Call Forwarding
GENERAL SETTINGS FOR CALL FORWARDING
Call forwarding method
Call forwardings at the exchange line are configured and performed in different ways. The exchange line, router or the provider determines which of the call forwardings listed below can be used.
Keypad
The call forwarding is controlled in the PTMP exchange line. The digit sequence depends on the provider or router.
Call Deflection
Call forwarding shall be executed directly by the exchange line. The PBX sends a corresponding message with new destination number to the exchange line. Accordingly, the call is forwarded to the new destination by the provider/exchange line.
Note: Currently, providers support Call Deflection only at the SIP Trunk.2. B channel
The call forwarding is performed by the PBX during a call. It is possible for all exchange line types but requires a free voice channel and the number of the caller cannot be displayed unless CLIP no scrrening is used which is not supported by many providers.
For call forwarding via the PBX, use any available call channel
Requirements:
• Enabled call forwarding method 2. B channel
When an external phone number is forwarded, the call can be forwarded via a call channel on any of the other ports.
Note: A call can only be redirected via a call channel on the same port. The probability that the call cannot be forwarded because the channels are busy is therefore higher.Renew call forwarding at PBX reboot
When rebooting the PBX, the saved data of the call forwarding is renewed.
Important: In Switzerland, the configuration of a call forwarding is chargeable. To avoid costs, the check box must be disabled.Delay time for Call Forwarding on no reply in the PBX
This delay time for external numbers specifies the time (in seconds) after which a call is forwarded if the called subscriber does not respond.
Note: The waiting time applies only to call forwarding that was set up using the PBX. If the network provider has configured the call forwarding function, the waiting time depends on their settings and cannot be configured in the PBX.Routing via exception numbers (VoIP + GSM)
Requirements:
• Configured exception numbers (page Routing > VoIP and GSM Routing > Exception numbers)
• Enabled call forwarding method 2. B channel
The device checks whether the destination number involved in call forwarding for external numbers has been set up as an exception number. If so, the call is sent along the configured path. If the destination number has not been entered in the routing table, the call to be forwarded is sent either via a free call channel that is assigned to the port or via any free call channel (For call forwarding via the PBX, use any available call channel).
Use CLIP no screening for call forwarding
Requirements:
• CLIP no screening enabled for this VoIP account
In the case of call forwarding via the external connection, the phone number of the caller is transmitted to the destination of the call forwarding. In the case of an anonymous call, the function acts as if not enabled.
Note: When switched off, the phone number in the PBX is transmitted to the call forwarding destination.CALL FORWARDING UNCONDITIONAL (CFU)
Call forwarding available in exchange line
If the exchange line has a CFU, this function can be enabled.
Note: If the exchange line does not have a CFU, this function must be disabled.CALL FORWARDING IF BUSY (CFB)
Call forwarding available in exchange line
If the exchange line has a CFB, this function can be enabled.
Note: If the exchange line does not have a CFB, this function must be disabled.CALL FORWARDING NO REPLY (CFNR)
Call forwarding available in exchange line
If the exchange line has a CFNR, this function can be enabled.
Note: If the exchange line does not have a CFNR, this function must be disabled.