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Appendix Questions and answers
Gigaset C470-475 IP / EN for IM-Ost / A31008-xxxx-xxxx-x-xxxx / appendix.fm / 16.8.07
Version 2.1, 08.01.2007
Your phone is connected to a router with NAT/firewall.
¥ Your STUN server (page 124) or outbound proxy (page 125) settings are incomplete or incorrect.
Check the settings.
¥ No outbound proxy is entered or the outbound proxy mode Never is activated (page 125) and your
phone is connected to a router with symmetric NAT or a blocking firewall.
¥ Port forwarding is activated on your router, but no permanent IP address has been assigned to
your phone.
You cannot make calls via VoIP. Server not accessible! is displayed.
¥ First wait a few minutes. This is often a short-term event that corrects itself after a short time.
If the message is still displayed, proceed as follows:
¥ Check whether your phone's Ethernet cable is correctly connected to the router.
¥ Check your router's cable connection to the Internet.
¥ Check whether the phone is connected to the LAN. Send a ping command, e.g. from your PC, to
the phone (ping s <local IP address of the phone>). It may be that no IP address could be assigned
to the phone or a permanently set IP address is already assigned to another LAN subscriber. Check
the settings on the router, you may have to activate the DHCP server.
You cannot make calls via VoIP. Either Provider registration failed! or Registration failed is shown.
¥ First wait a few minutes. This is often a short-term event that corrects itself after a short time.
The message may still be displayed for the following reasons:
1. The personal VoIP access data (Username, Authent. Name and Authent. Password) you have entered
may be incomplete or wrong.
¥ Check your information. In particular, check your use of upper and lower case.
2. The general settings for your VoIP provider are incomplete or incorrect (incorrect server address).
¥ Start the Web configurator and check the settings.
The phone does not dial an entered number. The display shows Not possible!.
The number may be blocked (dial rule).
¥ Open the Dialling Plans Web page of the Web configurator and delete or deactivate the block.
You cannot establish a connection to the phone with your PC's Web browser.
¥ When establishing a connection, check the phone's local IP address that has been entered. You can
check the IP address on your handset.
¥ Check the LAN connections for the PC and phone.
¥ Check that your phone can be reached. Send a ping command, e.g. from your PC, to the phone
(ping s <local IP address of the phone>).
¥ You have tried to reach the phone via a secure http (https://...). Try again with http://....
You cannot be reached for calls from the Internet.
¥ There is no entry for your phone in your router's routing table. Check the settings for the NAT
refresh time (page 125).
¥ Your phone is not registered with the VoIP provider.
¥ You have entered the wrong user ID or an incorrect domain (page 123).
No firmware update or VoIP profile download is carried out.
1. If Currently not possible! is displayed, the VoIP connections may be busy or a download/update is
already being carried out.
¥ Repeat the process at a later time.
2. If File corrupted! is displayed, the firmware or profile file may be invalid.
¥ Please only use firmware and downloads that are made available on the preconfigured Sie-
mens server (page 142) or at www.siemens.com/gigasetcustomercare
.
VoIPon www.voipon.co.uk sales@voipon.co.uk Tel: +44 (0)1245 808195 Fax: +44 (0)1245 808299
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