HP / Agilent N1725A

The N1725A AuroraDuet Complete Primary and Basic Rate ISDN Tester has been designed to provide ISDN technicians and engineers an installation, troubleshooting and maintenance, integration, and product development tool. Its versatility lies in being able to emulate ISDN from both the network and customer sides. The troubleshooting capabilities provide testing of local loop at the U-interface, in TE mode it simulates terminal equipment and validates line operation on S/T and U interfaces, checks cable continuity to S bus problems, and monitors D-Channel traffic on S/T and U interfaces for problem analysis. The auroraDuet can simulate the NT and LT, appearing as the network itself. Installers can commission and set-up equipment before delivery. Validation of ISDN services to the customer site is provided in the TE mode. Portability is assured with rechargeable NiCad batteries or the AC/DC power adapter included.

Emulation

• TE Mode emulates Customer Premise Equipment (S and U Interfaces)
• NT Mode emulates the network on the S interface
• LT Mode emulates the network on the U interface
• T1 Signaling capability to emulate switch or user side and monitor using Ground Start, Loop Start and E&M commands
• Phantom Power PS 1 for S-bus devices

Monitor and Analysis Capability

• Monitor, capture and filter signaling traffic on S, U and Primary Rate interfaces
• On-Screen real time decode of D-Channel activity
• Physical Layer Monitoring of Remote Alarm, CRC Error, Sync Alarm, Signal Detects, AIS, Activation and Info State
• Listen to B Channel Traffic
• Onboard Storage of captured signaling traffic for analysis with auroraExpert

Automatic Service Tests

• Identifies services available on the line under test
• Checks line configuration
• BER Tests check Quality of Service
• 2B Check for 128 kbps applications
• Validates service across all Primary Rate channels

Voice and Data Testing

• Complete 1.544 Mbps BER Testing for out of service qualification of T1 lines
• Hands-free capability for listening to voice calls
• Selectable pre-set and user defined patterns and time periods for Bit Error Rate (BER) Tests
• Bit Error Injection automatic or manual
• Automatic or manual call answer with data loopback
• Unattended mode with call screening
• Display Bit Errors, Bits Received, Errored Seconds and Sync Loss during test
• Full Remote Control across PSTN or ISDN TA through "Virtual Instrument" control on PC

BERT Statistics

• G.821 Statistics conform to G.821 recommendations
• Results Displayed as absolute values or percentages
• Pass/Fail indication on timed tests against a pre-set threshold
• Results on-screen or on hard copy using a local printer