To make understand the differences between NBN technologies, this article will run you through the high level details. For details on the technologies please see the NBN website.
Enable SRA (Seamless Rate Adaption) on your modem.
SRA allows a modem to make seamless rate changes in order to avoid dropping a connection. A rate change is a common affect of cross talk from adjacent lines, as well as by other interference such as temperature changes and radio waves.
Enabling SRA helps reduce the service dropping out on noisy lines.
Fibre to the Node is the most common of the NBN technology types
FTTN uses the existing copper network and the buildings existing internal cabling.
Quality of the service can be impacted by the quality of the buildings internal cabling.
Internal cabling is the responsibility of the customer.
FTTN uses vDSL technology which is a similar (but faster) to ADSL
FTTN services will require a vDSL compatible modem / router as this is NOT provided by NBN.
Service speed will depend on length of copper cabling between the service and the NBN node. This includes internal cabling within the building. The longer the distance, the lower the service speed will be.
FTTN and FTTB service speed may be impacted if the area is in Coexistence .
Coexistence is the time where NBN and traditional ADSL services are still sharing the copper network. The result of this is slower NBN services.
Coexistence will end 18 months after NBN has become available in the area when all legacy services (ADSL etc) will no longer be available and will be switched off.
It is recommended that high speed plans not be purchased for services that will be in Coexistence.
FTTN is often impacted by water / large storms as the copper in the street is easily impacted by water like with traditional ADSL.
Because of this it is recommended that a failover service be used (such as LTE) or a more reliable WAN service (fibre) be used for larger businesses.
In Multi Dwelling Units / Commercial Buildings, FTTN services are connected to the MDF and will require active lines be available. If they are not then “Subsequent Installation” charges will apply to have a new line installed or activated.
These charges do not include the cost of internal cabling or jumpering the newly activated line to internal cabling which is the responsibility of the customer.
Business Grade Symmetrical TC2 services are typically available up to 20/20Mbps depending on the quality of cabling external and internal cabling.
FTTN services account for the majority of NBN support tickets compared to other technologies.