Hi Guys!

I just would like to share that I was able to get a working setup using SER as Softswitch, Asterisk as PSTN gateway and SIPROXD on my NAT Router. SIPROXD is an open source ALG and it effectively handles sip nat traversals. With it I dont have to run a seperate mediaproxy. When making calls from SIP UA to PSTN, RTP is as below:

UA---NAT/SIPROXD---ASTERISK

for 2 UA behind the same NAT:

UA1--NAT---UA2

and for 2 UA behind different NATs:

UA1--NAT1----NAT2---UA2

Thus there is less latency on signals and less traffic on SER. My question is, from the experience of other guys here, what do you think is the drawback or advantages of using SIPROXD together with SER to solve SIP NAT issues compared to other methods like using mediaproxy and rtpproxy?Will I still be able to do other SER features like accounting?

Thanks!
_jeff