[Serusers] asterisk or ser

Hello, I was playing with ser and asterisk for a few weeks but I couldn't make a decision what is better to use for medium voip network (more than 500 terminals in several locations, sepatate pstn gw, basic services - voice and voicebox). Asterisk looks like a very feature-rich voip application and ser more flexible. Can anyone share some experiences deploying either of the two voip systems? The maintenance effort is what weight more for us, we are looking for qualified support to install the platform once we are decided what to use. Many thanks in advance, TM PS. one can write me directly if the content of the mail is intended to be private. __________________________________ Do you Yahoo!? Make Yahoo! your home page http://www.yahoo.com/r/hs