[Serusers] SER and NAT and RTPproxy

Hi, Thank you to everyone who has replied to me to date. Unfortunately the problem is still there. Regarding Mr B's reply below. The BT100 client is behind NAT and I have rtp ports opened on my linksys router with port forwarding enabled. I have recaped the problem again below and would really appreciate any more thoughts or commenst to help resolve this problem as soon as possible...My demo this week will not go well if I cant figure this out!! Recap: Basically I think the problem comes down to nat. I still get the rtp errors mentioned in below emails in the var/log/messages file whether voice works or not(strangely enough)...but here are the scenarios that work and dont work: I have ser and asterisk on a private natted network. They are reached via a router which has a public address and does port forwarding. One my clients(a bt100 hardphone is also on this lan but registers with ser throught the public address anyway...so my understanding is that the bt100's sip register message goes out onto the internet and back in again. Now if the bt100 rings a client (e.g. xlite or windows messenger)or vice versa that are also on this lan...the call works and voice is transmitted (even though they again register through the public address by routing their sip messages onto the internet and back in again). However if the bt100 tries to ring a client not on the lan (on another network which may or may not be behind nat)...np voice is transmitted....Surely this is a nat problem even through the rtp errors are being displayed??.... If anybody has any idea how to fix this or if any more information is required in order to troubleshoot please let me know. Like I mentioned before this must be demoed next week...This natting scenarion worked when clients registered direct to asterisk so i presume its possible with ser. Thanks in advance, Aisling. From: "Mr B" <"cabalitomb atshaw.ca&quot;(a)fox.iptel.org&gt; Subject: RE: Re: [Serusers] SER and NAT and RTProxy To: serusers(a)iptel.org Message-ID: <0IB3004283LBCJ@l-daemon> Content-Type: text/plain; charset=us-ascii What I have found on the BT-100 (or any of the BT Series) is that the unit does not function very well behind any NAT without a RTP port open. Also you may want to check your router if you are using one. These are my findings of routers SMC - seems to work the best for VOIP Linksys - okay D-Link - very problematic - seems to always retain some old info Just my .000001% of a cent opinion Peter -----Original Message----- From: serusers-bounces(a)iptel.org [mailto:serusers-bounces@iptel.org] On Behalf Of Ashling O'Driscoll Sent: Saturday, January 29, 2005 8:56 AM To: serusers(a)iptel.org Subject: FW: Re: [Serusers] SER and NAT and RTProxy After doing a small bit of testing I have a bit more information which may help identify the problem....Basically I think the problem comes down to nat. I still get the rtp errors mentioned below in the var/log/messages file whether voice works or not(strangely enough)...but here are the scenarios that work and dont work: I have ser and asterisk on a private natted network. They are reached via a router which has a public address and does port forwarding. One my clients(a bt100 hardphone is also on this lan but registers with ser throught the public address anyway...so my understanding is that the bt100's sip register message goes out onto the internet and back in again. Now if the bt100 rings a client (e.g. xlite or windows messenger)or vice versa that are also on this lan...the call works and voice is transmitted (even though they again register through the public address by routing their sip messages onto the internet and back in again). However if the bt100 tries to ring a client not on the lan (on another network which may or may not be behind nat)...np voice is transmitted....Surely this is a nat problem even through the rtp errors are being displayed??.... If anybody has any idea how to fix this or if any more information is required in order to troubleshoot please let me know. Like I mentioned before this must be demoed next week...This natting scenarion worked when clients registered direct to asterisk so i presume its possible with ser. Thanks in advance, Aisling. ---- Original Message ---- From: ashling.odriscoll(a)cit.ie To: serusers(a)iptel.org Subject: FW: Re: [Serusers] SER and NAT and RTProxy Date: Sat, 29 Jan 2005 13:58:14 -0000 Unfortunately this still hasnt worked. I changed the modparam line in ser.cfg and ran rtpproxy again as follows: cd /root/Desktop/rtpproxy ./rtpproxy -s 127.0.0.1 Then I restarted SER. However now voice isnt being transmitted AT ALL...and i cant make it work even by running: cvs -d:pserver:anonymous@cvs.ser.berlios.de:/cvsrot/ser co rtpproxy Whats so weird is that I tested all this on wed evening and everything worked fine, now I repeatedly get the rtp errors documented in my first email on the /var/log/messages file. Does anyone have any more ideas...Im supposed to be demonstrating this sytem as prototype next week and it wont look very impressive if voice wont transmit.... Very stumped, Aisling. ---- Original Message ---- From: info(a)marikar.com To: serusers(a)iptel.org Subject: Re: [Serusers] SER and NAT and RTProxy Date: Sat, 29 Jan 2005 02:30:43 +0100 -------------------Legal Disclaimer--------------------------------------- The above electronic mail transmission is confidential and intended only for the person to whom it is addressed. Its contents may be protected by legal and/or professional privilege. Should it be received by you in error please contact the sender at the above quoted email address. Any unauthorised form of reproduction of this message is strictly prohibited. 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