUP); (D) sending initial address message to object branch and receiving address completion message; (E) processing nswering message stand-by; and (F) releasing incoming outgoing signalling.