Siemens Gigaset S450 IP User Manual page 104

flashes in the display.
Base Search
The handset is set to
Best Base
tion is switched on or within range.
¥
Move the handset closer to the base sta-
tion.
¥
Check the base station mains adapter.
flashes in the display.
Please register
The handset is not registered.
¥
Register the handset (page 72).
Handset does not ring.
The ringer tone is switched off.
¥
Activate the ringer tone (page 62).
You cannot hear a ring/dialling tone from
the fixed network.
Base station's phone cord has been replaced.
¥
When purchasing a new cord, ensure that it
has the correct pin connections (page 11).
The other party cannot hear you.
u
You have pressed the
set is "muted".
¥
Switch on the microphone again (page 23).
When making calls from the fixed network,
the caller's phone number is not displayed
although CLIP (page 22) is set.
Phone number identification is not enabled.
¥
The caller should ask his network provider
to enable Calling Line Identification (CLI).
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 cannot connect to the router and the
phone is assigned a static IP address.
¥
Check on the router whether the IP address
is already being used by another device in
the LAN or belongs to the block of IP
addresses that is reserved on the router for
dynamic address assignment.
¥
If necessary, change the phone's IP address
(page 68).
and no base sta-
(INT) key. The hand-
You have made a call via VoIP but cannot
hear the other participant.
Your phone is connected to a router with NAT/
firewall.
¥
Your STUN server (page 87) or outbound
proxy (page 88) settings are incomplete or
incorrect. Check the settings.
¥
No outbound proxy is entered or the out-
bound proxy mode
(page 88) 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.
is displayed.
accessible!
¥
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 fol-
lows:
¥
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. Set a ping command, for example,
on 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 perma-
nently set IP address is already assigned to
another LAN subscriber. Check the settings
on the router, you may have to activate the
DHCP server.
Appendix
Never is activated
Server not
103