UMTS (Universal Mobile Telecommunications System) being an access network in the mobile communication area provides a common interface to both GSM and GPRS core network. UMTS is capable of handling both Circuit-Switched (CS) as well as Packet-Switched (PS) data simultaneously through its UTRAN network.
UMTS separates the user plane from control plane, radio network plane from the transport network plane, access network from the core network, and access stratum from the non-access stratum. Separation of transport network subsystem and radio network subsystem enables the UMTS to use multiple transport layer mechanism.
IP and ATM are the most preferred transport network layer protocols used in UMTS network architecture. ATM based UMTS network is more popular since it ensures various QoS and Classes of Services to the end user.
GL’s OC3 / 12 and STM1 / 4 UMTS analyzer is capable of capturing, decoding, and performing various test measurements across various interfaces i.e. Iub, Iur, IuCS and IuPS interfaces of the UMTS network based ATM transport layer. It helps in fault diagnosis and troubleshooting of UMTS network. Multiple instances of UMTS Analyzer can run simultaneously capturing data (real time and off-line) on multiple OC-3 or OC-12 interfaces.