Installation 2 - 36 OKIFAX 5300/5600Service Manual, P/N 59278301TEL/FAX Automatic Switching (Technical Function 09)This function is used for the purpose of TEL/FAX automatic switching as discussed below.It assumes that an optional handset is connected to the machine.(1) If the machine detects a call with a CNG signal indicating an auto send facsimile call, it startsan automatic document receiving operation.(2) If machine detects a call without a CNG signal, machine generates the buzzer sounds as atelephone call. The calling person can hear a “ring back” tone within a predetermined time.If the operator at the called side does not lift the handset within the predetermined time, themachine automatically starts a document receiving operation.Voice conversation will automatically be available through the internal handset by lifting up thehandset while the call buzzer is sounding.Note: In this mode, following four settings are required.1: The predetermined time is selectable between 20 or 35 sec.(Function program No. 10)2: No ringing signal is sent to the external telephone handset.
