Hello, I have two questions 1. I really don;t want to install Vocal (from vovida.org) or asterisk to use B2BUA (for prepaid users and "live"call management). So is there any contributed module for SER that I don;'t know about that is sane about all the sessoins and is not stateless? I was wondering also can SER send artificial BYE's to peers when he decides that the call should be ended but peers dont want to end the call. And of course SER would not let the RTP through himself because it's burdening his scalability (although being sane of sessions burdens it the same)... 2. I've got simple pstn model LAN ---> SER \ | \ | PSTN I get simple disconnetion and loose rtp stream when calling out to PSTN when making more than 5 calls. I don't actually know whether it's SER or my E1 Gateway problem. Logs from Linksys PAP2 tells me that it's the "RTP PORT DUPLICATE" . He's right because the sniffer tells the same . I see that two phones connect their RTP stream on port 3000. Any ideas ? Thanks in advance -- Pozdrawiam, Wojciech Ziniewicz Optocomp sp.z.o.o, www.optocomp.pl mailto: wojtekz(a)optocomp.pl +48(0)691031535