Configuring Call Forwarding Via Voip - Siemens Gigaset C470 IP User Manual

Web configurator – configuring the telephone via a PC
Use random ports
Click if you do not want the phone to use fixed ports for
Yes
rather to use any free ports.
The use of random ports makes sense if you want several phones to be operated on the
same router with NAT. The phones must then use different ports so that the router's NAT
is only able to forward incoming calls and voice data to one (the intended) phone.
If you click No, the phone will use the ports specified in
¤
Now click to save your settings.
Set

Configuring call forwarding via VoIP

If you are toggling calls via VoIP connections, you can connect the two external callers (pro-
vider-dependent). You can configure settings for this type of call forwarding.
¤
Open the following Web page:
¤
Configure the following settings in the
Transfer Call by On-Hook
If you activate Yes, the external parties you are toggling between will be connected
when you press the end call key a. Your connections with the parties will be termi-
nated.
To learn how to forward a call when you have activated
Preferred Refer To
Define the protocol (the contents of the "Refer To" information) that should be used with
preference when forwarding calls:
Target's contact info
This protocol is recommended for "closed" networks (internal company and business
networks).
Original URL
This protocol is recommended when the base station is connected to the Internet via a
router with NAT.
Automatic Refer To
If you activate Yes, the base station will attempt to determine the best protocol automat-
ically.
If the base station cannot determine the best protocol, it will use the protocol defined
in Preferred Refer
¤
Now click Set to save your settings.
132
Settings
To.
Configuring call forwarding via VoIP
SIP port
¢ ¢
Telephony Advanced
area for call forwarding via VoIP:
Call Transfer
No,
and port, but
SIP port RTP
and
RTP port.
Settings.
please see page 45.