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Store more contacts on your fixed-line telephone using the Internet-Box

Store more contacts on your fixed-line telephone using the Internet-Box



With Swisscom’s Internet-Box, you can store up to 250 contacts on your fixed-line telephone (HD phone). These are stored centrally and can be accessed on any handset in the house. With Home App, you can also transfer your contacts from your smartphone to your HD phone, or transfer them to the Internet-Box’s virtual directory. But what if 250 contacts are not enough?


If you wish to store more than 250 contacts on the Internet-Box, there is a range of options. In June 2017, community user Walter_Wp compiled four alternatives to storing contacts on the Internet-Box. The options he illustrates are ideally suited to the Gigaset SL360HS fixed-line telephone. However, they can also be used with other HD phones, including the Gigaset CL660HX, Gigaset CL560HX, Nyon and Yealink T46G HD


Option A: Phone memory

"The Gigaset SL360HS phone always supports a ‘local telephone directory’ containing 500 contacts in addition to a ‘main telephone directory’ (all other HD phones have a lower memory capacity, see link). Each contact in this local telephone directory always contains up to 3 telephone numbers (private / office / mobile). You can synchronise the local contacts on an individual Gigaset SL360HS. You can then update additional Gigaset telephones using a copy function. In the end, the same contacts are stored on all the telephones, just as they are when using the Internet-Box’s central storage function. The Gigaset telephone’s call log (incoming and outgoing calls) is displayed by the Internet-Box.”


Option B: "GO base station Gigaset GO Box 100"

“An attractive alternative, again featuring 500 contacts: instead of using the Internet Box’s integrated DECT base station, you can connect a ‘GO base station’ to the Internet Box via Ethernet. The GO base station must be registered via local SIP credentials. Click here for help with this.

Differences compared to option A: up to 6 mobile phones can be connected to the ‘GO base station GO Box 100’. However, the phones communicate via a separate system, and there is therefore no access to the Internet Box's main telephone directory. For the same reason, option B uses the phones’ ‘local telephone directories’. Apps are also available to synchronise ‘local telephone directories’. With this option, the ‘Go base station’ updates the call logs.

The ‘GO base station Gigaset GO Box 100’ is not sold separately and has to be bought in combination with the Gigaset SL450A GO or the Gigaset S850A GO.”


Option C: Gigaset DX800A

“With a Gigaset DX800A, the base station’s telephone directory can store up to 1,000 contacts. From there, you must then copy a selection of the contacts to the Gigaset mobile’s ‘local telephone directory’. The number of usable contacts is therefore limited by the local telephone directory. In practice, the number of contacts for the Gigaset SL360HS is still 500, but the different contacts can be assigned to each mobile phone. Please note: The Gigaset DX800A must be registered via local SIP credentials. Click here for help with this.


Option 😧 FritzBox

“The FritzBox also offers a main telephone directory with up to 1,000 contacts. In contrast to option C, this main telephone directory can also be used with current Gigaset telephones without copying the numbers to the local telephone directory. However, AVM’s website explains that a full telephone directory is slower to respond to search queries.

The latest Fritz OS supports several Gigaset telephones, and DECT telephones with CAT-iq 2.0 have been supported since Fritz OS 6.8X. Many reports in the Swisscom Community claim that Fritz!Boxes can now be used behind or even as a replacement for the Internet-Box.”



This is a user-generated article. Please note that the content of this article does not necessarily represent the views of Swisscom. 

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