I'd like your input on suggestions for an alternate serial port manager.

Long ago I used Cisco 2511/2611 and was fairly happy.  A little later I used portmaster and was less so.  Recently I've been using Opengear and they work fairly well but the price is fairly high.   I use the CM7100 and IM7100.

General specs I'm looking for are:

 * 8 to 48 or more rs232 serial ports on rj45

 * nice-to-have software selectable pinouts (cisco v. straight)

 * gig-e ethernet port (100mbps ok)

 * 1U form factor

 * redundant AC power

 * access physical serial connections via local port #

 * access physical serial connections via local IP alias (nice to have)

Can you recommend a serial port server/concentrator that I could use in place of opengear for a better value and/or lower cost?

I'm just ignorant about the current market for serial port concentrators and so far web searches have not revealed ideas, so your input is appreciated!

Thanks!

-alan