3CX SIP Trunk Providers – USA

These USA 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 the USA customers who choose to use the combination of 3CX with a preferred SIP Trunk.

Preferred


 

Callcentric USA VoIP Provider Provider Callcentric DTMF Support (RFC2833) Yes
Support Cooperation No IPV6 Ready No
Provider Type Register Based Online Sign-Up Possible? Yes
Fax Support T38 Bypass Online Trunk-Management Portal? Yes
SI Mode Yes – Automata Link to Support Document N/A
Clip No Screening Support No 302 Diversion Support
Anonymous Calling No Included in Auto-Testing No
didlogic VoIP Provider Provider DID Logic DTMF Support (RFC2833) Yes
Support Cooperation Yes IPV6 Ready No
Provider Type Register Based Online Sign-Up Possible? Yes
Fax Support T38 Bypass Online Trunk-Management Portal? Yes
SI Mode Yes – Automata Link to Support Document N/A
Clip No Screening Support No 302 Diversion Support No
Anonymous Calling Yes Included in Auto-Testing No
Flowroute USA VoIP Provider Provider Flowroute DTMF Support (RFC2833) Yes
Support Cooperation Yes IPV6 Ready No
Provider Type Register Based Online Sign-Up Possible? Yes
Fax Support Not working Online Trunk-Management Portal? Yes
SI Mode Yes – Static (Multi Account Support) Link to Support Document View
Clip No Screening Support Yes 302 Diversion Support Yes
Anonymous Calling Yes Included in Auto-Testing No
Nexmo USA SIP Trunk Provider Provider Nexmo DTMF Support (RFC2833) Yes
Support Cooperation Yes IPV6 Ready No
Provider Type Register Based Online Sign-Up Possible? Yes
Fax Support Audio Online Trunk-Management Portal? Yes
SI Mode Yes – Static (Single Account Support) Link to Support Document View
Clip No Screening Support Yes (separate service) 302 Diversion Support No
Anonymous Calling Yes Included in Auto-Testing No
NTS Direct VoIP Provider US Provider NTS Direct DTMF Support (RFC2833) Yes
Support Cooperation Yes IPV6 Ready No
Provider Type Register Based Online Sign-Up Possible? Yes
Fax Support T38 Bypass Online Trunk-Management Portal? Yes
SI Mode Yes – Automata Link to Support Document N/A
Clip No Screening Support Yes 302 Diversion Support No
Anonymous Calling Yes Included in Auto-Testing No
TechSitters USA VoIP Provider Provider TechSitters DTMF Support (RFC2833) Yes
Support Cooperation Yes IPV6 Ready No
Provider Type Register Based Online Sign-Up Possible? No
Fax Support Audio Online Trunk-Management Portal? No
SI Mode Yes – Static (Single Account Support) Link to Support Document N/A
Clip No Screening Support Yes 302 Diversion Support No
Anonymous Calling Yes Included in Auto-Testing No
Voxtelesys US SIP Trunk Provider Voxtelesys DTMF Support (RFC2833) Yes
Support Cooperation Yes IPV6 Ready No
Provider Type Registered Based Online Sign-Up Possible? No
Fax Support Not Working Online Trunk-Management Portal? Yes
SI Mode Yes – Automata Link to Support Document View
Clip No Screening Support No 302 Diversion Support Yes
Anonymous Calling No Included in Auto-Testing Yes

Supported


 

Bandwidth USA VoIP Provider Provider Bandwidth DTMF Support (RFC2833) Yes
Support Cooperation No IPV6 Ready No
Provider Type IP Based (Static Public IP Required) Online Sign-Up Possible? Yes
Fax Support T38 Bypass Online Trunk-Management Portal? Yes
SI Mode Yes – Static (Single Account Support) Link to Support Document N/A
Clip No Screening Support Yes 302 Diversion Support No
Anonymous Calling Yes Included in Auto-Testing No
Broadvoice USA VoIP Provider Provider Broadvoice DTMF Support (RFC2833) Yes
Support Cooperation Yes IPV6 Ready No
Provider Type IP Based (Static Public IP Required) Online Sign-Up Possible? No
Fax Support T38 Bypass Online Trunk-Management Portal? Yes
SI Mode Yes – Static (Single Account Support) Link to Support Document N/A
Clip No Screening Support No 302 Diversion Support
Anonymous Calling Yes Included in Auto-Testing No
CenturyLink US VoIP Provider Provider CenturyLink DTMF Support (RFC2833) Yes
Support Cooperation Yes IPV6 Ready Yes
Provider Type Register Based Online Sign-Up Possible? Yes
Fax Support T38 Upscale Online Trunk-Management Portal? No
SI Mode Yes – Automata Link to Support Document View
Clip No Screening Support Yes 302 Diversion Support
Anonymous Calling Yes  Included in Auto-Testing No
Fusion US VoIP Provider Provider Fusion DTMF Support (RFC2833) Yes
Support Cooperation Yes IPV6 Ready No
Provider Type Register Based Online Sign-Up Possible? Yes
Fax Support T38 Bypass Online Trunk-Management Portal? Yes
SI Mode Yes – Automata Link to Support Document N/A
Clip No Screening Support No 302 Diversion Support No
Anonymous Calling Yes  Included in Auto-Testing No
Ironton US VoIP Provider Provider Ironton Global DTMF Support (RFC2833) Yes
Support Cooperation Yes IPV6 Ready No
Provider Type Register Based Online Sign-Up Possible? No
Fax Support Not Working Online Trunk-Management Portal? No
SI Mode Yes – Automata Link to Support Document N/A
Clip No Screening Support Yes 302 Diversion Support No
Anonymous Calling Yes  Included in Auto-Testing No
SIPTRUNK.com USA VoIP Provider Provider SIPTRUNK.com DTMF Support (RFC2833) Yes
Support Cooperation Yes IPV6 Ready No
Provider Type Register Based Online Sign-Up Possible? No
Fax Support Not Working Online Trunk-Management Portal? Yes
SI Mode Yes – Automata Link to Support Document View
Clip No Screening Support Yes 302 Diversion Support No
Anonymous Calling Yes Included in Auto-Testing No
SIP.US USA VoIP Provider Provider SIP.US DTMF Support (RFC2833) Yes
Support Cooperation Yes IPV6 Ready No
Provider Type Register Based Online Sign-Up Possible? Yes
Fax Support Not Working Online Trunk-Management Portal? Yes
SI Mode Yes – Automata Link to Support Document View
Clip No Screening Support Yes 302 Diversion Support No
Anonymous Calling Yes  Included in Auto-Testing No
Telnyx VoIP Provider Provider Telnyx DTMF Support (RFC2833) Yes
Support Cooperation Yes IPV6 Ready No
Provider Type Register Based Online Sign-Up Possible? Yes
Fax Support T38 Bypass Online Trunk-Management Portal? Yes
SI Mode Yes – Automata Link to Support Document N/A
Clip No Screening Support Yes 302 Diversion Support
Anonymous Calling Yes  Included in Auto-Testing No
Vitelity US VoIP Provider Provider Vitelity DTMF Support (RFC2833) Yes
Support Cooperation Yes IPV6 Ready No
Provider Type IP Based (Static Public IP Required) Online Sign-Up Possible? No
Fax Support Not Working Online Trunk-Management Portal? Yes
SI Mode DID Inbound Only Link to Support Document View
Clip No Screening Support Yes 302 Diversion Support
Anonymous Calling Yes  Included in Auto-Testing No
USA SIP Trunk Provider Wiretrap Telecom has passed the 3CX interop test Provider Wiretap Telecom DTMF Support (RFC2833) Yes
Support Cooperation Yes IPV6 Ready No
Provider Type IP Based (Static Public IP Required) Online Sign-Up Possible? No
Fax Support T38 Bypass Online Trunk-Management Portal? Yes
SI Mode Yes – Static (Single Account Support) Link to Support Document View
Clip No Screening Support Yes 302 Diversion Support Yes
Anonymous Calling Yes  Included in Auto-Testing No