Siemens C450 IP User Manual

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16
Making calls with VoIP and the fixed network
Gigaset C450 IP / IM-Nord EN / A31008-M1713-R201-3-7643 / telephony.fm / 01.03.2007
Ve
rs
ion 4,
 16
.09.
2005
Making calls with VoIP and
the fixed network
Making an external call 
External calls are those that are made via 
the public telephone network (fixed net-
work) or the Internet (VoIP). You can use 
the talk key 
c when dialling to select what 
type of connection you want to use (fixed 
network or VoIP). One particular connec-
tion type is set as the standard connection 
for your phone. The default is VoIP (this 
can be changed like other settings if 
¤
Enter the required number/IP address 
using the keypad.
¤
Briefly press the talk key 
c if you want 
to make a call via this default 
connection. 
or:
¤
Press and hold the talk key 
c if you 
want to make the call via the other con-
nection type. 
Cancelling the dialling operation
You can cancel the dialling operation with 
the end call key 
a.
Entering an IP address
Via VoIP you can also dial an IP address 
instead of a phone number.
¤
Press the star key 
P to separate the IP 
address number blocks from each other 
(e.g. 149*246*122*28).
¤
If necessary, press the hash key 
# to 
attach the SIP port number of the per-
son you are calling to the IP address 
(e.g. 149*246*122*28#5060).
Ending a call
a
Press the end call key.
Answering a call
The handset indicates an incoming call in 
three ways: by ringing, by a display on the 
screen and by the flashing handsfree 
key
d. 
You can answer the call by:
¤
Pressing the talk key 
c.
¤
Pressing the handsfree key 
d. 
If the handset is in the charging cradle and 
the 
Auto Answer
 function is activated 
(page 14), the handset will take a call 
automatically when you lift it out of the 
charging cradle.
Switching between earpiece and 
handsfree mode
¤
Press the handsfree key 
d to activate/
deactivate handsfree talking during a 
call.
If you wish to place the handset in the 
charging cradle during a call:
¤
Hold down the handsfree key 
d while 
placing the handset in the charging cra-
dle. If the handsfree key 
d does not 
light up, press the key again.
Please note:
– To make a call in handsfree mode, you can 
also press briefly/press and hold the hands-
free key 
d instead of the talk key c. 
– If you use a different GAP-compatible hand-
set to the Gigaset C45, all calls will be made 
via the standard connection, even if you 
press and hold the talk key 
c
. If you want 
to use the non-standard connection to 
make a call, enter a star (*) at the end of 
the number. 
– If you use VoIP to make a call to the fixed 
network, you may also have to dial the area 
code for local calls (depending on the VoIP 
provider). You can avoid this by entering 
the area code in the configuration of the 
base station (via the Web configurator). It 
will then be inserted automatically for local 
calls.