Auerswald COMpact 4000 Operation Manual page 577

Notes:
When you configure the GSM gateway, you must also input the connection
type of the ISDN connection.
GSM gateways accept external telephone calls automatically. This may
cause call charges for the caller, even if no-one picks up the telephone at the
internal destination.
If the PBX is not connected to the land line, outgoing external calls can only
be accepted via a targeted exchange line access using the phone numbers
entered on the page Routing > VoIP/GSM Routing > Exception numbers
(and the corresponding accesses, also configured on this page) or via a
configured preferred exchange line (exchange line settings for subscribers
or groups).
Ringtone for the PTP connection/bundle mentioned above
The ringtone specifies which sequence of sounds is used to signal external calls to the phone
numbers of the PTP connection to internal subscribers on the PBX.
Notes:
Individual ringtones can be assigned to extension numbers that were input in
different ways.
See the Settings > Ring tones section for information about exceptions to
signalling and sound sequences.
CALL FORWARDING/ROUTING
Call Forwarding via
Network Provider: Calls are forwarded by the central office. This prevents multiple call
channels from being used when the system's own external phone numbers are being
forwarded.
PBX (2nd call channel): The PBX uses an existing, free call channel to forward the call. The
charges for this additional connection established by the PBX are billed to the PBX operator.
COMpact 4000 - Firmware V6.6A - Installation, Operation and Configuration V03 03/2016
Settings
ISDN Connection
PTP Connection Settings
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