CA300J: CELL_IMM_ASS_REQ
This measurement provides the number of CHAN REQ messages sent by the MS for circuit services. In the CHAN REQ message, the access reason can be MOC, MTC, Call Re-Establishment, Emergency Call, or Locating Updating.
Integer number or integer.
As shown in Figure 1, each time the BSC receives a CHANNEL REQUIRED message from the BTS and the access reason is MOC, MTC, Call Re-Establishment, Emergency Call, or Locating Updating (see measurement point A), the counter is incremented by one.
Channel Requests (Circuit Service) = Channel Requests (MOC) + Channel Requests (MTC) + Channel Requests (Emergency Call) + Channel Requests (Call Re-establishment) + Channel Requests (Location Updating)