In a general packet radio system (GPRS) network, the domain name
server (DNS) system is independent from the DNS system on the Internet.

Figure 1 Structure of the DNS system in a GPRS network


http://localhost:7904/pages/31185199/02/31185199/02/resources/figure/ch/SGSN/fig_60_126.png


As shown in Figure 1, the DNS system consists of the following levels:

• MCCXXX.GPRS.

  
  

  This domain name level uses mobile country code (MCC) to differentiate the GPRS networks of different countries.

  
  

• MNC

  
  

  This domain name level uses mobile network code (MNC) to differentiate the GPRS networks of one country.

  
  

• General APN

  
  

  It defines the general access point name (APN) across the entire network, such as CMWAP.

  
  

• Regional APN

  
  

  It differentiates the APNs of different regions, such as LN and NM.

  
  

  This APN level defines the APNs used in this region, such as Police
  and Government. If necessary, you can fractionalize this APN level.

  
  

• LAC

  
  

  LAC is used to differentiate LAs. The domain names under LAC are:

  
  
  • RAC: differentiates RAs
  • RNC ID: differentiates RNCs
  
  

  The preceding two domain names are end nodes.

  
  

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Thanks a lot for the doc.................

useful document, thanks