neax61E switching system

does anyone can explain neax61E switching compenent , it function and how their interconnection?

 

[melone]

What is it?

 

[shockfader]

Mr. Switch, the NEAX61E is a very old switching system developed by NEC Japan. But old it might be, it still is used in many 3rd world countries.
Explaining its operation will require volumes of reading material, as several types of processors combine to complete its operation as a system.

By the way, how did you come across the NEAX?