• The SP-PHONE button light shows the current status as follows:Off: The voice is heard through the handset.On: The voice is heard through the speaker and the handset.• This feature is only available with certain proprietary telephones, and requires systemprogramming.1.3.46 OHCA (Off-hook Call Announcement)During a conversation, you can be informed of a waiting call with a voice announcement. You can hear thecaller’s voice through the built-in speaker, and talk to the caller while the current call is continued using thehandset.To set/cancel for intercom calls (Manual Call Waiting)Off-hook. Enter 0 or 2. On-hook.PTNo callOHCA02OREnter 731.3 17 C.Tone• OHCA is only available with certain digital proprietary telephones.• OHCA is not available for outside calls; only call waiting tone can be set (refer to "1.3.13 CallWaiting Tone").• A PDN extension can only receive OHCA or Whisper OHCA from the corresponding SDNextension. When a call is made from another extension, a PDN extension will receive a callwaiting tone. (® 1.3.50 PDN (Primary Directory Number)/SDN (Secondary DirectoryNumber) Extension)• For information about answering a waiting call, refer to "1.3.12 CALL WAITINGFEATURES".1.3.47 One-touch DialingYou can store a phone number into the flexible button for one-touch operation.108 Operating Manual Document Version 2010-081.3.47 One-touch Dialing
