Where cell phone jammer will be used is important

The manufacturer adopts the advanced foreign technology to enhance the design and technology of cell phone jammer .
To GSMl800 coverage area consisting of a two-tier network architecture. In order to give full play to the role of GSMl800 system, increase network traffic carrying capacity, dual-band networking in general the following principles: call on the preferred band. GSMl800 system early establishment of a small number of dual-band mobile phone users, more free channels and high carrier to interference ratio should be a reasonable device, dual-band mobile phone as much as possible into the GSM1800 system, reducing the GSM900 system loads. Under normal circumstances, switching to the preferred band. Move fast enough dual-band users in the switching process should be as far as cut GSM1800 cell. Where  cell phone jammer will be used is important.
When found not a high level of the cell, select the Cl-largest district in the low level of residential registration. However, for Phase2 GSM900 mobile phone, each time the cell selection to get a higher priority cell exists, must scan all of the BCCH channel to judge, and in the cell reselection process, there are other methods to control the phone in idle mode cell selection. In the early stage of network construction, GSM1800 as a preferred network, a CBQ is set to 0 (normal) level, GSM900 of CBQ is set to 1 (low level). Dual-band mobile phone network, as long as the reception level is greater than the network level GSMl800 district exist, the phone will select GSMl800 district registration network.
We conducted in-depth study on this issue, and finally found the problem in the dual-band switching. The following is a BSC BSC busy switching statistics: the BSC dropped calls then the total number of 288. From the above table we can draw the following conclusions: G network to D network handover success rate is significantly lower. The switch does not match between the dual-band, G-D is far more than the D-G, which is caused due to the reduction of the CRO. D network into the level above the basic-80DB, at this point, the signal strength of the G network is certainly higher, dual-frequency switching loss, the user is unlikely to dropped calls. Therefore, the G-D switching loss caused by dropped calls can be seen as the negative impact of the dual-band network.
The introduction of the GSM1800 system can be used independent of the MSC, the MSC share, share BSC and even share the BTS and other networking. Independent MSC means the establishment of one or more of the GSM1800 MSC as the end office of the existing GSM network, all GSM1800 base station equipment connected to the GSM1800 the MSC, constitute a regional coverage. In this way, the GSM900 and GSM1800 for devices from different manufacturers. Switching time between the GSM900 and GSM1800, signaling load, the low success rate. When a high proportion of dual-band handsets, the GSM900 and GSM1800 double-layer gateway balance of the business is not easy. So that the manufacturer should produce cell phone jammer as per the specific requirements of the school.