Hi guys, this article will introduce the T-CONT (Transmission Containers) types.
The T-CONT contains five types. You can select different types of T-CONTs according to different types of services. Each T-CONT bandwidth type has specific QoS characteristics, which are mainly classified into fixed bandwidth, assured bandwidth, assured/maximum bandwidth, maximum bandwidth, and hybrid mode.
The details are as follows:
Type1:
The fixed bandwidth is reserved for specific ONUs or specific services on ONUs. It cannot be used by other ONUs even if no upstream service streams are carried on the specific ONUs.
It applies to services that are sensitive to service quality. The services can be TDM or VoIP services.
Type2:
The assured bandwidth is available at any time required by an ONU. When the bandwidth required by the service streams on the ONU is smaller than the assured bandwidth, the system can use the DBA mechanism to allocate the remaining bandwidth to services on other ONUs.
Because DBA is required, this type provides less real-time performance compared with the fixed bandwidth.
Type3:
This type is the combination of the assured bandwidth and maximum bandwidth. The system assures some bandwidth for subscribers and allows subscribers to preempt bandwidth. However, the total used bandwidth cannot exceed the maximum configured bandwidth.
It applies to VoIP services.
Type4:
This type is the maximum bandwidth that can be used by an ONU, fully providing the bandwidth required by the ONU.
It applies to IPTV and other high-speed Internet services.
Type5:
This type is the combination of fixed, assured, and maximum bandwidth. It supports the following functions:
Reserves bandwidth for subscribers and the bandwidth cannot be preempted by other subscribers.
Provides the bandwidth to an ONU at any time when required
Allows subscribers to preempt some bandwidth. (The total used bandwidth cannot exceed the maximum configured bandwidth.)
Thanks for your reading!
