Siemens Gigaset S685 IP Manual page 139

Accepting/rejecting call waiting during an internal call
If you receive an external call during an internal call, you will hear the call
waiting tone (short tone). With Calling Line Identification, the caller's number
will appear in the display.
Ending an internal call, accepting an external call
Press the display key.
§Accept§
The internal call is ended. You are connected to the external caller.
Rejecting the external call
Press the display key.
§Reject§
The call waiting tone is turned off. You remain connected with the internal par-
ticipant. The ringer can still be heard on other registered handsets.
Using several handsets
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