| 摘要 |
PURPOSE:To offer the better service to a station-side caller by detecting an incoming wait tone to the 1st extension of individual incoming registration when a individual cal comes during talking so as to respond to the said station incoming within a predetermined time. CONSTITUTION:The 1st EXT.1 listens to the incoming wait tone, informs that the station incoming to an opposite party during talking within a prescribed time (e.g., 10sec) and applies response specific number (e.g., hooking and specific number) without hooking on for the response to the station incoming call such as end of call or temporary retention as shown in a known technology. A time collation circuit TCMP uses the special number, collates a retistered time in the MM and gives connection command between the 1st extension EXT.1 and the said trunk line to attain the talking with the trunk line. Moreover, when no response dial comes from the 1st extension EXT.1 even when a prescribed time is elapsed, a slide incoming control is attained according to the predetermined priority in the path shown in figures 2, 3. |
