Question

PDH has bandwidth restriction of 140 MBPS due to​

Answer 1

Explanation:

This tutorial discusses synchronous transmission standards in world public

telecommunications networks. It will cover their origins, features, applications,

and advantages, as well as their impact on network design and synchronous

signal structure.

This tutorial concentrates on the most common form of SDH, that defined by the

European Telecommunications Standards Institute (ETSI) for Europe but now

used everywhere outside of North America and Japan. The Japanese version of

SDH differs only in details that are touched on here but are not significant for the

purposes of this tutorial. SONET was defined by the American National

Standards Institution (ANSI) and is used in North America. This tutorial refers to

SONET where appropriate; a more detailed discussion is available in the

International Engineering Consortium’s (IEC's) SONET Web ProForum tutorial.