Brand: SIEMENS
Category: Telephone
Document Type: Manual
Language: EN
Brand: SIEMENS
Category: Telephone
Document Type: Manual
Language: EN
Uploaded: Nov. 21, 2025, 7:25 p.m.
None
Answering Calls: Lift the handset or press the Speaker key. The caller number/name is displayed.
Making Calls: Lift the handset, enter the internal or external number. For on-hook dialing, press the Speaker key first.
During a Call: Use keys for functions like muting the microphone, transferring, conferencing, or putting calls on hold.
Basic Functions: Access functions like redialing, call forwarding, and checking call charges through specific keys or menus.
Settings: Adjust ring volume, ring tone, speakerphone, and display contrast using specific keys.
| Problem | Possible Cause | Possible Response |
|---|---|---|
| Pressed key does not respond | Key is stuck | Check whether the key is stuck. |
| Telephone does not ring | "Do not disturb" function activated | Deactivate "Do not disturb" (page 68). |
| Cannot dial an external number | Telephone is locked | Unlock the telephone (page 70). |
| Invalid entry | Wrong number/code | Enter the correct number/code. |
| Not authorized | Disabled function | Ask service personnel to enable the function. |
| Cannot be reached | Station number does not exist or is unplugged | Enter a correct station number. Try calling later. |
| Invalid station number | Incorrect number entered | Enter the correct number. |
| Key memory is full | All memory locations for external stations are in use | Try again later on. |
| Currently not possible | Function temporarily unavailable | Press the mute key during the call. |
| Incomplete | Too long to enter data | Try again later on. |
| Vacant | No number or function assigned to a key | Program the key (page 29, 59). |
| No names entered | Internal phone book has no entries | Store name with station and speed-dial number (page 42). |
| Currently busy | External trunk is busy | Try again later on. |
| Park slot is empty | No park slot available | Enter a different park slot. |
| All park slots busy | No park slot available | Try again later on. |
| Incorrect PIN | Wrong code for locking/unlocking | Enter the correct code (page 70). |
| Re-entered PIN invalid | Wrong code for changing PIN | Enter the correct code (page 72). |
| Telephone lock active | Telephone is locked, external number dialed | Unlock the telephone (page 70). |
| Credit is over | Exceeded call charge limit | Ask service personnel to change call charge limit. |
| Caller replaced handset | Call pick-up no longer possible | N/A |