Base Search flashes in the display.

The handset is set to Best Base and no base station ¥ is switched on or within range.

Move the handset closer to the base sta-

¥tion.

Check the base station mains adapter.

Please register flashes in the display.

The¥ handset is not registered. Register the handset (page 56).

Handset does not ring.

The¥ ringer tone is switched off. Activate the ringer tone (page 63).

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.

You have pressed the u (INT) key. The handset ¥ is "muted".

Switch on the microphone again (page 22).

When making calls from the fixed network, the caller's phone number is not displayed although CLIP (page 21) 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.

Appendix

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 70).

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 81) or outbound proxy (page 81) settings are incomplete or

¥incorrect. Check the settings.

No outbound proxy is entered or the out- bound proxy mode Never is activated (page 81) 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 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.

95