asdl

Product defines the core products that are provided by the company, such as ASDL, Land Line, and so on.

定义了公司提供的核心产品，如asdl、Land Line等等。

An ASDL document contains a list of available LSIDs and their corresponding data and metadata locations.

一个ASDL文档包括一个可用的LSID及相应数据和元数据位置的列表。

In addition, with the maturity of ADSL technology, direct use of PON as terminal access equipment in FTTH is not so popular as ASDL applications.

另外，随着ADSL技术的成熟，使FTTH中直接使用PON做为终端接入设备在应用上还远远不如adsl应用的普及。