What is STM4?

What is STM4?

STM4 is a molecular visualization toolkit built on top of AVS/Express . Its goal is not to replace existing tools, but to provide a platform on which new, advanced or unusual visualization techniques can be implemented.

What is the transport rate of an STM-4 signal?

The basic STM-1 transport rate is 155.520 Mbit/s and is defined in the ITU-T recommendation G.707. As mentioned above, the overhead of an STM-4 signal (SOH) is divided into two parts: the MSOH and the RSOH.

What is the difference between STM-4 and OC-12?

Although STM-4 is comparable to OC-12 the SDH frame structure allocates more space to overhead than that of SONET. Because of this, STM-4’s payload bandwidth differs from that of OC-12. SDH is a transport hierarchy based on multiples of 155.52 Mbit/s. The basic unit of SDH is STM-1 . Different SDH rates are given below:

How many bytes are in a STM-4 frame?

An STM-4 frame consists of 36 rows each containing 270 bytes. This is a direct multiple of STM-1, which consists of 9 rows each containing 270 bytes. The frame frequency of 32 kHz has also been chosen as a 4x multiple of that of STM-1, so that one byte of frame corresponds to the transmission capacity of a 64 kbit/s channel.