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24 NTU Optical Network Terminals
A connection to the OB device (successful connection to a stationary OLT) additionally creates the
gpondef blocks with the help of the OMCI protocol (ONT Management and Control Interface). The block ensures
connection of the subscriber’s ONT device to station-side equipment.
Fig. 13—Architecture of the Device Configured for Triple Play Model 1 Services
Model 1 Services
The blocks created by the OMCI protocol during connection to OLT (left) are shown for clarity and do not
describe the real architecture.
The gemport blocks represent logical terminals of gem ports that are used for transmitting traffic of
various services.
The GEM4094 block is a logical terminal of the GEM port used for multicasting. It multicasts traffic
downstream. WAN Connection Device receives the multicast traffic from this block and sends it further to Bri
interfaces based on the table of IGMP groups.
The bronu0,9 blocks are MAC bridge service profiles (recommendation G.988).
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:
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