On 16.05.2013, at 11:50, "Max Mühlbronner" <[email protected]> wrote:

> Hi,
> 
> 
> it´s very straightforward, just check sems.conf:
> 
> 
> additional_interfaces=intern, extern
> 

This is in the 1.4.x branch. Newer version are slightly different. There should 
be some explanations in the sample config file.

-Raphael.

> 
> sip_ip_intern=1.1.1.1
> sip_ip_extern=2.2.2.2
> 
> 
> 
> In your sbc profile, you can choose which interface will be used when sending 
> the call out: 
> 
> outbound_interface=extern
> 
> 
> 
> Best Regards
> 
> Max M.
> 
> On 05/16/2013 11:38 AM, Vassilis Radis wrote:
>> Sorry guys, I seem not to understand well:
>> 
>> How can I configure sems with both a private and a public ip? 
>> Can I set sip_ip option multiple times and ,consequently, is there an option 
>> in sbc app to declare which of the above ip's the B-leg calls should be 
>> outgoing to?
>> 
>> 
>> On Thu, May 16, 2013 at 12:35 PM, Emil Kroymann <[email protected]> 
>> wrote:
>>> Hi,
>>> 
>>> as Rafael pointed out, you can configure SEMS with both a private and a
>>> public IP. So if you're concerned with the processing power required in
>>> Kamailio, this would be the way to go. (Although I doubt that Kamailio
>>> would be your bottleneck).
>>> 
>>> Regards,
>>> Emil
>>> 
>>> Am Thu, 16 May 2013 12:26:14 +0300
>>> schrieb Vassilis Radis <[email protected]>:
>>> 
>>> > Hi emil,
>>> >
>>> > Thanks for the clarification.
>>> > Although it may be stupid I got to ask: This will double the traffic
>>> > and processing done by kamailio , just because SEMS can't be
>>> > configured with separate/independent UAS / UAC sockets? I dont mean
>>> > to be provocative, I am just thinking loudly. It is an SBC. I would
>>> > expect a totally separate "leg" in each side of the "border"...
>>> > Anyway thanks, I guess I ll drop the private listening address and
>>> > make it listen on the public interface.
>>> >
>>> > Bill.
>>> >
>>> >
>>> > On Thu, May 16, 2013 at 12:04 PM, Emil Kroymann
>>> > <[email protected]>wrote:
>>> >
>>> > > Re-Hi,
>>> > >
>>> > > Am Thu, 16 May 2013 10:58:19 +0200
>>> > > schrieb Emil Kroymann <[email protected]>:
>>> > >
>>> > > > Hi,
>>> > > >
>>> > > > The Invalid Argument error usually results when trying to send to
>>> > > > a non local address from a socket that is listening on 127.0.0.1.
>>> > >
>>> > > To expand a bit: SEMS does symmetric SIP. That is, it uses the same
>>> > > port (and hence socket) for receiving SIP messages and for sending
>>> > > SIP messages. I think, what you should do, is have SEMS route
>>> > > outgoing SIP messages back to your kamailio instance which can then
>>> > > forward them to the right destination.
>>> > >
>>> > > Regards,
>>> > > Emil
>>> > >
>>> > > >
>>> > > > Regards,
>>> > > > Emil
>>> > > >
>>> > > > Am Wed, 15 May 2013 18:53:08 +0300
>>> > > > schrieb Vassilis Radis <[email protected]>:
>>> > > >
>>> > > > > Hello , I ve setup my sems on the same box with a kamailio.
>>> > > > >
>>> > > > > Kamailio is bound to the public IP and SEMS to 127.0.0.1
>>> > > > > I am only using SBC profile. In sems.conf I have
>>> > > > >
>>> > > > > sip_ip: 127.0.0.1:5757
>>> > > > > media_ip: <public_ip_of_the_box>
>>> > > > >
>>> > > > > and next_hops and outbound_proxy are not set.
>>> > > > >
>>> > > > > A call comes from outside into kamailio which sends it to sems
>>> > > > > for SBCing. Sems decides the next hop by looking into
>>> > > > > application parameter headers that are set by kamailio.
>>> > > > > Communication between kamailio and sems is fine. The problem is
>>> > > > > that SEMS cannot send its initial INVITE to outside world: In
>>> > > > > the debug messages it reports that it checks the DNS of the
>>> > > > > next_hop, it calls send_to and then send_to function returns
>>> > > > > "Invalid argument" which causes SEMS to report a 400 Bad
>>> > > > > request back to Kamailio:
>>> > > > >
>>> > > > > May 15 18:45:27 sip2 sems[26168]: [#b5dffb40] [send_request,
>>> > > > > trans_layer.cpp:980] DEBUG: Sending to x.x.x.x:5060 <INVITE
>>> > > > > sip:[email protected]:...>
>>> > > > > May 15 18:45:27 sip2 sems[26168]: [#b5dffb40] [send,
>>> > > > > transport.cpp:109] DEBUG: send  msg
>>> > > > > May 15 18:45:27 sip2 sems[26168]: [#b5dffb40] [send,
>>> > > > > transport.cpp:125] ERROR: sendto: Invalid argument
>>> > > > > May 15 18:45:27 sip2 sems[26168]: [#b5dffb40] [send_request,
>>> > > > > trans_layer.cpp:988] ERROR: Error from transport layer
>>> > > > > May 15 18:45:27 sip2 sems[26168]: [#b5dffb40] [sendRequest,
>>> > > > > AmSipDialog.cpp:1135] ERROR: Could not send request:
>>> > > > > method=INVITE; call-id=2CCEB7CF-5193AD9700045DF0-B5CFEB40;
>>> > > > > cseq=10 May 15 18:45:27 sip2 sems[26168]: [#b5dffb40]
>>> > > > > [onB2BEvent, AmB2BSession.cpp:1254] DEBUG: sending INVITE
>>> > > > > failed, relaying back error reply
>>> > > > > May 15 18:45:27 sip2 sems[26168]: [#b5dffb40] [onB2BEvent,
>>> > > > > AmB2BSession.cpp:1259] DEBUG: relaying B2B SIP reply 400 Bad
>>> > > > > Request
>>> > > > >
>>> > > > > Any ideas?
>>> > > > >
>>> > > > > Thanks a lot,
>>> > > > > Bill
>>> > > >
>>> > > >
>>> > > >
>>> > >
>>> > >
>>> > >
>>> > > --
>>> > > Emil Kroymann
>>> > > VoIP Services Engineer
>>> > >
>>> > > Email: [email protected]
>>> > > Tel: +49-30-203899885
>>> > > Mobile: +49-151-62820588
>>> > >
>>> > > ISACO GmbH
>>> > > Kurfürstenstraße 79
>>> > > 10787 Berlin
>>> > > Germany
>>> > >
>>> > > Amtsgericht Charlottenburg, HRB 112464B
>>> > > Geschäftsführer: Daniel Frommherz
>>> > >
>>> > >
>>> 
>>> 
>>> 
>>> --
>>> Emil Kroymann
>>> VoIP Services Engineer
>>> 
>>> Email: [email protected]
>>> Tel: +49-30-203899885
>>> Mobile: +49-151-62820588
>>> 
>>> ISACO GmbH
>>> Kurfürstenstraße 79
>>> 10787 Berlin
>>> Germany
>>> 
>>> Amtsgericht Charlottenburg, HRB 112464B
>>> Geschäftsführer: Daniel Frommherz
>> 
>> 
>> 
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> 
> 
> -- 
> Max Mühlbronner
> 
> 42com Telecommunication GmbH
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> 
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