Make Calls with normal Telephones and change Settings
Call Somebody
16
Important: For the start of a private call without PIN entry the tele-
phone needs a special authorization (see
the Properties of your own Subscriber Port on page 63
). The costs
are charged to the telephone in use.
Important: The project related charging of calls needs a special
release by the dealer. If this has not been done, you would be able to
start calls as described, but the project numbers would not be trans-
ferred into the call data.
Important: In any case, the external phone number must be dialled
with the corresponding city code, even if it is the local prefix. The spe-
cial numbers provided by the VoIP provider for checking one’s
account status or dialling usually do not include a local prefix.
You might wait longer for a connection if you start calls via VoIP.
Emergency calls via VoIP are currently not supported by all provid-
ers. This is affecting the connection to the emergency call center as
well as the localisation information of the caller.
Fax sending via Voice over IP is currently not reliable.
Some providers might suggest that Internet telephony is free of
charge. The real cost should be checked in the tariff tables of the cor-
responding provider
8
. The connection to a fixed-line connection is
made via gateways (connection computer) so the location of the
gateway is important for the call charges. This is especially true for
international calls and if the gateway is located in your home country
then the cost might exceed the fixed-line cost.
The voice quality and also the reliability of Voice over IP depends on
the quality of the used Internet connection in a high degree as well as
on the quantity of the current data transfer volume.
For outbound calls via VoIP no callback (CCBS or CCNR) is possible.
*
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.)
Start external Call with Project Assignment
b ##93 p *
r
g
project number
2- to 6-digit
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.)
conversation
External Call with specific Telephone Number (Exchange Line Selection)
b ##96 m
*
r
g
own external telephone number
to be transferred *
*
external telephone number without exchange line access number (also in case of the entry with a direct exchange line telephone)
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.)
conversation
Select a specific VoIP Account for the next external Call
b n
r
g
Account number*
*
Internal telephone number of the VoIP account (If you use a direct exchange line telephone for the entry,
**
is preceding the telephone number)
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.)
conversation
8
Precondition for free of charge calls is a broadband Internet con-
nection with the corresponding tariff (e.g. DSL flatrate) that is
chargeable. Calls are only free of charge if they are made with sub-
scribers of the same VoIP provider or the network of a partner. This
information is available at the corresponding provider.
