RingCentral Voice API vs Amazon Chime SDK PSTN Audio

RingCentral Voice API9.0Visit Amazon Chime SDK PSTN Audio8.8Visit

Higher score RingCentral Voice API #5 in Voice APIs 9.0/10 Paid ✓ 5 of 5 features Visit RingCentral

vs

Amazon Chime SDK PSTN Audio #7 in Voice APIs 8.8/10 Paid ✓ 5 of 5 features Visit AWS

• RingCentral Voice API fits best

  Teams building call workflows around RingCentral

• Amazon Chime SDK PSTN Audio fits best

  AWS developers adding PSTN call flows

Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.

Side by side

Feature	RingCentral Voice API 9.0/10 Visit ↗	Amazon Chime SDK PSTN Audio 8.8/10 Visit ↗
At a glance
Editor score	9.0	8.8
Ranking	#5 in Voice APIs	#7 in Voice APIs
Best for	Teams building call workflows around RingCentral	AWS developers adding PSTN call flows
Pricing model	Paid	Paid
Starting price	—	$0.002/unit usage-based
Free plan	—	—
Free trial	—	—
Deployment	Cloud	Cloud
Platforms	Web	Web
Support	Community, Tickets	Docs, Community
Built for	Small business, Mid-market, Enterprise	Mid-market, Enterprise
Features RingCentral Voice API 5/5 · Amazon Chime SDK PSTN Audio 5/5
Inbound calling	✓	✓
Outbound calling	✓	✓
Phone number support	✓	✓
SIP support	✓	✓
Call recording	✓	✓
Specs
Concurrent call limit	Not checked yet	10 calls
SDK languages	JavaScript, Python, Java, C#, PHP, Ruby	JavaScript, Swift, Objective-C, Kotlin, Java, C++
Our review
Pros	Supports inbound and outbound calling through WebRTC, SIP and REST. Offers active-call controls, recording, call logs and recorded-call data. Provides SDK guides for JavaScript, Python, Java, C#, PHP and Ruby.	Inbound and outbound calling with provisioned and toll-free numbers Lambda-controlled flows with DTMF, prompts, routing, and bridging Recording, noise suppression, and integrations across AWS services
Cons	Production access is tied to RingEX rather than a standalone API plan. The listed production price is $20 per user per month with annual billing. The development sandbox is watermarked and includes two phone extensions.	API-only coverage requires development work for end-user applications Usage-based billing spans calling, phone numbers, and connected AWS services The default regional active-call quota is 10 concurrent calls
Our verdict	RingCentral Voice API gives developers programmable voice and phone capabilities for applications that need inbound or outbound calling. It suits teams building call workflows around RingCentral, from routing incoming calls to managing… Read the review →	Amazon Chime SDK PSTN Audio is an API service for developers building serverless telephony applications on AWS. It supports inbound calls on provisioned DID/DDI and toll-free numbers, outbound calls to landline and mobile numbers in over… Read the review →

Strengths and trade-offs

• RingCentral Voice API — where it wins

  • Supports inbound and outbound calling through WebRTC, SIP and REST.
  • Offers active-call controls, recording, call logs and recorded-call data.
  • Provides SDK guides for JavaScript, Python, Java, C#, PHP and Ruby.

  Where it doesn't

  • Production access is tied to RingEX rather than a standalone API plan.
  • The listed production price is $20 per user per month with annual billing.
  • The development sandbox is watermarked and includes two phone extensions.

• Amazon Chime SDK PSTN Audio — where it wins

  • Inbound and outbound calling with provisioned and toll-free numbers
  • Lambda-controlled flows with DTMF, prompts, routing, and bridging
  • Recording, noise suppression, and integrations across AWS services

  Where it doesn't

  • API-only coverage requires development work for end-user applications
  • Usage-based billing spans calling, phone numbers, and connected AWS services
  • The default regional active-call quota is 10 concurrent calls

• RingCentral Voice API9.0/10 · Paid

  A RingEX-included voice API for building call workflows across WebRTC, SIP and REST.

  Visit RingCentralFull verdict →
• Amazon Chime SDK PSTN Audio8.8/10 · Paid

  A focused AWS building block for developers creating programmable PSTN call flows.

  Visit AWSFull verdict →