Answers to
frequently asked questions

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Analog Phones


  • Base reset
    • Unplug the power-supply unit from the socket.
    • Press and hold down the paging key on the base station.
    • Plug in the power-supply unit again.
    • Keep the paging key on the base station pressed.
    • Release the paging key after 3 seconds.

    PLEASE NOTE! The entire contents of the memory will be deleted. All portable handsets will be deregistered. The system code will be reset to 0000.

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  • Notes on Caller ID (CID)

    By default, the number of the caller is shown in the display of your Gigaset telephone. You do not have to make any other settings on your Gigaset telephone. However, if the caller's number is not displayed, this can be due to the following:

    - You have not ordered CID from your network provider or
    - Your telephone is connected through a PBX that does not transmit all information.

    Is your telephone connected through a PBX/gateway?
    You can establish this by checking for an additional device connected between your telephone and house connection, e.g., a PBX, gateway etc.
    In most cases, simply resetting this device will remedy the situation:
    - Briefly disconnect the power plug of your PBX.
    - Re-insert the plug and wait for the device to restart.

    If the caller number is still not displayed:
    Check the CID settings of your PBX and activate this function if necessary. In the user guide for the device, search for the term "CID" (or an alternative term such as "phone number transmission", "caller ID", ..).

    If necessary, contact the device manufacturer. If this does not resolve the problem, it is possible that your network provider does not support the CID service for this number.

    Have you ordered the CID service from your network provider?
    Check whether your provider supports Caller ID (CID) and that the function has been activated for you. If necessary, contact your provider.

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  • Why isn't there any picture in the display during an incoming call?

    To see a picture in the display in addition to the number from an internal caller you have to achieve the following settings:


    • At least one picture must be stored in the Media pool from the handset/base (via Gigaset QuickSync)
    • A directory entry must be dedicated to a picture in the directory entry options.
    • The caller must show his number for outgoing calls.
    • The Network provider must support the CLIP function and this function must be activated

    Important Note:


    If a handset with picture-CLIP-function is registered to an older base station it could be possible that there is no picture shown in the display due to incompatibility reasons.


    In these cases please have a look at our compatibility database and choose your combination to see if it is possible or not.


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  • For which purposes can I use the integrated Bluetooth functionality?
    • Connecting Bluetooth headsets Exchangeing adressbook entries as VCards
    • Receiving adressbook entries from a second Bluetooth device (e.g. mobile, PDA)
    • Sending adressbook entries to a second Bluetooth device (e.g. mobile, PDA)
    • Copying contacts from the PC to the adressbook of the handset using the QuickSync Software


    Indications regarding the different functions:


    Headset operation:

    An outgoing call will not be transfered to the Bluetooth headset automatically. The connection to the call party has to be initiated as usual using the on-/off hook key at the handset or the handsfree key. Please press the on-/ off-hook key at the Bluetooth headset briefly to transfer the call from the handset to the headset

    The Gigaset handset supports the Bluetooth Headset- and Handsfree Profile. Please make sure your Bluetooth headset supports one of these profiles too.


    VCard transfer:

    If you want to receive entries from a mobile phone or an PDA this can lead to problems, if you try to send a block of entries.

    Fotos attached to a VCard entry will not be accepted from the Gigaset handset, due to restricted storage in the handset.

    In some cases it leads to problems, if a foto is assigned to the VCards. In this case the only possibility is to send the entry without foto.

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  • Which Bluetooth profiles are supported by the SL78H / SL400H / S810H / S820H / S850H / SL910H handset?

    Whether Bluetooth® devices can communication with each other is a profile question. It is important that they support and use the same Bluetooth® profile for different functions.

    The Gigaset SL78H / SL400H / S810H / S820H / S850H / SL910H handsets are working with the Bluetooth® 2.1 standard  and support the following profiles:

    Serial Port Profile (SPP) for data communication with a PC.
    Headset Profile (HSP) and Handsfree Profile (HFP) for communication with a headset.
    OBject EXchange Profile (OBEX) for the transfer of address book entries (vCards).

    Known BT-Headsets, that do not work correctly with S810H, S820H and SL400H:
    - Jabra Wave BT 3.0 (100-93050000-60)



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  • Is is possible to update via Bluetooth?

    Updating via Bluetooth is not supported. Please connect the handset to your PC using an USB data cable.

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  • How to connect a Gigaset handset with the PC using a Bluetooth connection?

    The connection between you PC and the Gigaset handset depents in your Bluetooth device at the PC.

    To get a connection to the Gigaset it is necessary to activate the Bluetooth function at the handset.

    To that it is necessary to disconnect all cables from the handset and also not to charge the device in the charging cradle while you want to work with Bluetooth.

    You next have to pair your Gigaset handset with your PC. To do that start you Bluetooth software at your PC and search for new Bluetooth devices. The Gigaset will be shown, preconditioned it is in the radio radius of max. 10 meters to your PC.

    After the PC has found the handset you have to enter an security code. As a rule you get several possibilities for the security code. Please select the on which offers you to enter the code manually. Then enter a code, like 0000.

    Right now a window appears in the handset which prompts you to enter the code. Please enter here the same code as you selected before: 0000

    The pairing now has finished.

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Gigaset S820H - FAQ Topics


  • Bluetooth
  • F

  • First steps for troubleshooting
  • N

  • Notes on Caller ID (CID)
  • P

  • Picture CLIP
  • R

  • Reset procedures