| 摘要 |
PURPOSE:To shorten a procedure control time required for the operation of the titled facsimile equipment by issuing a procedure shortcut indicating signal in a no signal period from the time of connecting a receiving-side line to the time of issuing a control signal, and using a high speed modem to send a control procedure signal upon a response from the receiving side. CONSTITUTION:There is a non-signal period of usually 1.7-2.5sec from the time of connecting line to the receiving side to the time of issuing a control procedure signal CED. Therefore, this non-signal period is utilized by the signal sending side to add a procedure shortcut indication signal HUC to control a procedure signal CNG and to send them together therefore. This procedure shortcut indication signal HUC is a non-standard signal that does not comply with CCITT T30 standard and is sent as a frame constituent of the HDLC by a low speed modem. When the receiving signal receives this procedure shortcut indication signal, it sends initial identification signals, NSF, CSI instead of a procedure control signal CED to reply that the procedure is transferred to procedure shortcut by a control procedure signal NSF. In such a way, the sending side can be transferred to the high speed modem to execute a considerable shortcut time..
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