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3CX SIP Trunk Providers – Germany

These German SIP Trunk Providers have been tested and certified by 3CX. With no manual configuration required you can just plug and play your PBX with a SIP Trunk of your choice. Preferred SIP Trunk providers are tested against each build of 3CX. Both parties are committed to providing end-to-end support to German customers who choose to use the combination of 3CX with a preferred SIP Trunk.

Preferred Providers

HFO Telecom German VoIP Provider
Provider HFO Telecom
Support Cooperation Yes
Provider Type Register Based
Fax Support T38 Bypass
SI Mode Yes – Automata
Clip No Screening Support Yes
Anonymous Calling Yes
DTMF Support (RFC2833) Yes
IPV6 Ready No
Online Sign-Up Possible? No
Online Trunk-Management Portal? Yes
Link to Support Document N/A
302 Diversion Support No
Included in Auto-Testing No
QSC German VoIP Provider
Provider QSC (IPfonie connectedR)
Support Cooperation Yes
Provider Type Register Based
Fax Support T38 Upscale
SI Mode Yes – Automata
Clip No Screening Support Yes
Anonymous Calling Yes
DTMF Support (RFC2833) Yes
IPV6 Ready Yes
Online Sign-Up Possible? No
Online Trunk-Management Portal? Yes
Link to Support Document N/A
302 Diversion Support No
Included in Auto-Testing  No
QSC German VoIP Provider
Provider QSC (IPfonie extended)
Support Cooperation Yes
Provider Type Register Based
Fax Support T38 Upscale
SI Mode Yes – Automata
Clip No Screening Support Yes
Anonymous Calling Yes
DTMF Support (RFC2833) Yes
IPV6 Ready Yes
Online Sign-Up Possible? No
Online Trunk-Management Portal? No
Link to Support Document N/A
302 Diversion Support No
Included in Auto-Testing  No

Supported Providers

German SIP Trunk 1&1 Versatel is now supported by 3CX V15.5
Provider 1&1 Versatel
Support Cooperation No
Provider Type Register Based
Fax Support Not Working
SI Mode Yes – Automata
Clip No Screening Support Yes
Anonymous Calling Yes
DTMF Support (RFC2833) Yes
IPV6 Ready No
Online Sign-Up Possible? No
Online Trunk-Management Portal? No
Link to Support Document View
302 Diversion Support Yes
Included in Auto-Testing  No
Deutsche Telefon German VoIP Provider
Provider Deutsche Telefon Standard
Support Cooperation Yes
Provider Type Register Based
Fax Support T38 Bypass
SI Mode Yes – Automata
Clip No Screening Support Yes
Anonymous Calling Yes
DTMF Support (RFC2833) Yes
IPV6 Ready Yes
Online Sign-Up Possible? No
Online Trunk-Management Portal? No
Link to Support Document View
302 Diversion Support Yes
Included in Auto-Testing  No
DeutscheTelekom German VoIP Provider
Provider DeutscheTelekom (All IP)
Support Cooperation No
Provider Type Register Based
Fax Support Audio
SI Mode
Clip No Screening Support No
Anonymous Calling No
DTMF Support (RFC2833) No
IPV6 Ready No
Online Sign-Up Possible? No
Online Trunk-Management Portal? Yes
Link to Support Document View
302 Diversion Support No
Included in Auto-Testing  No
DeutscheTelekom German VoIP Provider
Provider Deutsche Telekom NGN (SIP Trunk)
Support Cooperation No
Provider Type Register Based
Fax Support Not Working
SI Mode Yes – Automata
Clip No Screening Support Yes (Separate service)
Anonymous Calling Yes
DTMF Support (RFC2833) Yes
IPV6 Ready No
Online Sign-Up Possible? Yes
Online Trunk-Management Portal? Yes
Link to Support Document View
302 Diversion Support No
Included in Auto-Testing  No
Dusnet SIP Trunk - Germany
Provider dus.net
Support Cooperation Yes
Provider Type Register Based
Fax Support T38 Bypass
SI Mode Yes – Automata
Clip No Screening Support Yes
Anonymous Calling Yes
DTMF Support (RFC2833) Yes
IPV6 Ready No
Online Sign-Up Possible? Yes
Online Trunk-Management Portal? No
Link to Support Document View
302 Diversion Support No
Included in Auto-Testing Yes
Easybell German VoIP Provider
Provider easybell
Support Cooperation Yes
Provider Type Register Based
Fax Support T38 Bypass
SI Mode Yes – Automata
Clip No Screening Support Yes
Anonymous Calling Yes
DTMF Support (RFC2833) Yes
IPV6 Ready Yes
Online Sign-Up Possible? Yes
Online Trunk-Management Portal? Yes
Link to Support Document View
302 Diversion Support No
Included in Auto-Testing  No
German SIP Trunk Provider Ecotel
Provider Ecotel
Support Cooperation Yes
Provider Type Register Based
Fax Support T38 Bypass
SI Mode Yes – Automata
Clip No Screening Support Yes
Anonymous Calling Yes
DTMF Support (RFC2833) Yes
IPV6 Ready No
Online Sign-Up Possible? No
Online Trunk-Management Portal? No
Link to Support Document View
302 Diversion Support No
Included in Auto-Testing  Yes
Provider Inexio
Support Cooperation Yes
Provider Type Register Based
Fax Support T38 Bypass
SI Mode Yes – Automata
Clip No Screening Support Yes
Anonymous Calling Yes
DTMF Support (RFC2833) Yes
IPV6 Ready No
Online Sign-Up Possible? No
Online Trunk-Management Portal? No
Link to Support Document View
302 Diversion Support Yes
Included in Auto-Testing  Yes
M-net German VoIP Provider
Provider M-net
Support Cooperation Yes
Provider Type Register Based
Fax Support Not Working
SI Mode Yes – Automata
Clip No Screening Support Yes (Separate Service)
Anonymous Calling No
DTMF Support (RFC2833) Yes
IPV6 Ready No
Online Sign-Up Possible? Yes
Online Trunk-Management Portal? No
Link to Support Document N/A
302 Diversion Support
Included in Auto-Testing  No
sipbase-reventix German STIP Trunk Provider
Provider SIPbase-reventix
Support Cooperation Yes
Provider Type Register Based
Fax Support T38 Bypass
SI Mode Yes – Automata
Clip No Screening Support Yes (separate service)
Anonymous Calling Yes
DTMF Support (RFC2833) Yes
IPV6 Ready No
Online Sign-Up Possible? No
Online Trunk-Management Portal? Yes
Link to Support Document View
302 Diversion Support Yes
Included in Auto-Testing  Yes
Sipgate German VoIP Provider
Provider Sipgate
Support Cooperation Yes
Provider Type Register Based
Fax Support Audio
SI Mode Yes – Automata
Clip No Screening Support Yes
Anonymous Calling Yes
DTMF Support (RFC2833) Yes
IPV6 Ready Yes
Online Sign-Up Possible? Yes
Online Trunk-Management Portal? Yes
Link to Support Document N/A
302 Diversion Support No
Included in Auto-Testing  No
Provider Vodafone DE (excl. Kabel Dtl.)
Support Cooperation Yes
Provider Type Register Based
Fax Support T38 Bypass
SI Mode Yes – Automata
Clip No Screening Support Yes
Anonymous Calling Yes
DTMF Support (RFC2833) Yes
IPV6 Ready No
Online Sign-Up Possible? No
Online Trunk-Management Portal? No
Link to Support Document View
302 Diversion Support No
Included in Auto-Testing  No

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