azure-communication-services

# Azure Communication Services Skill This skill provides expert guidance for Azure Communication Services. Covers troubleshooting, best practices, decision making, architecture & design patterns, limits & quotas, security, configuration, integrations & coding patterns, and deployment. It combines local quick-reference content with remote documentation fetching capabilities. ## How to Use This Skill > **IMPORTANT for Agent**: Use the **Category Index** below to locate relevant sections. For categories with line ranges (e.g., `L35-L120`), use `read_file` with the specified lines. For categories with file links (e.g., `[security.md](security.md)`), use `read_file` on the linked reference file > **IMPORTANT for Agent**: If `metadata.generated_at` is more than 3 months old, suggest the user pull the latest version from the repository. If `mcp_microsoftdocs` tools are not available, suggest the user install it: [Installation Guide](https://github.com/MicrosoftDocs/mcp/blob/main/README.md) This skill requires **network access** to fetch documentation content: - **Preferred**: Use `mcp_microsoftdocs:microsoft_docs_fetch` with query string `from=learn-agent-skill`. Returns Markdown. - **Fallback**: Use `fetch_webpage` with query string `from=learn-agent-skill&accept=text/markdown`. Returns Markdown. ## Category Index | Category | Lines | Description | |----------|-------|-------------| | Troubleshooting | L37-L108 | Diagnosing and fixing ACS issues across calling, SMS, email, PSTN/direct routing, Teams, WhatsApp, devices, audio/video quality, and collecting logs/diagnostics for detailed troubleshooting. | | Best Practices | L109-L135 | Best practices for ACS calling, SMS, email, Teams interop, auth, IDs, spam/reputation, network/VDI tuning, UX design, logging, and job routing to build reliable, production-ready apps | | Decision Making | L136-L162 | Planning and decision guides for migrating ACS chat/calling/telephony, integrating with Teams/Teams Phone, choosing PSTN/number options, and understanding pricing, licensing, and gov cloud interop. | | Architecture & Design Patterns | L163-L169 | Architectural guidance and patterns for integrating ACS with Teams via Call Automation, building contact centers, and using ExpressRoute for private, secure connectivity. | | Limits & Quotas | L170-L235 | Limits, quotas, eligibility rules, and regional restrictions for ACS calling, phone numbers, email, Teams interop, metrics, SDK support, and direct routing features. | | Security | L236-L263 | Security, auth, and compliance for ACS: identity and API auth, Teams/Rooms interop security, email/sender auth, encryption, data residency/privacy, telephony/emergency calling, and secure webhooks. | | Configuration | L264-L334 | Configuring logging, metrics, monitoring, routing, and domain/sender settings for ACS calling, chat, SMS, email, Rooms, Job Router, and Teams interoperability. | | Integrations & Coding Patterns | L335-L467 | Patterns and code samples for integrating ACS calling, chat, SMS, email, WhatsApp, Teams, Job Router, and UI libraries with other Azure/third‑party services, bots, AI, and telephony systems | | Deployment | L468-L473 | Guides for deploying ACS: infrastructure needs for Direct Routing, porting phone numbers, and automating ACS/Email resource setup with PowerShell. | ### Troubleshooting | Topic | URL | |-------|-----| | Use Job Router operational logs for diagnostics | https://learn.microsoft.com/en-us/azure/communication-services/concepts/analytics/logs/router-logs | | Troubleshoot ACS email custom domain configuration issues | https://learn.microsoft.com/en-us/azure/communication-services/concepts/email/email-domain-configuration-troubleshooting | | Troubleshoot common Teams Phone extensibility issues with ACS | https://learn.microsoft.com/en-us/azure/communication-services/concepts/interop/tpe/teams-phone-extensibility-troubleshooting | | Resolve common Azure SMS questions and issues | https://learn.microsoft.com/en-us/azure/communication-services/concepts/sms/sms-faq | | Monitor and troubleshoot ACS direct routing configuration | https://learn.microsoft.com/en-us/azure/communication-services/concepts/telephony/monitoring-troubleshooting-telephony/monitor-direct-routing | | Troubleshoot ACS direct routing outbound call failures | https://learn.microsoft.com/en-us/azure/communication-services/concepts/telephony/monitoring-troubleshooting-telephony/troubleshoot-outbound-calls | | Fix ACS direct routing TLS certificate and SIP OPTIONS issues | https://learn.microsoft.com/en-us/azure/communication-services/concepts/telephony/monitoring-troubleshooting-telephony/troubleshoot-tls-certificate-sip-options | | Troubleshoot Azure Communication Services PSTN call failures | https://learn.microsoft.com/en-us/azure/communication-services/concepts/telephony/troubleshooting-pstn-call-failures | | Collect troubleshooting information for Azure Communication Services | https://learn.microsoft.com/en-us/azure/communication-services/concepts/troubleshooting-info | | Use ACS Call Diagnostics to investigate call issues | https://learn.microsoft.com/en-us/azure/communication-services/concepts/voice-video-calling/call-diagnostics | | Diagnose Azure Communication Services call quality issues | https://learn.microsoft.com/en-us/azure/communication-services/concepts/voice-video-calling/call-diagnostics | | Known issues and limitations for ACS Call Automation | https://learn.microsoft.com/en-us/azure/communication-services/concepts/voice-video-calling/known-issues-call-automation | | Resolve known issues in ACS native calling SDKs | https://learn.microsoft.com/en-us/azure/communication-services/concepts/voice-video-calling/known-issues-native | | Review known issues for ACS WebJS calling SDK | https://learn.microsoft.com/en-us/azure/communication-services/concepts/voice-video-calling/known-issues-webjs | | Diagnose and fix ACS web VoIP call quality issues | https://learn.microsoft.com/en-us/azure/communication-services/concepts/voice-video-calling/troubleshoot-web-voip-quality | | Use User Facing Diagnostics to detect ACS call issues | https://learn.microsoft.com/en-us/azure/communication-services/concepts/voice-video-calling/user-facing-diagnostics | | Troubleshoot Azure Communication Services UI Library calls | https://learn.microsoft.com/en-us/azure/communication-services/how-tos/ui-library-sdk/troubleshooting | | Troubleshoot Azure-linked WhatsApp Business accounts | https://learn.microsoft.com/en-us/azure/communication-services/quickstarts/advanced-messaging/whatsapp/whatsapp-business-account-faq | | Troubleshoot audio delay in ACS voice calls | https://learn.microsoft.com/en-us/azure/communication-services/resources/troubleshooting/voice-video-calling/audio-issues/delay-issue | | Mitigate echo issues in ACS audio calls | https://learn.microsoft.com/en-us/azure/communication-services/resources/troubleshooting/voice-video-calling/audio-issues/echo-issue | | Fix low incoming audio volume in ACS calls | https://learn.microsoft.com/en-us/azure/communication-services/resources/troubleshooting/voice-video-calling/audio-issues/incoming-audio-low-volume | | Diagnose ACS one-way audio from microphone issues | https://learn.microsoft.com/en-us/azure/communication-services/resources/troubleshooting/voice-video-calling/audio-issues/microphone-issue | | Fix one-way audio when microphone permission is denied | https://learn.microsoft.com/en-us/azure/communication-services/resources/troubleshooting/voice-video-calling/audio-issues/microphone-permission | | Resolve ACS one-way audio from network issues | https://learn.microsoft.com/en-us/azure/communication-services/resources/troubleshooting/voice-video-calling/audio-issues/network-issue | | Diagnose poor audio quality in ACS calls | https://learn.microsoft.com/en-us/azure/communication-services/resources/troubleshooting/voice-video-calling/audio-issues/poor-quality | | Fix ACS one-way audio from speaker problems | https://learn.microsoft.com/en-us/azure/communication-services/resources/troubleshooting/voice-video-calling/audio-issues/speaker-issue | | Fix ACS calls ending with 410/3112 network errors | https://learn.microsoft.com/en-us/azure/communication-services/resources/troubleshooting/voice-video-calling/call-setup-issues/call-ends-with-410-3112 | | Troubleshoot slow call setup in ACS Calling SDK | https://learn.microsoft.com/en-us/azure/communication-services/resources/troubleshooting/voice-video-calling/call-setup-issues/call-setup-takes-too-long | | Resolve 'failed to create CallAgent' in ACS | https://learn.microsoft.com/en-us/azure/communication-services/resources/troubleshooting/voice-video-calling/call-setup-issues/failed-to-create-call-agent | | Fix invalid or expired tokens in ACS call setup | https://learn.microsoft.com/en-us/azure/communication-services/resources/troubleshooting/voice-video-calling/call-setup-issues/invalid-or-expired-tokens | | Fix missing incoming call notifications in ACS | https://learn.microsoft.com/en-us/azure/communication-services/resources/troubleshooting/voice-video-calling/call-setup-issues/no-incoming-call-notifications | | Troubleshoot slow askDevicePermission API in ACS | https://learn.microsoft.com/en-us/azure/communication-services/resources/troubleshooting/voice-video-calling/device-issues/ask-device-permission-api-takes-too-long | | Fix missing detailed microphone list in ACS | https://learn.microsoft.com/en-us/azure/communication-services/resources/troubleshooting/voice-video-calling/device-issues/no-enumerated-microphone-list | | Fix missing detailed speaker list in ACS | https://learn.microsoft.com/en-us/azure/communication-services/resources/troubleshooting/voice-video-calling/device-issues/no-enumerated-speaker-list | | Resolve missing permission prompts in ACS device access | https://learn.microsoft.com/en-us/azure/communication-services/resources/troubleshooting/voice-video-calling/device-issues/no-permission-prompt | | Interpret ACS Calling SDK error messages and codes | https://learn.microsoft.com/en-us/azure/communication-services/resources/troubleshooting/voice-video-calling/general-troubleshooting-strategies/understanding-error-codes | | Collect verbose browser logs for ACS troubleshooting | https://learn.microsoft.com/en-us/azure/communication-services/resources/troubleshooting/voice-video-calling/references/how-to-collect-browser-verbose-log | | Collect ACS call information for issue diagnosis | https://learn.microsoft.com/en-us/azure/communication-services/resources/troubleshooting/voice-video-calling/references/how-to-collect-call-info | | Collect ACS client logs using @azure/logger | https://learn.microsoft.com/en-us/azure/communication-services/resources/troubleshooting/voice-video-calling/references/how-to-collect-client-logs | | Capture diagnostic audio recordings for ACS calls | https://learn.microsoft.com/en-us/azure/communication-services/resources/troubleshooting/voice-video-calling/references/how-to-collect-diagnostic-audio-recordings | | Export Windows audio event logs for ACS issues | https://learn.microsoft.com/en-us/azure/communication-services/resources/troubleshooting/voice-video-calling/references/how-to-collect-windows-audio-event-log | | Diagnose ACS cameraFreeze user-facing diagnostic events | https://learn.microsoft.com/en-us/azure/communication-services/resources/troubleshooting/voice-video-calling/references/ufd/camera-freeze | | Interpret ACS cameraPermissionDenied diagnostic events | https://learn.microsoft.com/en-us/azure/communication-services/resources/troubleshooting/voice-video-calling/references/ufd/camera-permission-denied | | Handle ACS cameraStartFailed diagnostic events | https://learn.microsoft.com/en-us/azure/communication-services/resources/troubleshooting/voice-video-calling/references/ufd/camera-start-failed | | Handle ACS cameraStartTimedOut diagnostic events | https://learn.microsoft.com/en-us/azure/communication-services/resources/troubleshooting/voice-video-calling/references/ufd/camera-start-timed-out | | Handle ACS cameraStoppedUnexpectedly diagnostic events | https://learn.microsoft.com/en-us/azure/communication-services/resources/troubleshooting/voice-video-calling/references/ufd/camera-stopped-unexpectedly | | Handle ACS capturerStartFailed screen sharing events | https://learn.microsoft.com/en-us/azure/communication-services/resources/troubleshooting/voice-video-calling/references/ufd/capturer-start-failed | | Handle ACS capturerStoppedUnexpectedly screen sharing events | https://learn.microsoft.com/en-us/azure/communication-services/resources/troubleshooting/voice-video-calling/references/ufd/capturer-stopped-unexpectedly | | Handle ACS microphoneMuteUnexpectedly diagnostic events | https://learn.microsoft.com/en-us/azure/communication-services/resources/troubleshooting/voice-video-calling/references/ufd/microphone-mute-unexpectedly | | Diagnose ACS microphoneNotFunctioning diagnostic events | https://learn.microsoft.com/en-us/azure/communication-services/resources/troubleshooting/voice-video-calling/references/ufd/microphone-not-functioning | | Interpret ACS microphonePermissionDenied diagnostic events | https://learn.microsoft.com/en-us/azure/communication-services/resources/troubleshooting/voice-video-calling/references/ufd/microphone-permission-denied | | Interpret ACS networkReceiveQuality diagnostic events | https://learn.microsoft.com/en-us/azure/communication-services/resources/troubleshooting/voice-video-calling/references/ufd/network-receive-quality | | Diagnose ACS networkReconnect ICE failure events | https://learn.microsoft.com/en-us/azure/communication-services/resources/troubleshooting/voice-video-calling/references/ufd/network-reconnect | | Handle ACS networkRelaysNotReachable diagnostic events | https://learn.microsoft.com/en-us/azure/communication-services/resources/troubleshooting/voice-video-calling/references/ufd/network-relays-not-reachable | | Interpret ACS networkSendQuality diagnostic events | https://learn.microsoft.com/en-us/azure/communication-services/resources/troubleshooting/voice-video-calling/references/ufd/network-send-quality | | Resolve ACS noMicrophoneDevicesEnumerated diagnostic events | https://learn.microsoft.com/en-us/azure/communication-services/resources/troubleshooting/voice-video-calling/references/ufd/no-microphone-devices-enumerated | | Interpret ACS noNetwork user-facing diagnostic events | https://learn.microsoft.com/en-us/azure/communication-services/resources/troubleshooting/voice-video-calling/references/ufd/no-network | | Resolve ACS noSpeakerDevicesEnumerated diagnostic events | https://learn.microsoft.com/en-us/azure/communication-services/resources/troubleshooting/voice-video-calling/references/ufd/no-speaker-devices-enumerated | | Resolve ACS screenshareRecordingDisabled diagnostic events | https://learn.microsoft.com/en-us/azure/communication-services/resources/troubleshooting/voice-video-calling/references/ufd/screenshare-recording-disabled | | Handle ACS speakingWhileMicrophoneIsMuted diagnostic events | https://learn.microsoft.com/en-us/azure/communication-services/resources/troubleshooting/voice-video-calling/references/ufd/speaking-while-microphone-is-muted | | Troubleshoot call end response codes across ACS SDKs | https://learn.microsoft.com/en-us/azure/communication-services/resources/troubleshooting/voice-video-calling/troubleshooting-codes | | Resolve ACS errors when disposing video renderer during subscription | https://learn.microsoft.com/en-us/azure/communication-services/resources/troubleshooting/voice-video-calling/video-issues/application-disposes-video-renderer | | Troubleshoot ACS createView timeout discrepancies | https://learn.microsoft.com/en-us/azure/communication-services/resources/troubleshooting/voice-video-calling/video-issues/create-view-timeout | | Improve ACS video quality on poor networks | https://learn.microsoft.com/en-us/azure/communication-services/resources/troubleshooting/voice-video-calling/video-issues/network-poor | | Handle ACS remote video becoming unavailable mid-subscription | https://learn.microsoft.com/en-us/azure/communication-services/resources/troubleshooting/voice-video-calling/video-issues/remote-video-becomes-unavailable | | Handle ACS error subscribing to unavailable video | https://learn.microsoft.com/en-us/azure/communication-services/resources/troubleshooting/voice-video-calling/video-issues/subscribing-video-not-available | | Fix frozen sender video in ACS calls | https://learn.microsoft.com/en-us/azure/communication-services/resources/troubleshooting/voice-video-calling/video-issues/video-is-frozen | | Address ACS video quality issues from high CPU load | https://learn.microsoft.com/en-us/azure/communication-services/resources/troubleshooting/voice-video-calling/video-issues/video-sender-has-high-cpu-load | ### Best Practices | Topic | URL |