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SIP.IO
What it is
SIP.IO is a programmable voice and cloud contact center platform for UCaaS, CCaaS, and Voice AI. Its listed services include business phone service and SIP trunking, alongside skills-based queues, agents, a wallboard, and reporting. Developers can embed a softphone for browser-based WebRTC calling within an app. Messaging options include SMS-to-email and inbound SMS webhooks with HMAC-signed requests. Call recording can follow policies, pause and resume mid-call, and be accessed through an audited playback API. Voice AI agents can escalate to people, and teams can use searchable call transcripts and AI summaries or bring their own AI provider. SIP.IO also lists managed, white-label Microsoft Teams Direct Routing with tenant provisioning by API. The free tier includes trial credit, a test phone number, and access to call flows, queues, and contact center features without a credit card. Usage-based voice and number rates require contacting SIP.IO; published rates are examples, not a final rate card. SIP.IO says it is ISO/IEC 27001 certified. It says SOC 2 Type II has not been audited yet, and HIPAA and a Business Associate Agreement program are not offered.
For and against
For
- Free tier includes a test phone number
- Browser-based WebRTC softphone
- Call recording supports pause and resume
- Voice AI agents can escalate to people
- ISO/IEC 27001 certified
Against
- Current usage rates require contacting SIP.IO
- Published rates are examples only
- HIPAA is not offered
- SOC 2 Type II has not been audited
The verdict
SIP.IO combines programmable voice services with contact center, messaging, recording, and AI features. The free tier supports testing, while current usage pricing requires an inquiry.
Who it suits
SIP.IO is aimed at developers, BPOs and contact centers, and resellers or white-label operators. Its listed tools suit teams building voice, messaging, and contact center workflows.
Plans and prices
Free tier
Free trial credit · test phone number · full access to call flows, queues, and contact center · no credit card
Read 5 Oct 2026 · sip.io
Usage-based
No per-seat licenses · no minimums · month-to-month · published rates are examples only, not the final rate card
Read 5 Oct 2026 · sip.io
On the record
- AI features
- SIP.IO offers voice AI agents with human escalation and searchable call transcripts and AI summaries, including the option to bring your own AI provider.sip.io · read 5 Oct 2026
- Browser calling
- SIP.IO lists an embedded softphone for browser-based WebRTC calling inside an app.sip.io · read 5 Oct 2026
- Call recording
- Call recording supports policy-driven recording, mid-call pause and resume, and an audited playback API.sip.io · read 5 Oct 2026
- Certification
- SIP.IO says it is ISO/IEC 27001 certified and that SOC 2 Type II is on the roadmap and has not been audited yet.sip.io · read 5 Oct 2026
- Compliance limits
- The Trust Center says HIPAA is not offered and SIP.IO has no Business Associate Agreement program.sip.io · read 5 Oct 2026
- Inbound calling
- Yessip.io · read 24 Sep 2026
- Intended users
- The documentation says SIP.IO is built for developers, BPOs and contact centers, and resellers or white-label operators.sip.io · read 5 Oct 2026
- Messaging
- The platform lists SMS-to-email and inbound SMS webhooks, with webhook requests HMAC-signed.sip.io · read 5 Oct 2026
- Microsoft Teams
- SIP.IO lists fully managed, white-label Microsoft Teams Direct Routing, with tenant provisioning by API.sip.io · read 5 Oct 2026
- Pricing limits
- The published voice and number rates are labeled examples rather than the final rate card, and SIP.IO asks customers to contact it for current pricing.sip.io · read 5 Oct 2026
- Security
- The Trust Center says API, dashboard, and SIP signaling use TLS 1.2 or higher, while voice media uses SRTP and WebRTC uses DTLS-SRTP.sip.io · read 5 Oct 2026
- Security support
- SIP.IO invites vulnerability reports by email and says it aims to send an initial response within three business days.sip.io · read 5 Oct 2026
- Voice and contact center
- Its listed capabilities include business phone service, SIP trunking, skills-based queues, agents, wallboard, and reporting.sip.io · read 5 Oct 2026
- What it does
- SIP.IO describes itself as an edge-native programmable voice and cloud contact center platform for UCaaS, CCaaS, and Voice AI.sip.io · read 5 Oct 2026
