hi mukul,
you know that in fxc rr1 unit the max. e1 depends upon the rf plan for that site. it mains if the plan is 16 e1 the number of links will depend upon the fxc rri but sometimes 16 channel cant be use, they are allocating only perhaps 13 channel for the other link.
2. the rsl and dc reading is synchronized for both of them.
the rsl is in dbm while in voltmeter is volts, it means the ratio will determine if what label you have for example -41dBm=3.++ something ok