I am trying to simulate a T1 link (not using DCE/DTE cable), by using a T1 CSU/DSU WIC on one router and on another router I am using an external third party CSU/DSU (Verilink). To simulate the service provider network, I connect the RJ45 cable between the two CSU network connection as follows
The line comes up, but the protocol doesn't??
Encapsulation on both serial port = hdlc
bandwith on both = 1544
WIC-T1 is line time, full rate T1, ESF/B8ZS
External CSU is internal timed, ful rate t1, ESF/B8ZS