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            NTU Optical Network Terminals    31 
The  TR-069  client  block  is  used  for  device  remote  control  with  the  help  of  the  ACS  server  (Auto 
Configuration  Server)  via  TR-069  protocol.  The  block  is  used  to  establish  communication  between  ACS  and 
subscriber’s equipment, process ONT queries, and configure services. 
The  WANConnectionDevice  block  is  an  object  associated  with  WAN  interface.  It  is  an  interim interface 
between the OMCI and RG parts of the device. 
The veip 0.n blocks are WAN interfaces of the device’s router; each of the interfaces is used to provide a 
certain type of services. In this example: 
–  veip0.1 is for the Internet; 
–  veip0.2 controls the multicast traffic; 
–  Veip0.3  provides VoIP services; 
–  veip0.4 provides VPN service on a separated port; 
–  veip0.5 provides other services (alarm system); 
–  veip0.6 provides VoD and IPTV on STB.  
These WAN interfaces have the following operation modes: 
–  PPPoE—starts PPP client; 
–  IPoE DHCP—starts DHCP client; 
–  IPoE Static—uses a static address; 
–  Bridging—operates in the bridge mode. 
The  bri  blocks  are  the  objects  of  the  2nd  level  and  operate  as  bridges  between  the  LAN  and  WAN 
interfaces to  include the  interface into  one  group.  The  br1  block is connected to  the  veip0.1 interface, which 
operates in the PPPoE mode, and to the eth0 port. The br4 block operates in bridge + DHCP mode in order to 
use the address of this interface for SIP client (Voice block). The br2, br5,br6  blocks operate as a bridge, which 
allows transparent traffic transmission to the LAN ports of the router. 
The eth0...3 blocks represent LAN interfaces for connection of subscriber’s equipment.