Siemens Gigaset CE460 IP R User Manual page 117

You hear an error tone when keying an input
(a descending tone sequence).
Action has failed/invalid input.
¥
Repeat the operation.
Watch the display and refer to the user guide if necessary.
You have forgotten the system PIN or the router password.
¥
If you have forgotten the system PIN, you can reset the base station with the key on the base sta-
tion (page 57).
¥
If you have forgotten the router password, you can reset the base station via the menu (page 57).
You have made a call via VoIP but cannot hear the other participant.
1. Port forwarding is activated on your router, but no permanent IP address has been assigned to your
phone.
¥
Assign the phone a static IP address (page 87) and update the port forwarding settings if nec-
essary (page 76).
2. STUN is enabled on your base station phone or the local SIP port for the base station phone is out-
side the range 5056 - 5071. As the NAT for your router is symmetric, malfunctions can still occur
during outgoing calls.
¥
Disable STUN (page 94) and check the settings for the local SIP port (page 102).
¥
Enter an outbound proxy (if one has been made available by your VoIP provider) and activate
the outbound proxy mode
If the NAT for your router is not the only NAT between the phone and the SIP server (Internet con-
nection via another LAN) and if no outbound proxy is available:
¥
Assign the phone a static IP address (page 87) and enable port forwarding to the phone for the
SIP and RTP port on the router (page 76). If necessary select the local SIP port for the phone so
that it is not in the range 5056 - 5071 (page 102).
You cannot make calls via VoIP. The display shows
¥
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 your base station's cable connection to the Internet.
¥
Check whether the phone is connected to the LAN. For example,set a ping command on the
phone (ping s <local IP address of the phone>). The base station router may not have been able
to assign an IP address to the phone. Check the settings on the router, you may have to activate
the DHCP server.
¥
If a static IP address is assigned to the base station phone, check whether the IP address settings
for the base station phone and base station router are compatible. Please note the following:
– The IP address for the phone must belong to the address block for the router, i.e. the first three
parts of the IP addresses for the phone and the router in subnet mask 255.255.255.0 must be
the same.
– The IP address for the phone must not be assigned to any other LAN subscriber. If the DHCP
server for the router is enabled, no static IP address can belong to the address block that is
reserved for dynamically assigning IP addresses (default setting: 192.168.1.100 –
192.168.1.150)
114
or (page 94).
Auto Always
Server not
Questions and answers
accessible!.