Operation Manual

Functions

CCNR requests are deleted from the telephone system after 60 min. This period of

time depends on the public exchange office if external subscribers are to be called.

Requirements: In case of external call-backs the CCBS feature must be supported

and enabled by your own network provider as well as the network provider of the

called subscriber.

Completion of Call on No Reply (CCNR)

If the destination subscriber does not answer a call, the connection will be

established automatically as soon as the destination subscriber has made another

call. The CCNR feature must be enabled by the caller. When the destination

subscriber hangs up, the caller receives a call signal. Upon picking up the receiver,

the connection to the destination subscriber is established without any further dialling

necessary. The automatic connection is then complete.

Initiation of a CCNR depends on the kind of terminal used:

 If a DTMF dialling terminal is used, the automatic call-back can be enabled

by entering the following key sequence(s):

enabling of CCNR:



disabling of CCNR:





If an ISDN terminal is used and if the CCNR feature is supported, the automatic

call-back can be enabled using a speed dialling key. For further information,

please consult the User's Manual of the ISDN terminal.

If an analogue terminal is used, you hear a positive confirmation tone as soon as the

CCNR request has been registered within the telephone system. In the event of an

error, you will hear an error tone. If the feature is not supported, you hear a negative

confirmation tone.

CCNR requests are deleted from the telephone system after 60 min. This period of

time depends on the public exchange office if external subscribers are to be called.

Requirements: In case of external call backs the CCNR feature must be supported

and enabled by the caller’s network provider and the network provider of the

subscriber called.