Siemens CX203isdn - Manual (Page 26)

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Making calls
SX303/353isdn / englisch / A31008-X353-B100-2-7619 / telephony.fm / 14.11.2005
You can set up your base station so that after lifting the receiver or pressing the
handsfree key d a list of all available send MSNs is displayed (page 95).
Callback on busy (CCBS) / on no answer (CCNR)
Precondition: The exchange supports this service.
Callback on busy – CCBS (Completion of calls to busy subscriber)
The user you are calling is currently making a call. Automatic callback saves you making
repeated attempts to dial the number.
Callback on no answer – CCNR (Completion of Calls No Reply)
If the user you are calling does not answer you can arrange automatic callback. As soon
as the user you require has finished a call and the line is free again you will be called
back. The callback request is automatically cancelled after about 2 hours (depending on
the exchange).
Activating callback
The number you are calling is busy or your call is not answered:
Accepting a callback
The base station rings with a special ringer tone and the display shows the callback
number.
i
◆ The temporarily set send MSN is displayed as the phone number for
the person you are calling.
◆ To make this function easier to use, you can also set one of the
function keys accordingly (page 115).
[RRRRRRRRRRRRRRRRRRRRRRRRRR] CALLBCK Press the display key.
Wait for confirmation from the exchange.
c
Lift the receiver. The connection is established.