i have never worked in a production enviroment i just wanted to know in WAN enviroment How are 2 sites are connected thru routers
Is there a CSU/DSU from a serial interface of router of 1 site connected to the other CSU/dsu of other router of 2nd site
i always practice wan technologies at home by using DTE/DCE back to back cable so i dont know in production enviroment how 2 routers are connected on diferent sites
please let me know i will really apreaciate that.
Hi, the wires from the csu/dsu go into the TDM network of the SP, that is quite complicated and varies from country to country. At some point the copper T1 is converted to fiber by something called a sonet/sdh adm.
You can research with google how these networks are made, there is much material on the internet, be biggest players are nortel, alcaltel, siemens, and even cisco, all the usual names.