Message Function
Explains how to set up and manage message functions between system telephones for communication.
Simplex Intercom
Describes how to establish intercom connections between system telephones without active acceptance.
Inhouse Calling
Explains the procedure for making internal calls to other subscribers within the PABX system.
External Calls
Details how to establish external calls using the PABX, including selecting ISDN connections.
Call-by-Call Management
Explains the Call-by-Call feature, allowing users to select different providers for outgoing calls.
Team Call
Describes how to configure and manage teams for group calling and internal communication.
Forwarding a Call
Details how to forward calls, including options for prior notice, connecting callers, and enquiry calls.
Automatic Call-Back
Explains how to request automatic call-backs when a subscriber is busy or not available.
Three Party Conference
Explains how to set up and manage three-party conference calls involving internal and external participants.
Call Rerouting
Explains the different types of call rerouting (immediate, delayed, on busy) and how to activate/delete them.
Follow Me
Describes how to configure call rerouting to another inhouse telephone (Internal Follow Me) and external configurations.
Door Intercom Module (TFE)
Details the connection and operation of the Door Intercom Module (TFE), including call signaling and door opener functions.
Multifunctional Device
Explains how to use multifunctional devices with the PABX and transmit service identifiers for different call types.
Connection/Call Charges
Covers the storage and output of call data records, including charge accounts for internal subscribers.
Keypad Function
Explains how to use the keypad function for direct transmission of information to the exchange for feature activation/deactivation.
Need help?
Do you have a question about the C88m and is the answer not in the manual?
Questions and answers