Brand: SIEMENS
Category: Control Unit
Document Type: Manual
Language: EN
Brand: SIEMENS
Category: Control Unit
Document Type: Manual
Language: EN
Uploaded: Nov. 21, 2025, 6:30 p.m.
Save call numbers to repertory keys or speed dialing keys. Numbers can be up to 21 digits long. Saving a number overwrites previous content.
| Problem | Check |
|---|---|
| Handset off-hook, no dial tone | Is the connecting cord correctly inserted in the telephone and the wall socket? |
| Dial tone is audible, but dialing is not possible | The telephone is OK. Is the dialing mode correctly set? |
| The other party cannot hear you | Has the mute feature been activated? |
| During the call you can hear regular pulse tones | Your line is receiving charge pulses from the exchange which cannot be recognised by your telephone. Please contact your network carrier. |