routing This is very similar to how we do things at our company. We use Asterisk as our IAX/PRI/misc media proxy, and SER does all of our LCR/CDR's. What I was getting at is, is SER a centralized server ie housing many servers? Or is this a per server basis, such as this: Server1 <Asterisk/SER> Server2 <Asterisk/SER> If it's a scenario where your LCR is not centralized then it's almost unneeded. In our situation, we dedicate servers to a single function, for scalability and also to get by this problem that you're seeing. I'm not bad mouthing Asterisk, we love it for a media gateway and as a PBX, for that it's priceless. For call routing though, etc yes it's a baby. Matt -----Original Message----- From: Alexander Hoffmann [mailto:alexander.hoffmann@netgenius.de] Hi, The reason why I need both is: 1) I want to use SER as the only point where to implement all call routing logic 2) I need a gateway that supports ISDN NT-mode Because of 2 I am using Asterisk, do you know something better ? Regards, Alex