Agilent/Keysight 37900D

The Agilent/Keysight 37900D Signaling Test Set monitors and analyzes signaling links in telecommunications networks with real-time performance measurement capability. This portable instrument simultaneously tracks up to four bi-directional signaling links, making it essential for in-service diagnostics, installation verification, and network maintenance across fixed and wireless infrastructures. Engineers deploy it to capture live signaling interactions, apply targeted triggers and filters, and validate protocol compliance across legacy and modern network deployments.

– Technical Specifications

• Simultaneous monitoring of up to 4 bi-directional signaling links
• Real-time display of signaling interactions
• Dedicated trigger and filter architecture for message collection
• Weight: approximately 25 lbs

– Key Features

• Full keyboard interface for command entry and navigation
• Floppy disk drive for data storage and configuration management
• Status LED indicators for operational state monitoring
• Protocol support includes GSM, PCS, IS41, MAP, ITU-T, ETSI, ANSI, Bellcore, AIN, INAP, V5, X.25, ISDN BRI, ISDN PRI, and national variants

– Typical Applications

• In-service performance measurement on active signaling links
• Protocol compliance verification during network installation
• Real-time troubleshooting of signaling path anomalies
• Message capture and analysis for network maintenance
• Multi-protocol monitoring in heterogeneous telecom environments

– Compatibility & Integration

• Option 001: Enables full 4-link monitoring capability
• Option 003: Adds signaling emulation functionality
• Option 170: Provides 170 MB hard drive storage upgrade