Overview
The VIAVI Signaling Analyzer Real Time (SART) is a high-performance solution for 2, 2.5, 3 and 4G system verification, troubleshooting, and RAN optimization. Its intelligent call trace-centric approach enables distributed call trace, performance measurements, and drill-down problem isolation for calls on UMTS, GSM, TD-SCDMA, and CDMA RANs, as well as the mobile core, IMS, PSTN and Internet.
Support of GSM evolution
The VIAVI Signaling Analyzer Real Time (SART) supports the evolution of GSM:
Network architecture support
Complete coverage of architectures to correlate calls end to end from GERAN to the rest of the network:
- GERAN
- ATM and IP-Based UTRAN, Core, IMS, PSTN, Internet
Specific benefits for Signaling Analyzer GSM GPRS EDGE
- Rapid problem identification and isolation
- Quickly and easily identify Call Setup and Clear Down Performance affected by traffic load and signaling issues.
- Immediately flags you when unsuccessful calls reach a predefined threshold
- A, Gb, Gn call trace
- Abis is usually vendor specific. Support for specific Abis vendors can be discussed with VIAVI personnel.
- UMTS to GSM Handover Analysis
- GPRS, EGPRS and Handovers between GPRS/EGPRS
- GERAN/UTRAN Inter-working Optimization
- Multiple BTS Abis links can be analyzed using one DNA
- Auto detect between TRAU 16k, TRAU 8k and PCU
- Abis and Gb Control and User Plane Filtering
- Online/Offline PCU Reassembly to RLC/MAC frames
- Online/Offline RLC/MAC Reassembly into LLC PDUs (CP and UP)
- Selectively discards PCU/RLC/MAC PDUs after RLC/MAC Reassembly
- PCU Frame Quality Indicator retained as part of the RLC/MAC PDU header
- PCU Frame Quality Indicator used for Selective Reassembly RLC/MAC
- RLC/MAC retransmissions indicated in the Traffic Overview
- A, Gb, Gn protocol decodes are R5 compliant
- Real Time Auto Deciphering, including complete de-ciphering of all Iub and Gb links messages, GEA 1/2/3 Support and C1/C2 algorithms to convert 3G ciphering information into 2.5G