PSAP Recording & Playback: Evidence Management

Overview#

The PSAP Recording & Playback module provides comprehensive evidence management for emergency call recordings, supporting multi-format capture, secure storage, chain-of-custody tracking, court-ready exports, and CJIS-compliant access controls for Public Safety Answering Points.

Key Features#

Core Capabilities#

Multi-Channel Call Recording#

• Format: 16-bit PCM, 8 kHz minimum (telephony quality)
• Enhanced: 24-bit, 48 kHz for high-fidelity VoIP and NG911 calls
• Codec: G.711, G.722, Opus depending on call type
• Noise Reduction: Optional pre-processing to improve clarity

Synchronized Screen Capture#

• Full-Screen Recording: Captures entire desktop or specific applications
• Multi-Monitor Support: Records all screens simultaneously (up to 6 monitors)
• Frame Rate: 30 FPS standard, 60 FPS available for training analysis
• Resolution: Native resolution up to 4K (3840x2160)

Instant Playback & Search#

• Real-Time Transcription: Calls transcribed during recording
• Accuracy: 96.significant transcription accuracy on emergency vocabulary
• Keyword Library: 500+ emergency terms indexed (weapons, medical, fire)
• Phrase Search: Multi-word phrases ("not breathing", "chest pain")

Quality Assurance & Scoring#

• Answer Time (5 pts): Answered within target time
• Greeting (3 pts): Proper greeting used ("911, what is your emergency?")
• Voice Quality (3 pts): Clear, calm, professional tone
• Active Listening (4 pts): Appropriate responses, minimal interruptions

Integration Architecture#

CAD System Integration#

Recordings automatically link to CAD incidents for evidence management:

• Incident Linking: Recording IDs embedded in CAD incident records

• One-Click Playback: CAD users click to play recording from incident screen

• Synchronized Timeline: CAD entries timestamped match recording timeline

• Export Bundling: CAD report + recording exported together for court

• Incident Linking: Recording IDs embedded in CAD incident records

• One-Click Playback: CAD users click to play recording from incident screen

• Synchronized Timeline: CAD entries timestamped match recording timeline

• Export Bundling: CAD report + recording exported together for court

Evidence Management Integration#

• Chain of Custody: Cryptographic signatures track all access
• CJIS Compliance: FBI Criminal Justice Information Services standards
• Court Export: Format conversion for legal playback systems
• Redaction: Remove PII while maintaining evidentiary value

Benefits#

• significant call recording compliance (zero missed recordings in 18-month deployments)
• significant data loss through triple-redundant architecture
• 1 MB to 4 MB per hour storage depending on quality level
• Significant improvement in storage costs through compression
• 2.3 TB average storage per PSAP per month (2,000 calls/day at enhanced quality)
• Chain of Custody: Cryptographic signatures verify recording integrity
• Tamper Detection: Write-once storage prevents modification
• Audit Trails: Complete logs of who accessed recordings and when

Use Cases#

• Emergency dispatch centers requiring reliable, high-performance operations
• Multi-agency coordination during complex, multi-unit incidents
• Quality assurance and compliance monitoring programs
• Training and skill development for dispatch personnel
• Regional dispatch consolidation and shared services
• Accreditation preparation and ongoing compliance documentation

Integration#

• Incident Linking: Recording IDs embedded in CAD incident records
• One-Click Playback: CAD users click to play recording from incident screen
• Synchronized Timeline: CAD entries timestamped match recording timeline
• Export Bundling: CAD report + recording exported together for court
• Chain of Custody: Cryptographic signatures track all access
• CJIS Compliance: FBI Criminal Justice Information Services standards
• Court Export: Format conversion for legal playback systems
• Redaction: Remove PII while maintaining evidentiary value

Last Reviewed: 2026-02-04