[Serusers] Mediaproxy, problems in PSTN-to-SIP

Hi there, I have the following: SER: version: ser 0.9.0 (i386/linux) flags: STATS: Off, USE_IPV6, USE_TCP, DISABLE_NAGLE, USE_MCAST, DNS_IP_HACK, SHM_MEM, SHM_MMAP, PKG_MALLOC, DBG_QM_MALLOC, FAST_LOCK-ADAPTIVE_WAIT ADAPTIVE_WAIT_LOOPS=1024, MAX_RECV_BUFFER_SIZE 262144, MAX_LISTEN 16, MAX_URI_SIZE 1024, BUF_SIZE 65535 @(#) $Id: main.c,v 1.197 2004/12/03 19:09:31 andrei Exp $ main.c compiled on 16:46:51 Mar 29 2005 with gcc 2.96 CISCO GATEWAY: IOS (tm) 5300 Software (C5300-IS-M), Version 12.2(26), RELEASE SOFTWARE (fc2) The situation is the following: If I have to UAs, both behind same (linux-iptables) nat, I have a two-way audio communication, with nice quality, with no problems at all. If I place a call to the PSTN, trough my Gateway, from my UA, I have a two-way audio communication, with nice quality, with no problems at all. If I try to receive a call from the PSTN, trough my Gateway, I only have a one-way audio communication, but only in the SIP->PSTN direction. What could this be?. I can send my ser.cfg and some dumps from communications, but I believe the problem is quite clear. In fact, I followed the instructions from onsip.org. - some ngrep's ... U ip_ua:5070 -> ip_ser_mediaproxy:5060 SIP/2.0 200 OK..Via: SIP/2.0/UDP ip_ser_mediaproxy;branch=z9hG4 U ip_ser_mediaproxy:5060 -> snom_proxy:5060 SIP/2.0 200 OK..Via: SIP/2.0/UDP snom_proxy:5060;branch=z9 U snom_proxy:5060 -> ip_ser_mediaproxy:5060 ACK sip:ip_ser_mediaproxy:5060 SIP/2.0..v: SIP/2.0/UDP 38.117.2 U ip_ser_mediaproxy:5060 -> ip_ua:5070 ACK sip:1991015@ip_ua:5070 SIP/2.0..Record-Route: < The ACK arrives nicely to my UA (ip_ua:5070), but it keeps sending RTP to my GATEWAY's IP and port. - tcpdumping RTP on the UA (private IP:192.168.1.185.15090)(behind NAT) 20:36:37.596851 192.168.1.185.15090 > IP_CISCO.20482: udp 32 - show call active voice brief at my cisco: 2D2B : 104269100hs.1 +273 pid:1991334 Originate 1991015 active dur 00:00:36 tx:162/3202 rx:1790/35800 IP ip_ser_mediaproxy:35234 rtt:0ms pl:33170/140ms lost:0/0/0 delay:69/69/70ms g729r8 - session.py (from media proxy) (look at the ports, its fine and logic according to the tcpdumping of RTP at my LAN). Caller Via Called Status Duration Codec Type Traffic ------------------------------------------------------------------------ --------------------------- IP_CISCO:20482 - ip_ser_mediaproxy:35234 - ?.?.?.?:? inactive 1'04" G729 Audio 11.29k/0/0 I would appreciate some help ( or even IDEAS ) Best regards, Lucas -- No virus found in this outgoing message. Checked by AVG Anti-Virus. Version: 7.0.308 / Virus Database: 266.8.4 - Release Date: 27/03/2005