|  | Radio broadcast receiver | 
  
    |  | Mobile radio trunk system | 
  
    |  | High Frequency (HF) radio | 
  
    |  | VHF/UHF radio system equipment | 
  
    |  | PTP/PMP (Point-to-Point/Point-to-Multipoint) microwave fixed radio system | 
  
    |  | IP security equipment | 
  
    |  | Router | 
  
    |  | LAN (Local Area Network) switch | 
  
    |  | Precision time control Grandmaster equipment | 
  
    |  | IP multimedia conferencing equipment | 
  
    |  | Mobile Management Entity | 
  
    |  | POS (Point of Sale) | 
  
    |  | Conferencing equipment | 
  
    |  | Signaling Gateway | 
  
    |  | Media Gateway | 
  
    |  | Softswitch | 
  
    |  | Digital Subscriber Line equipment | 
  
    |  | Session border controller | 
  
    |  | Base station controller | 
  
    |  | Mobile switching centre | 
  
    |  | Equipment identity register | 
  
    |  | Subscriber identity module | 
  
    |  | OTA (Over-The Air) platform & device manager platform | 
  
    |  | Home location register | 
  
    |  | Serving GPRS (General Packet Radio Service (mobile data standard on the 2G and 3G cellular communication networks)) support node | 
  
    |  | Serving gateway | 
  
    |  | Mobile management entity | 
  
    |  | Short message service centre | 
  
    |  | Cell broadcast centre | 
  
    |  | Service control point | 
  
    |  | Operation maintenance centre | 
  
    |  | Gateway mobile location centre | 
  
    |  | Service mobile location centre | 
  
  
    |  |