Siemens CX203isdn 사용자 설명서

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).

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).

The number you are calling is busy or your call is not answered:

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).

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Press the display key.
Wait for confirmation from the exchange.

c

Lift the receiver. The connection is established.