1.同步光网络(SONET):
SONET代表同步光网络。这是Bellcore开发的一种通信协议,用于通过使用光纤在相对较大的距离上传输大量数据。通过使用此功能,可以在光纤上同时传输多个数字数据流。
2.光传送网(OTN):
OTN代表光传输网络。这是用于通过光纤网络发送网络消息的协议。它旨在通过提供透明的框架来有效地承载各种流量类型来解决这些问题。形成了两层交换(TDM和WSON),并定义了传输,管理,监督,多路复用,路由和生存能力的功能。
SONET和OTN之间的区别:
S.No. | SONET | OTN |
---|---|---|
1. | Synchronous mapping of payloads. | Asynchronous mapping of payloads. |
2. | It is designed to operates on multiple wavelength. | It is designed to operates on multiple wavelength(DWDM). |
3. | It requires right timing distribution across network. | It does not require timing distribution. |
4. | It was defined with fixed frame rates. | It was defined with fixed frame sizes. |
5. | It is less efficiently than OTN. | It is much more efficiently than SONET. |
6. | It performs multi stage multiplexing. | It performs single stage multiplexing. |
7. | It scales to maximum of 40Gb/s. | It scales to 100Gb/s (or beyond). |
8. | It does not has any standard FEC. | It has FEC size for error correction to correct 16 blocks per frames. |