setting, but may be enabled via configuration.
Call waiting can only occur simultaneously in the system for a limited number of analogue
connections. If call waiting is already operating with this maximum number of call-waiting
tones on analogue connections, additional call-waiting callers will get the busy tone.
If you hear the call-waiting tone during a call, you can take that call and transfer the ongo-
ing call An operating procedure allows transfer of the ongoing call and acceptance of the
call waiting. The following conditions apply here:
• Every dialled number is accepted by the system.
• After the operation procedure, the subscriber and the call-waiting subscriber are immedi-
ately connected to each other (no acknowledge tones).
• Transfer to one's own number is possible, then call waiting.
• Internal, external target subscribers as well as teams can be dialled.
• A return call occurs in case of invalid or engaged target number.
• If the subscriber is free, a return call is made according to the target subscriber's defined
period.
• With transfer to a team number, there is no return call in case of an engaged or unreach-
able team
• With transfer to a team number only return call after time is supported.
ISDN terminals
Configuration and operation of call waiting occurs as described in the users' guides of the
corresponding terminals. ISDN terminals use their own tones to signal call waiting.
Note
Call waiting is not possible:
• for conference calls
• for do not disturb (analogue terminals)
• for announcements
• for room monitoring
• for terminals, for which the Data Protection performance feature is set up (e. g. fax,
modem)
• in analogue subscriber's dialling status (the receiver has been picked up, but there is
no connection yet)
• for current call-waiting protection
bintec elmeg GmbH
14 Numbering
elmeg hybird 120 / hybird 130
197
