Dedicated Physical Data Channel (DPDCH) is a physical channel in 3G UMTS networks that carries user data and higher-layer signaling. It operates alongside the control channel to form a complete radio link between the mobile equipment and the base station. Network engineers monitor DPDCH power levels and error rates to ensure voice and data streams remain stable during a call.
The UE is dropping the call because the uplink DPDCH transmission power is maxing out.
Related terms
DPCCH
Dedicated Physical Control Channel carries signaling and control information between a mobile device and a UMTS base station.
UMTS
A third-generation cellular standard based on wideband code division multiple access.
3G
The third generation of mobile telecommunications technology, known for introducing mobile broadband to cellular networks.