Operation Manual
Functions
15
Hold
There are two ways to place incoming external calls on hold: either externally within
the exchange or internally within your telephone system. The setting in which way
calls are put on hold was performed by the installer of your telephone system.
One of the differences is that if a call has been placed on hold within the exchange,
the external caller hears the music-on-hold selected by the network provider. During
the hold within your telephone system, your own music-on-hold is heard.
Conference
When a subscriber has a call on hold and an active call, he/she can set up a three-
way conference. In this case, the three subscribers will be interconnected within the
telephone system. A maximum of four internal three-way conferences is possible. If
the subscriber initiating the conference hangs up, all connections will be terminated.
If one of the other subscribers hangs up, the connection between the two other
subscribers remains active.
If analogue terminals are used, a three-party conference can be initiated via the
following key sequence:
Initiate conference
If ISDN telephones are connected, this feature can be enabled by the terminal
itself via speed dialling keys. For enabling this feature, please consult the User's
Manual for your ISDN telephone.
In case of two external subscribers, the conference can be initiated within the
exchange, provided that both have been switched via the same S0 connection. It
should be noted in this regard that additional charges can be levied by the network
provider for a three-party conference within the exchange.
Terminal Portability (TP)
If you wish to continue an active call from another part of the building, you can park
the call within the telephone system and remove it from another extension. After
initiating parking, you can disengage parking within three minutes at another
extension and thencontinue the call with the person you are calling.
To programme this feature at an ISDN terminal, please consult the User's Manual
for your ISDN telephone.
If analogue terminals are used, this feature can be initiated as follows:
parking a call:
two-digit parking number