5 in 1 means that the port supports 5 phisycal standards, RS-232/V.35/X.21/RS-449/RS-530, on the port. Which standard the port functions in depends on the cable that is plugged into de port. This is 5 in 1.
Yes, you can connect to another 2501 using a pair of cables DTE/DCE.
We are pleased to announce availability of Beta software for 16.6.3. 16.6.3 will be the second rebuild on the 16.6 release train targeted towards Catalyst 9500/9400/9300/3850/3650 switching platforms. We are looking for early feedback from custome...