RingCentral | Synthflow

Synthflow integrates with two different RingCentral products: RingEX and RingCX. They are not interchangeable. Each uses a different SIP integration model, so pick the guide that matches your RingCentral license.

Integrations available

RingEX

RingCX

Run Synthflow as an Intelligent Virtual Agent (IVA) in RingCX voice queues.

Comparison

The two products use fundamentally different integration models. Use the comparison below to choose.

	RingEX	RingCX
What it is	RingCentral’s cloud business phone system (RingEX / MVP)	RingCentral’s contact centre platform
Integration model	Synthflow registers to RingCentral as a SIP IP phone (extension)	RingCX routes voice queue calls into Synthflow as an Intelligent Virtual Agent (IVA)
Synthflow number setup	Add the number on the Phone Numbers page using RingCentral SIP credentials; Termination URI is your RingCentral SIP domain	Import the workflow channel number as a Custom phone number; Origination URI is auto-populated (`sip:sip.synthflow.ai:32681`)
RingCentral-side setup	Provision a generic SIP IP phone in the Service Portal	Create an IVA integration and build a workflow in Workflow Studio
Call transfers	Warm and cold transfers (SIP or PSTN) work normally	Direct transfers are not supported (return the call with the RingCX Handoff action)
Other limits	No outbound calling; max 5 concurrent calls per extension	Caller context is passed via a JavaScript node; calls return to the RingCX workflow

Once you’ve picked the right product, follow its dedicated guide: RingEX or RingCX.

FAQ

What's the difference between RingEX and RingCX?

RingEX is RingCentral’s cloud business phone system; Synthflow connects by registering as a SIP extension. RingCX is RingCentral’s contact centre platform; Synthflow connects as an Intelligent Virtual Agent (IVA) that RingCX routes voice queue calls into. They use different setups, so follow the guide for the product you have.

Do both require the Enterprise plan?

Yes. SIP trunking and both RingCentral integrations are available on the Synthflow Enterprise plan.

Can Synthflow make outbound calls on RingCentral?

No for RingEX. SIP extensions registered through Synthflow cannot initiate outbound calls. For RingCX, Synthflow handles inbound voice queue calls routed from the RingCX workflow.