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About sipcall

Backbone Solutions AG was founded in 1998 and offers professional and high-quality solutions for connectivity and Internet telephony (VoIP).
In 2005, Backbone Solutions AG was one of the first providers in Switzerland to launch the voice-over-IP service sipcall, which subsequently developed into one of the leading providers of innovative Internet telephony services.
sipcall offers comprehensive VoIP telecommunication solutions for professional use for small to large companies and private individuals in Switzerland and Austria.
In close cooperation with leading telematics companies, sipcall realizes successful telecommunication services such as sipcall virtual pbx, the flexible telephone system in the sipcall cloud for SMEs and much more.
To date, over 40,000 customers have opted for a sipcall telephony solution.

Interop IP devices sipcall 2

See below for a list with supported features when using the Gigaset PRO IP Devices on the providers network.

Feature                                          DE310 / DE410 IP PRO    DE700 / DE900 IP PRO        N510 IP PRO          N720 IP PRO    DX800AMaxwell 3,Basic,
Maxwell 10

Software Version MR55-6
Porta One 11 July 2018 tested with :

Software release:  02.00.0402.00.0742.24570.1111752.22.7

Basic CallYesYesYesYesYesYes

Calling line (CLIP)YesYesYesYesYesYes

Connected line (COLP)NoNoNoNoNoNo

Anonymous callYesYesYesYesYesYes

Do Not DisturbYesYesNoNoNoYes

Message waitingNoNoYesYesYesYes

Call list/historyYesYesYesYesYesYes

Voice mail deposit/retrievalNoNoYesYesYesNo

Call waitingYesYesYesYesYesYes

Call Hold / ToggleNoNoYesYesYesYes

Call forward (CFU)NoNoYesYesYesYes

Call forward (CFNR)NoNoYesYesYesYes

Call forward (CFB)NoNoYesYesYesYes

Call Transfer attendedYesYesYesYesYesYes

Call Transfer unattended (Blind)Yes*Yes*YesYesYesYes

Completion of Calls to Busy Subscriber (CCBS)--NoNoNoNo

DTMF (RFC2833)YesYesYesYesYesYes

Conference 3ptyYesYesYesNoYesYes

BLF Busy / Idle indicationNoNoNoNoNoYes

Session Audit--No-NoNo

Call pick-up direct  ( * 8 extension)NoNoNoNoYesYes

Call pick-up group ( * 8 )NoNoNoNoYesYes

Call pick-up BLFNoNoNoNoNoYes

Call completed elsewhereNoNoNoNoNoNo

Auto provisioningNoNoNoNoNoNo

UDP / TCP protocol


Central Phonebook

For unattended transfer the DE310/DE410 requires Firmware 02.00.04 or higher and DE700/DE900 requires firmware 02.00.07 or higher.

And Voip Settings -> Unattended call transfer set to Semi-attended

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