Types of ASON services

Question:
What are the types of ASON services?
Answer:
Diamond service: important services that need to be kept for a long time and allow only transient interruptions, such as private lines for banks, securities, and important government sectors.
Gold service: services that have strict requirements on real-time processing, latency, and transient service interruption time, such as 2M and 3G voice services, and VIP customer services.
Silver service: services with unstable, burst, and heavy traffic, and that do not require real-time processing, such as data private line services, cell Internet access services, and cable TV services.
Copper service: temporary services. The impact is small even if such a service is interrupted.
Summary and Suggestion:
An important feature of ASON is the survival against multiple faults. The survivability requirements are as follows:
A diamond service can be rerouted to a new trail for at least once after its working or protection trail becomes faulty.
A gold service can undergo at least one protection switching and can be rerouted and restored for at least once.
A silver service can be rerouted and restored for at least once.
For the first or last node of a service, when a link that carries the maximum service bandwidth becomes faulty for the first time, the impaired service can be restored to another fiber of the node. It is recommended that the services be converged into VC-4 services outside ASON NEs if possible. If tunnel services are required, gold tunnels are preferentially selected. Silver tunnel is the second choice. In this case, you need to create two silver tunnels with separate routes, and configure lower-order SNCP services for dual-feeding and selective receiving of the two silver tunnels.

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