Originally posted by arc:
I was looking over some pinout charts, and noticed that the RJ-48C seems to be the same as the RJ-48X jack except for the shorting bars. It says here that both of those jacks are for 1.544 Mbps data service. Where would you use the RJ-48C (without the shorting bars) instead of the RJ-48X (with the shorting bars)?
Is "1.544 Mbps data service" always a T1 or PRI line, or is there some other 1.544 Mbps data service out there? Use RJ48X if you can-- the reason is simple. Automatic loopback if you disconnect your side. Benefit: The local CO won't get a LOS/RED Alarm, and they won't OOS your circuit after a period of inactivity.
