Hosted multicast calls with 3CX

• Ben Grabau
• 2025-11-06
• Voice

Multicast RTP is a great way to page multiple phones at once. 3CX supports multicast groups for on-premises installations, but when you’re cloud hosted and using a 3CX session border controller (SBC), SIP multicast is not available. So it would seem the only option is unicast ring groups, right? Unfortunately, 3CX’s license model is based…

ElevenLabs + 3CX: Passing through Caller ID

• Ben Grabau
• 2025-08-30
• Voice

Since my last post about linking ElevenLabs and 3CX, there’s another setting that will make the integration experience better. Passing through caller ID By default, an outbound call via a SIP trunk in 3CX will pass through the outbound caller ID as defined in the trunk, extension or department. This doesn’t work for forwarding calls…