We are looking for a 48 port PoE switch. My budget is around $1200. Is there any switch that is reliable for that price range?
I have used the Netgear GS748TP at several sites for VoIP implementations and have had good results with them:
You have to deal with the web interface to configure it. It is a little clunky. If you can get past it, they are a really decent switch for the price.
The bad thing is they are about $1,350 right now. Though if you search hard enough, you can find one for about $1,230.
I have a bunch of HP E2610-48 switches I'm happy with. They're providing POE on all ports and have a lifetime warranty.
Take a look at D-Link switches. We're using the DES-3028P (24 10/100 PoE + 4 GigE) for our VoIP deployments. Cost is about $500/switch for us. These are also "fully managed" (telnet/SSH/SNMP/etc) switches.
I believe they also have a 48 port version of the switch, but I can't recall the model number off the top of my head.
BTW, it may not matter, but take a look at the PoE output for any switch you get. Some can't power all ports at 15W (or even a fraction of that). That was one reason we chose the DES-3028P (it does full 15W/port).