Make Calls with normal Telephones and change Settings
Forward external Calls to stay reachable (Call Forwarding for external Numbers)
40
If you like to be reachable always for external calls even if you are not
at home at the moment, use the call forwarding for external numbers.
Thanks to this call forwarding you are able to forward an (exchange
line) telephone number (dialled by an external caller) to another
external telephone number. So these calls can be taken on another
telephone, e.g. a mobile phone, if nobody takes the call internally.
As there may be different reasons for not taking a call, e.g. nobody is
there during a shorter or longer period, we have three different call
forwarding settings: The CF unconditional, the CF on busy and the
CF on no reply.
Forward exchange line number “unconditional“: If you leave the
office, you are able to switch on the CF unconditional. Thanks to that
you can forward your exchange line number (which an external caller
dials) e.g. to your mobile phone.
Forward exchange line number “on busy“: In case of activated CF
on busy the forwarding is done to the external target number if the
called telephone number (dialled by an external caller) is busy.
Forward exchange line number “on no Reply“: If you often com-
mute between office and your customers and do not like to switch on/
off the Call Forwarding each time, you will be able to forward your
exchange line telephone number (that is dialled by an external caller)
e.g. to your mobile phone as a precaution. Then the internal tele-
phones will only ring 20 seconds (configurable) if somebody calls
you. If no telephone is picked up within this time, your mobile phone
will start to ring.
For each of the three types of call forwarding can be configured
another forwarding destination.
If the “CF on busy“ and the “CF on no Reply“ are active at the same
time, both variants will work. Depending on which case will occur - it
is busy or nobody takes the call - the call will be forwarded and even
to different destination calling numbers.
If an CF unconditional is additionally activated to an CF on busy and/
or an CF on no Reply only the CF unconditional will work that means
all the calls will be forwarded to the forwarding destination of the CF
unconditional. The other variants will be ignored, but they are still
switched on. As soon as the CF unconditional is switched off, the
other variants that are still switched on, are active again.
Important: For the configuration of call forwardings for external num-
bers the telephone used needs an authorization (see
and modify the Properties of your own Subscriber Port on page 63
Perhaps you have to wait a little bit longer for the confirmation tone
because the call forwarding is configured in the public exchange.
Note: After a firmware update with firmware version 3.8, it is possible
to set call forwarding for external telephone numbers as configura-
tion-dependent (time control; only via the Web interface in the confi-
guration manager COMset or on the system telephones COMfortel
1100/1500/2500/2500 AB/VoIP 2500 AB via function key or via
menu). For situations where your settings are supposed to apply
even after configuration switchovers, you can use the so-called per-
manent configuration. If permanent configuration is enabled, the con-
figuration-dependent settings (time control) will be overridden by the
permanent configuration settings. The programming code sequences
described here can only be used to change the call forwarding in the
permanent configuration and to enable the permanent configuration
for the corresponding telephone number. As soon as every call for-
warding has been switched off in the permanent configuration, the
permanent configuration for the corresponding telephone number is
switched off and the configuration-dependent settings apply.
Do not mix up the call forwarding for external numbers with the call
forwarding for subscribers or groups. You can use this variants if you
also like to forward internal calls. In this case a forwarding to internal
telephones is also possible, e.g. to a colleague’s telephone or to the
answering machine (see
).
Note: Phone numbers to be rerouted are telephone numbers dialled
by external callers (local PBX base DDI or local
MSN or local analogue telephone number).
If a preferred exchange line was configured for a telephone and the
same number is always transmitted for business calls, you can sim-
plify the configuration of the call forwarding. If you configure a call for-
warding for this group on the corresponding telephone, you can enter
the programming digit sequence without the telephone number to be
forwarded, that means “##96#...“.
On the system telephones COMfortel 1100/1500/2500/2500 AB/VoIP
2500 AB the call forwarding for external numbers can comfortably be
switched via function key or via menu (see manual of the telephone
book).
Forward external Calls to stay reachable (Call Forwarding for external Numbers)
Forward Exchange Line Number “unconditional“ to an external Telephone because you are absent
b ##96m #
*21*
r
#
telephone number to be
forwarded*
*
External telephone number without exchange line access number (also with a direct exchange line telephone).
configure with external target
external telephone number**
**
Exchange line access number 0 + external telephone number (If you use a direct exchange line telephone for the entry, the exchange line access number 0 is left out.)
or short-code dialling number (If you use a direct exchange line telephone for the entry,
**
is preceding the short-code dialling number.)
or
*21#
activate
or
#21#
deactivate
