iOS CallKit + WebRTC for AI Voice Agents: 2026 Production Guide
CallKit + WebRTC + PushKit is the only Apple-blessed path for AI voice agents on iOS. Here is the 2026 production playbook with audio-session, ICE, and CXProvider details.
11 min
Archive page 1066 of 1230
AI Voice Agent Insights & Guides
Browse older CallSphere articles on AI voice agents, contact center automation, and conversational AI.
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Encryption at Rest (AES-256) for AI Call Audio and Transcripts in 2026
The 2024 NPRM moves encryption of ePHI from addressable to required. Here is how an AI voice platform actually encrypts call audio, transcripts, embeddings, and analytics at rest under 45 CFR 164.312 in 2026.
11 min read
mcp-postgres in 2026: Read-Only Views Are the Right Default for AI Agents
How the Postgres MCP server exposes schemas and queries to LLMs without letting them rewrite your tables. Read-only transactions, scoped roles, and the patterns CallSphere uses across 115+ tables.
11 min read
Build a Fully Local Voice Agent with whisper.cpp + llama.cpp (2026)
Zero-cloud voice agent on a single laptop: whisper.cpp for STT, llama.cpp for the LLM, and Piper for TTS. No telemetry, no API keys, no per-minute bill — full working code.
13 min read
Missed-Call Recovery ROI Calculator for SMBs in 2026
62% of calls to small service businesses go unanswered and 85% of those callers never call back, costing the average SMB $126,000 a year. Here is the math and the calculator the CFO actually wants.
10 min read
Pre-Purchase Chat: Qualifying Leads With AI Before They Hit a Sales Rep in 2026
Websites with conversational AI see 23% higher conversion rates and shoppers who engage with AI chat convert at 12.3% vs 3.1%. Here is how to qualify leads with chat before they ever talk to sales.
10 min read
Streaming Call Transcripts Into ClickHouse for Sub-Second AI Voice Analytics in 2026
ClickHouse 26.2 added time-based block flushing and ClickPipes covers Kafka, S3, and Postgres CDC natively. Here's how CallSphere streams 50k voice agent transcripts a day into a ClickHouse cluster with sub-second p95 query latency.
12 min read
LNP Number Porting Walkthrough for an AI Receptionist in 2026
Porting an existing business line to a Twilio-backed AI receptionist takes 2 to 8 weeks, an LOA, and a CSR pull. Here is exactly what to expect, what blocks ports, and how to keep zero downtime during cutover.
11 min read
WebRTC + AI for Accessibility: Live Captions and Sign-Language Overlays in 2026
Captions belong next to the speaker; sign language belongs on a parallel video track. Here is the 2026 production blueprint for accessible WebRTC with AI captioning, RAUR-aligned UX, and HIPAA-safe transcripts.
11 min
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