Application Communications › Voice & Telephony

Voice & Telephony

AE-150.50 Level 2 API Evangelist extension API Evangelist extension, CC BY-NC-SA 46 providers 162 API surfaces 30 rated strong or better

Programmable calls and numbers.

Voice & Telephony (AE-150.50) is a level-2 business capability under Application Communications in the API Evangelist extension model. The catalog holds 162 API surface(s) from 46 provider(s) that can perform some part of it, 30 of them rated strong or better. Reach is the vendor surface that lands on this capability — it is not a claim about what any particular organisation has deployed.

Where this capability definition comes from. This capability is part of the API Evangelist extension to the business-capability model, written by API Evangelist and licensed CC BY-NC-SA 4.0. API Evangelist capability extension — https://apievangelist.com Audience: b2b It extends, and never modifies, Turbo EA Capabilities by Vincent Verdet (CC BY 4.0). · Extension provenance and licence

Sub-capabilities

Programmable Voice AE-150.50.10API Evangelist extension, CC BY-NC-SA

b2b

Placing and receiving calls via API.

no catalog coverage

Number Verification AE-150.50.20API Evangelist extension, CC BY-NC-SA

b2b

Confirming a phone number belongs to the user.

no catalog coverage

Virtual Receptionists & Answering Services AE-150.50.30API Evangelist extension, CC BY-NC-SA

b2b

Live or AI receptionists that answer a business's calls and web chats and capture new-client intake (Smith.ai, Ruby, Answering Legal, Intaker, AnswerConnect).

no catalog coverage

Providers that reach this capability

Ordered by rating band. Reach means a provider publishes an API surface that can perform some part of this capability — it is not a claim that any particular organisation has deployed it.

Exemplar 12 Complete, well-documented, and agent-ready
TelnyxAdvanced Number OrdersCredential ConnectionsDisplay Identity RecordsExternal Connections15 APIs87.6TwilioByocTrunksCallsNumbersV3HostedNumbersHostedNumberOrderSettings6 APIs86.0Amazon Pinpointamazon-pinpoint-voice-api1 API80.4LeadpingCallsPhone Numbers2 APIs77.6SignalWireImported Phone NumbersNumber GroupsQueue MembersQueues12 APIs75.08x8Phone NumbersRingGroupsVirtual Number Management API3 APIs72.2SinchApplicationsPhone NumbersSIP EndpointsSIP Trunks4 APIs69.8KPNVoIP SIP API1 API68.8VonageCallsDTMFNumberPlay TTS7 APIs68.2SynthflowPhone Numbers1 API67.6Zoom PhoneAuto ReceptionistsCall HandlingCall LogsCall Queues20 APIs67.5Microsoft AzureSIP Configuration1 API66.7
Strong 18 Solid coverage with minor gaps
CloudTalkNumbers1 API66.2Syllablechannels.twiliochannels.twilio.numbers2 APIs66.2Phone ComExtensionsQueuesRoutes3 APIs65.9AvayaAvailable Phone NumbersAvaya Cloud Office SIP TrunksAvaya Cloud Office management3 APIs65.4SLNGCalls1 API64.0The Mobile First CompanyCalls1 API62.3DialNexaBatch CallsCallsPhone Numbers3 APIs61.6CM.comSip AccountsSip ConfigSip Endpoints3 APIs61.4UnifonicCall Management and StatusCall Queue Management2 APIs61.1RingoverCallbacksCallsChannelsConferences6 APIs60.6HighLevelPhone Numbers1 API60.5RingCentralBusiness AnalyticsCall ControlCall Handling RulesCall Monitoring Groups7 APIs59.8SonetelAccountCall RecordingCountryMake Calls5 APIs59.8HappyrobotPhone NumbersSIP Trunks2 APIs58.2SaperlyConnectionsNumbersVoice3 APIs56.4NfonCustomer ExtensionsCustomer SkillsCustomer TargetsCustomer Time Controls7 APIs55.3TeliaxCustomer/NumbersCustomer/PortingCustomer/TrunksToll-Free5 APIs55.2ReplicantReplicant1 API54.8
Developing 13 Usable, with meaningful gaps to close
SimpleVoIPCall RecordingsMusic on Hold2 APIs54.0QuoCalls1 API51.0VeritusCalls1 API48.8Bharti AirtelAirtel IQ Sample CDR(Call Data Record) API1 API48.7FreJun TelerVoice / Call ControlsVoice / CallsVoice / Calls (legacy)Voice / Operations4 APIs47.9Sarj AI Developer APIPhone NumbersSIP TrunkSchedule Configs3 APIs47.7AgentPhoneNumbers1 API47.3iCallAgent Public APICampaigns1 API47.0OutRivalCall1 API46.4DailyPhone Numbers1 API45.9Magic MomentConference1 API42.6BirdCall FlowsCallsNumbersRecordings4 APIs42.4Retell AICreate Batch CallCreate Phone CallCreate Phone NumberCreate Web Call8 APIs39.4
Thin 3 Limited public surface area
Fish AudioPhone CallsPhone Numbers2 APIs34.9JustCallPhone Numbers1 API34.6Bland AICalls1 API33.0
This page carries no rating. Capabilities are not rated. A capability is a description of what a business does, not a thing a company publishes, so a Kin Score would have nothing to measure.
The edge table is a Pro feature. This page shows which providers and tags reach Voice & Telephony. The underlying tag → capability edges — each with the quoted fragment of the provider's own OpenAPI that evidences it, a calibrated confidence score, and the contract-provenance gate it passed — are available through the API, along with company-level capability maps. Only edges at confidence ≥ 0.7 with evidence found verbatim in the source contract are published at all.

See plans →  ·  How the edges are graded →