Cresta Agents 2026: From Real-Time Coaching to Autonomous CX
Cresta turned real-time agent assist into a full autonomous CX agent in 2026. Here's the deployment pattern, the customer wins at Intuit and Brinks.
8 min read
Archive page 770 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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Redis Pub/Sub for Multi-Region WebSocket Fanout in 2026
How to fan out WebSocket events across multiple regions with Redis pub/sub: shard-aware topology, federation, and the latency math that decides where to put the broker.
10 min read
RTP and the Opus Codec: AI Voice Quality from PSTN to Model
How RTP carries AI voice end-to-end, why Opus matters more than G.711 for model accuracy, and the codec negotiation patterns that ship in 2026.
10 min read
Kiosk-Mode WebRTC: QSR, Retail, and Hotel-Lobby Voice in 2026
White Castle is rolling out 1,000 voice kiosks; hotels and retail are not far behind. Here is the WebRTC architecture that powers the 2026 kiosk wave.
10 min
Human Escalation UX Patterns for Chat Agents in 2026
When the agent fails, the handoff is the entire experience. Here are the 2026 UX patterns — confidence-based, permission-based, and the warm transcript transfer.
10 min read
WebRTC + L4S (Low Latency, Low Loss, Scalable) for AI Voice in 2026
L4S is finally rolling out at the network layer in 2026. Here is what it does for AI voice latency, who supports it, and the realistic timeline for production.
10 min
LiveKit Agents 1.5 for Telephony in 2026: Native SIP, MCP Tools, Adaptive Interruption
LiveKit Agents went 1.0 in April 2025, hit 1.5 by April 2026, and shipped native SIP plus phone numbers so you no longer need a Twilio bridge. Add MCP tool support and adaptive interruption handling and it is the default open-source telephony framework for AI in 2026.
12 min read
Vendor Risk Management and Sub-Processor Audits for AI Voice Under HIPAA 2026
Every model vendor, telephony provider, and tool integration is a sub-processor under your BAA. Here is how a 2026 HIPAA-aligned AI voice platform audits the chain.
11 min read
mcp-aws in 2026: Bedrock AgentCore, S3, Lambda — the Official AWS MCP Servers
AWS launched the AWS MCP server GA on May 2026. We unpack the awslabs/mcp suite: AgentCore, S3 access, Lambda hosting, ECS deployment, and how to ship a streamable-HTTP MCP on AWS.
12 min read
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