Hi all I am in this strange situation: we had ser configured to relay calls to numbers to asterisk extensions and all used to work nicely, with both ser and asterisk running on the same machine with public ip (ser on port 5060 and * on 5061). We had to move temporarily our server to another provider which put our server on a dmz, so that now we have our server with private ip but reachable from the outside via port forwarding on a public ip. Now every communication with asterisk is mute, calls are relayed by ser, connections estabilished, but no voice either with sip or with demo-echotest (* log says he is playing echotest but I can't hear anything!). I thought this was a dmz firewall + rtp problem but ports in rtp.conf are open with forwarding (udp). This is current network situation: myserver: private ip 10.0.0.229, ser running on port 5060, asterisk on 5061 (sip), rtp ports 5082-5092. Public ip 82.184.xx.xx with udp forwarding on above ports to myserver private ip Ser listens to private ip address and forwards to asterisk on private ip (can't forward to public address). bindaddress in sip.conf =private ip or 0.0.0.0 (mute in both cases), can't bind on public ip. Intresting part in sip.conf [general] port = 5061 ; Port to bind to ;bindaddr = 10.0.0.229 ; Address to bind SIP channel to bindaddr = 0.0.0.0 context = 82.184.xx.xx ; Default context for incoming calls srvlookup = no ; Enable DNS SRV lookups on outbound calls ;;;;;;; tried with or without following lines, still mute :-( autocreatepeer=yes externip=82.184.xx.xx register => asterisk:xxxxx@10.0.0.229/100 ;asterisk actually registers on ser! realm=82.184.xx.xx ;;;;;;; tried also with public ip host, nat=no, canreinvite=yes, type=peer [asterisk] type=friend secret=xxxxx username=asterisk host=10.0.0.229 nat=yes canreinvite=no ;dtmfmode=rfc2833 I hope someone can give me a hint to resolve this crappy situation thanks a lot -- Giovanni Balasso giaso apud supereva.it