Call forwarding
Call forwarding allows calls to be forwarded, e.g. to a smartphone.
The PBX differentiates between call forwarding based on the call forwarding type (immediate, busy, no answer) and the type of phone number to be forwarded (users, groups and external numbers).
Note for unregistered phones:The call forwarding type “on no reply” also works if an IP phone assigned to the user is not registered. In this case, the configured call forwarding is carried out immediately. Setting up call forwarding when there is no reply is therefore useful, for example, for home offices with COMfortel SoftPhone on the PC or for other VoIP telephones that are temporarily not registered.Call forwarding type
As there can be many different reasons for not accepting a call, for example, the user in question is not present or is on another line, three call forwarding types are provided:As there can be many different reasons for not accepting a call, for example, the user in question is not present or is on another line, three call forwarding types are provided. A different destination can be configured for each call forwarding type.
The various call forwarding types work individually or in combination as follows:
•immediately: The phone being called does not ring. The call is forwarded immediately.
•on busy: The call is forwarded immediately but only if the phone being called is busy.
•on no reply: The phone being called rings for a certain time. If the call is not accepted, it is forwarded.
•on busy and on no reply at the same time: Both types are effective. The call is forwarded to the different, appropriate telephone numbers, depending on which situation occurs – the telephone is busy or nobody answers.
•immediately is enabled in addition to on busy and/or on no reply: all of the calls are forwarded immediately. In this case, the other call forwarding types are overridden, but remain enabled.
−immediately is disabled: the other types that are still enabled are again applicable.
Multi-level call forwarding, call forwarding loops
If call forwarding is also configured for the internal destination (user/group) of call forwarding, this is carried out as configured. The COMtrexx therefore also carries out call forwarding in two or more stages (also known as cascading).
1. Example: If user A has call forwarding to user B and this in turn to user C (A → B → C), call forwarding is carried out in several stages when a call is made to user A (A → B → C).
To prevent call forwarding loops, the COMtrexx only considers a user/group once within a call.
2. Example: If user A has call forwarding to user B and vice versa (A → B → A → B ...), call forwarding to user A is only carried out on one level (A → B).
As part of a group, the COMtrexx considers a user within a call one more time, as part of several groups also several times. To prevent call forwarding loops, the COMtrexx checks in this case whether the user is forwarding group calls:Call forwarding | Settings | CF on group call
3. Example: If groups X, Y and Z have multi-level call forwarding for no reply (X → Y → Z), user A is called as a logged-in member of all three groups for the entire call period.
4. Example: If user A has call forwarding when not logged in to group X (A → X) and does not forward group calls, user A is called as a logged-in member of group X for the entire call period. But: If user A redirects group calls, user A is no longer called during the group call.
Call Forwarding for users
When call forwarding for users is used, internal and external calls to single users can be rerouted to other internal phone numbers or external connections. In this way, the user in question or their substitute can take these calls on another phone.
Call forwarding for users makes sure that the user in question or their substitute is always available at his own phone number, even if the user cannot take a call on his own phone.
For call forwarding to an external number: The external destination must be reachable for the user. For this, the exchange line routing settings (with block- and allowlist) that apply to the user are checked before a call is forwarded.
Further help under Exchange line routingNote: To avoid having to use a second call channel in the case of call forwarding to an external destination, the PBX tries to reroute the call directly at the network provider using call deflection. The following requirements must be fulfilled for this purpose: 1. The incoming call was made via a VoIP network provider supporting call deflection. 2. The rerouted phone number is neither called as a group member, nor is it required to consider parallel calling.Call Forwarding for groups
When call forwarding for groups is used, internal and external calls to a group can be rerouted to other internal telephones or external connections. In this way, a person that is not a member of this group and therefore cannot log in, can receive these calls.
Call forwarding for groups makes sure that someone is always available on the group number, even if the calls cannot be taken by a member of the group.
For call forwarding to an external number: The external destination must be reachable for the user. For this, the exchange line routing settings (with block- and allowlist) that apply for the group are proved before a call forwarding is executed.
Further help under Exchange line routingNote: To avoid having to use a second call channel in the case of call forwarding to an external destination, the PBX tries to reroute the call directly at the network provider using call deflection. The following requirements must be fulfilled for this purpose: 1. The incoming call was made via a VoIP network provider supporting call deflection. 2. The rerouted phone number is neither called as a group member, nor is it required to consider parallel calling or fallback on busy.Call Forwarding for external numbers
When call forwarding for external numbers is used, calls directed to an external number (dialled by an external caller) are rerouted to other external connections. In this way, these calls can be taken on another telephone, for example, on a smartphone if no one can take the call internally.
Note: If you want to also forward internal calls, use call forwarding for users or for groups instead of call forwarding for external numbers. This also allows calls to be forwarded to internal telephones.Note: The function can be configured with a VoIP exchange line via keypad codes (depending on the provider) via the keypad of the phone.Configuration
Call forwarding for users:
•Enabling the following authorisations separately for the involved internal users: Controlling of the PBX via phone, Configuring CF (sub) to ext. number
−User > Phone numbers > > Configure > Authorisations
•Enabling the authorisations for the involved internal users configuration-dependent/time-controlled:
−User > Profiles > > Authorisations
•Configuring, enabling call forwarding separately for users and making the following additional settings: only external calls, CF on group call
−User > Phone numbers > > Reachability
•Configuring, enabling call forwarding configuration-dependent/time-controlled for users and making the additional settings.
−User > Profiles > > Reachability
Alternative functions on an internal phone
Note: For configuring using a character string on an internal phone, the user needs an authorisation for controlling of the PBX.•Configuring, enabling and disabling unconditional call forwardig
•Configuring, enabling and disabling call forwardig if busy
•Configuring, enabling and disabling call forwardig on no reply
•Configuring and enabling call forwarding on an analogue T-Net phone via menu/T-Net function key (see phone manual)
Description of operation under Call Forwarding for usersCall forwarding for groups:
•Enabling the following authorisations separately for the involved internal users: CF (groups) / Follow-me, Controlling of the PBX via phone, Configuring CF (sub) to ext. number
−User > Phone numbers > > Configure > Authorisations
•Enabling the authorisations for the involved internal users configuration-dependent/time-controlled:
−User > Profiles > > Authorisations
•Configuring, enabling call forwarding separately for groups and making the following additional settings: only external calls, CF on group call
−Groups > Phone numbers > > Reachability
•Configuring, enabling call forwarding configuration-dependent/time-controlled for groups and making the additional settings.
−Groups > Profiles > > Reachability
Alternative functions on an internal phone
Note: For configuring using a character string on an internal phone, the user needs an authorisation for controlling of the PBX.•Configuring, enabling and disabling unconditional call forwardig
•Configuring, enabling and disabling call forwardig if busy
•Configuring, enabling and disabling call forwardig on no reply
Description of operation under Call Forwarding for groupsCall forwarding for external numbers:
•Enabling the following authorisation separately for the involved internal phones: Features to be configured by the network provider (CF, key pad)
−User > Phone numbers > > Configure > Authorisations
•Enabling the authorisation for the involved internal phones configuration-dependent/time-controlled:
−User > Profiles > > Authorisations
•Configuring and enabling call forwarding (if necessary, configuration-dependent/time-controlled)
−Exchange lines > Exchange line routing > Call distribution for
•Making additional settings for call forwarding separately for providers.
−Exchange lines > Providers and Accounts > > Settings
•Making additional settings for call forwarding separately for accounts.
−Exchange lines > Providers and Accounts > > Settings > Miscellaneous > Expert configuration
Alternative functions on an internal phone
•Configuring, enabling and disabling unconditional call forwardig
•Configuring, enabling and disabling call forwardig if busy
•Configuring, enabling and disabling call forwardig on no reply
Description of operation under Call Forwarding for external numbers