# signalwire.com

> AI-optimized mirror of signalwire.com containing 50 pages totalling 48,046 words of clean markdown content, structured data, and semantic HTML. Original source: https://signalwire.com. Last updated: 2026-08-07T13:17:06.961Z.

Each page is available as HTML (with JSON-LD structured data) and Markdown (text-only, ideal for LLMs and RAG).

## Homepage

- [The Communications Control Plane | SignalWire](/content/site-root.html): Build AI voice agents, contact centers, and unified communications on one programmable platform. One control plane, no vendor stitching. (1,110 words)

## Articles & Blog Posts

- [Metaswitch End-of-Life: Your Guide to Migrating to a New Platform | SignalWire](/content/blog/metaswitch-end-of-life/index.html): What you need to know about switching from Metaswitch (1,855 words)
- [5 Pitfalls to Avoid When Building Advanced Voice AI Systems | SignalWire](/content/blog/building-advanced-voice-ai-systems/index.html): The biggest roadblocks standing in your way (and how to avoid them) (2,030 words)
- [What 'Low Latency' Really Means in Voice AI | SignalWire](/content/blog/what-latency-means-voice-ai/index.html): What is “good” latency for voice AI? (1,641 words)
- [LiveKit Alternative for Voice AI Telephony | SignalWire](/content/c/livekit-alternative/index.html): LiveKit handles video rooms well. When the use case is voice AI answering phone calls, the architecture needs native telephony, not a WebRTC bridge. (943 words)
- [Voice AI Platform Performance Analysis | SignalWire](/content/c/performance-analysis/index.html): When latency exceeds natural conversational thresholds, users interrupt, repeat themselves, or disengage entirely. Architectural design decisions materially affect conversational responsiveness. (788 words)
- [Choosing the Right SMS Telephone Number for Your Campaigns: 10DLC, Toll-Free, or Short Code | SignalWire](/content/blog/choosing-the-right-number-type-for-your-sms-campaigns-10dlc-toll-free-or-short-code.html): Which type of number is best for your use case? (1,490 words)
- [Production Reliability: Close the Demo-to-Production Gap | SignalWire](/content/c/production-reliability/index.html): Multi-vendor voice AI creates failure modes that do not appear in development. One stack eliminates the vendor chain that breaks under load. (863 words)
- [SignalWire Documentation | SignalWire](/content/docs/index.html): Build powerful communication applications with SignalWire. Explore our REST APIs, Realtime SDKs, and comprehensive guides. (188 words)
- [Production Observability: Debug Voice AI in Minutes, Not Hours | SignalWire](/content/c/production-observability/index.html): Multi-vendor voice AI gives you four dashboards with zero correlation. SignalWire gives you one structured event stream with per-component latency, barge-in analytics, and error classification. (858 words)
- [Say | SignalWire](/content/docs/compatibility-api/cxml/reference/voice/say/index.html) (1,259 words)
- [Voice AI Infrastructure for Startups | SignalWire](/content/segment/startup/index.html): Carrier-grade voice, messaging, and AI infrastructure with a free tier, 6 SDKs, and pricing that scales with you. Built by the FreeSWITCH team.  (860 words)
- [Swap the Telephony. Keep Your Stack. | SignalWire](/content/c/swap-telephony-keep-your-stack/index.html): Replace the telephony bottleneck underneath your AI orchestration without changing the AI layer. (555 words)
- [Ship Voice AI in Weeks, Not 18 Months | SignalWire](/content/c/ship-voice-ai-in-weeks/index.html): Building a voice AI stack from scratch takes six vendors, three engineers, and a year of glue code before your first production call. (565 words)
- [Voice AI That Speaks Carrier-Grade SIP | SignalWire](/content/c/voice-ai-carrier-grade-sip/index.html): Session Timers, Re-INVITEs, and QoS Preconditions: carrier-grade SIP features built into a production voice AI platform. (553 words)
- [Build Voice AI in Python, Not Prayers. | SignalWire](/content/c/build-voice-ai-in-python/index.html): Building a voice AI stack from scratch takes six vendors, three engineers, and a year of glue code before your first production call. (504 words)
- [Build an AI Personal Assistant With Appointment Scheduling | SignalWire](/content/blog/ai-personal-assistant/index.html): Introducing Ethan: An AI personal assistant app (1,092 words)
- [Voice Overview | SignalWire](/content/docs/compatibility-api/cxml/reference/voice/index.html) (1,085 words)
- [Trillions of Minutes. Now With an AI Kernel. | SignalWire](/content/c/two-decades-of-voice-infrastructure/index.html): Two decades of FreeSWITCH voice infrastructure and a native AI kernel behind every production call. (476 words)
- [Voice AI Callers Do Not Hang Up On | SignalWire](/content/c/voice-ai-callers-actually-like/index.html): No interruptions, repeated information, or cold transfers. Build voice AI around the caller experience. (517 words)
- [Call Flow Builder: A Low-Code Application Builder | SignalWire](/content/blog/call-flow-builder-beta-a-low-code-application-builder.html): Build an easily customizable IVR with unrivaled simplicity (1,361 words)
- [Customer notifications that can hold a conversation - SignalWire](/content/use-case/customer-notifications/index.html): Send reminders, alerts, and confirmations by SMS. The same platform places the follow-up call and hands off to a human with the conversation history intact.  (1,191 words)
- [Dial | SignalWire](/content/docs/compatibility-api/cxml/reference/voice/dial/index.html) (1,181 words)
- [System-Directed AI | SignalWire](/content/platform/system-directed-ai/index.html): Real time AI that runs on your code, not just prompts. AI agent platform with deterministic guardrails, ~1.2s latency, and full control over every call.  (881 words)
- [Rooms Are Great. Calls Need a Phone Company. | SignalWire](/content/c/ai-telephony/index.html): LiveKit is a strong WebRTC media server for rooms. Phone calls require native SIP, PSTN, and transfers that room-based architecture cannot provide. (401 words)
- [Voice AI Fails When State Splits | SignalWire](/content/c/why-voice-ai-fails/index.html): External state management is the single biggest source of production failures in voice AI. The fix is not better code. It is a different architecture. (482 words)
- [Resource Hub for A2P 10DLC Political Campaigns | SignalWire](/content/blog/resources-political-campaigns/index.html): How to register 10DLC with SignalWire and resources to get started (1,220 words)
- [Stop Reconstructing Call State From Webhooks. | SignalWire](/content/c/twilio-migration-guide/index.html): Building a voice AI stack from scratch takes six vendors, three engineers, and a year of glue code before your first production call. (482 words)
- [Keep Your AI. Replace What’s Underneath. | SignalWire](/content/c/keep-your-ai/index.html): Your AI agent works. The telephony layer underneath it adds latency, cost, and failure modes that do not scale. (471 words)
- [Developer Community | SignalWire](/content/developers/community/index.html): Join SignalWire's developer community: Discord, forums, Friday Hangouts, ClueCon, and 20+ years of FreeSWITCH open-source history. (601 words)
- [Release Notes | SignalWire](/content/developers/release-notes/index.html): SignalWire release notes: new features, fixes, and deprecations across the platform and SDKs, updated regularly. (517 words)
- [Webhooks | SignalWire](/content/docs/platform/webhooks/index.html): An introduction to using webhooks to receive information and events about calls and messages. (657 words)
- [Your AI Vendor’s Vendor Has a Vendor. | SignalWire](/content/c/platform-architecture/index.html): Building a voice AI stack from scratch takes six vendors, three engineers, and a year of glue code before your first production call. (520 words)
- [Case Study: Enterprise CCaaS | SignalWire](/content/c/case-study-enterprise-ccaas/index.html): A global enterprise CX platform achieved 99.99% availability and in-jurisdiction European data processing with a SignalWire Dedicated Real-Time Region. (469 words)
- [One Price. One Invoice. No Token Math. | SignalWire](/content/c/voice-ai-pricing/index.html): Building a voice AI stack from scratch takes six vendors, three engineers, and a year of glue code before your first production call. (522 words)
- [Transfers Should Carry the Conversation. | SignalWire](/content/c/warm-transfer-with-full-context/index.html): Warm transfers preserve context, authentication state, tool results, and a machine-written conversation summary. (435 words)
- [Enterprise Communications Platform | SignalWire ](/content/segment/enterprise/index.html): Replace legacy CCaaS with a programmable contact center. Unify AI agents, human agents, queues, and campaigns with SOC 2, HIPAA, and PCI compliance.  (787 words)
- [FreeSWITCH & Open Source | SignalWire](/content/developers/freeswitch/index.html): FreeSWITCH is the open-source communication framework powering some of the world's largest telephony infrastructures, maintained by SignalWire. (595 words)
- [Voice, Messaging & AI Pricing | SignalWire ](/content/pricing/index.html): Transparent, usage-based pricing for SignalWire's programmable voice, messaging, video, fax, MFA, and AI agent APIs. (619 words)
- [Carrier-Grade Communications | SignalWire](/content/platform/carrier-grade-api/index.html): Voice, SMS, video, and every communications primitive on one carrier-grade platform, built by the team that wrote the engine. Not a CPaaS wrapper.  (855 words)
- [Record | SignalWire](/content/docs/compatibility-api/cxml/reference/voice/record/index.html) (628 words)
- [Guides, Customer Stories & Videos | SignalWire](/content/resources/index.html): Browse the SignalWire resource center for technical guides, customer stories, videos, and tools for building voice AI and real-time communications. (303 words)
- [Voice AI & Communications Use Cases | SignalWire ](/content/use-case/index.html): Explore SignalWire's use cases: AI voice agents, contact centers, IVRs, outbound campaigns, and customer notifications, all on one programmable platform. (371 words)
- [Events & Webinars | SignalWire ](/content/resources/events/index.html): See where to find SignalWire next. Explore upcoming webinars, conferences, meetups, and community events, including ClueCon and the weekly hangout.  (136 words)
- [Careers | SignalWire](/content/careers/index.html): Help build the communications control plane the industry needs. Join the engineers who wrote FreeSWITCH and the platforms running on top of it., SignalWire, Inc Jobs (701 words)
- [Number | SignalWire](/content/docs/compatibility-api/cxml/reference/voice/number/index.html) (498 words)
- [Why SignalWire: One Stack for Voice AI | SignalWire](/content/why-signalwire/index.html): SignalWire is the only control plane where voice AI and telephony run on the same real-time media engine. No orchestration tax, ~1,200ms latency. (1,812 words)
- [Programmable Unified Communications | SignalWire](/content/platform/programmable-unified-communications/index.html): CPaaS pushes state management onto your code. SignalWire's programmable unified communications platform owns call state, lifecycle, and routing with low latency AI built in. (9,531 words)
- [Trial mode | SignalWire](/content/docs/platform/trial-mode/index.html): Understand the restrictions on new SignalWire accounts and how to remove them. (102 words)
- [Every Vendor Hop Costs You 200ms | SignalWire](/content/c/vendor-hops/index.html): Full roundtrip latency is what callers feel. Every external vendor boundary adds delay, variance, and another failure mode. (485 words)

## Resources

- [Full Page Index](/index.html): Browse all cached pages with rich metadata
- [About This Cache](/about.html): Methodology, technical details, and usage guidelines
- [XML Sitemap](/sitemap.xml): Machine-readable sitemap for crawler discovery
- [Robots.txt](/robots.txt): Crawler directives