SDH vs OTN vs MSTP

MSTP (SDH-based multi-service transport platform) refers to the
multi-service node that provides unified network management for access,
processing, and transmission of services such as TDM, ATM, and Ethernet
based on the SDH platform.

The majority of SONET/SDH equipment is reaching its planned end of life. Optical Transport Network
(OTN) technology represents both a technical leap forward in optical
networking over SONET/SDH and a business opportunity for carriers and
service providers alike.

Dear,


SDH:

The SDH outgoing line is basically determined by the branch circuit model, generally 8E1, 16E1, 32E1, etc. It is composed of branch circuit boards, main control boards, etc. AC power is rarely used.

MSTP:

MSTP (Multi-service Transport Platform) is a multi-service transport platform. It is a metro transmission network technology. It integrates SDH transmission technology, Ethernet, ATM, POS and other technologies. Based on SDH technology, A variety of services are aggregated and effectively adapted to achieve comprehensive access and transmission of multiple services, and to achieve SDH from a pure transport network to a multi-service platform that integrates transport and service networks. Since then, the STP-based MSTP technology has played a very important role in the field of metropolitan area network applications.

OTN:

SDH + WDM = OTN
OTN is based on WDM and combines some advantages of SDH, such as rich OAM overhead, flexible service scheduling, and perfect protection methods.