[OpenSIPS-Users] Openser running between 2 networks

Bogdan-Andrei Iancu bogdan at voice-system.ro
Fri Oct 10 08:44:41 CEST 2008


Hi Robert,

What you are saying is you are using only the public interface as this 
routable and reachable from the private network also. Is this correct?

Regards,
Bogdan

Robert Dyck wrote:
> I also use openser as an outgoing proxy. At first I had the proxy listening on 
> both interfaces and used rtpproxy in bridge mode. I decided that was not 
> necessary. Now on the local phones I use the proxy's public address as the 
> outgoing proxy address. I no longer use rtpproxy in bridge mode. Both the 
> local phones and external phones can connect with the rtpproxy public 
> address.
>
> On Thursday 09 October 2008, Bogdan-Andrei Iancu wrote:
>   
>> Hi,
>>
>> Another option is to use force_send_socket() core function
>> (http://www.opensips.org/pmwiki.php?n=Resources.DocsCoreFcn#toc95).
>>
>> If you receive the message on the private IP and want to send it out on
>> the public one, do force_send_socket(public_IP); before t_relay().
>>
>> Regards,
>> Bogdan
>>
>> Hung Nguyen wrote:
>>     
>>> Hi Bruno Machodo
>>>
>>> 1. With openser, you must add line mhomed = 1 to openser.cfg ==> it
>>> will run on bridge mode
>>> 2. With rtpproxy you must add flag "EI" ==> for calls from public
>>> network to private network and "IE" with calls from private network to
>>> public network.
>>> force_rtp_proxy("EI");
>>>
>>> nguyen,
>>>
>>> On 9/24/08, Bruno Machado <bsmufu at yahoo.com.br> wrote:
>>>       
>>>> Hi fellows.
>>>>
>>>> I've been looking for a solution to solve this problem. The Openser is
>>>> running
>>>> over 2 IPs: private and public. I also have 2 ATAs: one of them has a
>>>> private IP
>>>> and the second has a public. When the session is established, ATA A will
>>>> send
>>>> RTP to the Openser private interface and ATA B will send to its public
>>>> IP. RTPProxy will
>>>> route the "private RTP packets" to "public network" and vice-versa
>>>>
>>>> private                                       public
>>>> ATA A                Openser                ATA B
>>>> ------- INVITE -------> private IP
>>>>                      public IP  ------- INVITE ----->
>>>>
>>>>
>>>> I've implemented a script but it doesn't work like the way described
>>>> above. When Openser receives the INVITE through its private IP, it
>>>> forwards the message to ATA B using the its private IP.
>>>> I saw that RTPProxy has a bridge mode and the Nathelper's function has
>>>> some parameters to handle with it. The SDP's 'c header' is changed
>>>> properly when
>>>> I use them, but the source IP (when Openser sends it to the public ATA)
>>>> remains private (I'm not thinking that 'force_rtp_proxy' will set the
>>>> network layer). In one hand, I already
>>>> have the SDP set properly; but the source address still belonging to the
>>>> private
>>>> network. So, I just have 50% done. I tried to add an argument in
>>>> "t_relay", like "udp:XXX.YYY.WWW.ZZZ:5060", without success.
>>>> I don't know if what I want is possible: this behavior belongs to a "IP
>>>> router", interconnecting 2 different networks. I didn't find anything
>>>> similar to this (maybe I didn't search enough (and I believe that it is
>>>> the only clever thing here until now...)).
>>>> So... Am I getting crazy or it is clearly possible? (perhaps both..)
>>>>
>>>> Regards
>>>> Bruno Machado
>>>>
>>>>
>>>>
>>>>       Novos endereços, o Yahoo! que você conhece. Crie um email novo com
>>>> a sua cara @ymail.com ou @rocketmail.com.
>>>> http://br.new.mail.yahoo.com/addresses
>>>>         
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>
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