AlloyVoice – SIP Trunk

AlloyVoice Australian SIP trunk

VoIP.MS – SIP Trunk

VoIP.MS Canadian SIP trunk

3CX Phone System Parameters Table

Find all custom parameters of 3CX

K2 Systems – Canadian SIP Trunk

K2 Systems - Canadian SIP Trunk Provider

Orbtalk – UK SIP Trunk

UK SIP Trunk Provider - Orbtalk

Australian SIP Trunk Telstra – SIP Connect (Enterprise Trunk)

Telstra - Australian SIP Trunk Provider

New Zealand SIP Trunk Provider – 2Talk

New Zealand SIP Trunk Provider - 2talk

Lightwire Business – New Zealand SIP Trunk

New Zealand SIP Trunk Provider - Lightwire

Vodafone Deutschland – SIP Trunk

Vodafone Deutschland - SIP Trunk has passed the interop with 3CX

Wiretap Telecom

USA SIP Trunk Provider Wiretap Telecom has passed the 3CX interop test