I think maybe you are confusing remote user nat traversal, which implies
remote nat traversal, with trunking and nat traversal, which are 2 different
things.

Remote users can do NAT traversal with media relay and a properly configured
firewall while you do PSTN connectivity with a local unmanaged gateway,
without siptrunking role enabled via sipxbridge.

2011/1/12 Irena Dolovčak <irena.dolov...@gmail.com>

> They support refer
>
>
>
> They do not handle remote NAT traversal. We already talked about that with
> them.
>
> The basic concept of this type of trunking has no NAT whatsoever. The
> second address from the subnet they give us is meant to go directly to the
> client SIP server (as the local IP server address)
>
>
> 2011/1/12 Tony Graziano <tgrazi...@myitdepartment.net>
>
> 2011/1/12 Irena Dolovčak <irena.dolov...@gmail.com>
>>
>>> @Michael
>>>
>>> No, they do not sell any equipment. It is actually a very good SIP
>>> trunking method. They provide SIP trunks over MPLS over dedicated fiber
>>> connections, there is no internet anywhere in the story. This has the
>>> highest possible quality and reliability...
>>>
>>>
>>>
>>> This is the preferred method of all the large telecom operators in our
>>> region.
>>>
>>> And it works great with 99% of other SIP software and hardware solutions.
>>>
>>>
>>>
>>>
>>> To work as envisioned, in the software solutions, SIP server should have
>>> a dedicated NIC just for this SIP trunk. This problem we have now is in
>>> essence a shortcoming of sipx. SipX should support multiple NIC-s/IP-s,
>>> otherwise this brings all kind of limitations in complex (especially multi
>>> site) installations. We also implement other software SIP solutions which
>>> support multiple NIC-s (3CX, Lync), we have no problem with them and this
>>> type of SIP trunking.
>>>
>>>
>>>
>>> @Tony
>>>
>>> The following is the concept of this SIP trunk (from this provider and
>>> others telecoms in our region):
>>>
>>>
>>>
>>>    1. SIP trunk is delivered over private IP network, over dedicated
>>>    physical connection
>>>    2. The provider gives us the following:
>>>
>>> -          IP address of their SIP server (10.160.4.157)
>>>
>>> -          A limited subnet (10.160.250.92/30) of two IP addresses
>>> (10.160.250.93 and 10.160.250.94)
>>>
>>>    1. The first IP address in the given subnet (10.160.250.93) is their
>>>    CPE router. The other address (10.160.250.94) is meant to be installed 
>>> as a
>>>    local IP address of our SIP server
>>>
>>>
>>>
>>> Our current setup is this:
>>>
>>> -          The second address in the given subnet (10.160.250.94) is set
>>> on our router as external private IP address
>>>
>>> -          our router has also an internet access and therefore has a
>>> separate external public IP address.
>>>
>>> -          The internal address of our router is set to (10.4.62.1)
>>>
>>> -          Sipx has a local address (10.4.62.2). enable NAT traversal
>>> and server is behind NAT is enabled. There are also remote works
>>>
>>> -          Beside the main SIP provider we also need to connect a
>>> secondary international SIP provider over the internet for LCR (this work
>>> fine with sipx bridge)
>>>
>>>
>>>
>>> Now to answer Your questions:
>>>
>>>    1. No, we don't have any routing protocol to the provider, and they
>>>    do not accept our private IP addresses.
>>>    2. If we give sipx the wrong public IP address (10.160.250.94) than
>>>    we can also establish SIP trunk via unmanaged gateway. But with a 
>>> problem:
>>>    Outbound is ok (SIP and RTP) but incoming calls don't work (neither SIP 
>>> nor
>>>    RTP, there is a SIP loop)
>>>
>>> Does the providers equipment support refer?
>> If so, set them up as an unmanaged gateway, and let them handle the nat
>> traversal on their network, because by implicitly placing themselves on a
>> private network local to you it assumes they will do NAT.
>>
>> This means you disable siptrunking role, setup unmanaged gateway to itsp,
>> add the IP subnets of their private network in your intranet subnets,
>>
>>>
>>>
>>>
>>>
>>> So...
>>>
>>> Currently we have established both SIP trunks via sipx bridge, but with a
>>> wrong public IP address (10.160.250.94). With some creative routing
>>> everything works (even remote workers), but everything is fundamentally
>>> setuped wrong and there could be yet undetected problems...
>>>
>>>
>>>
>>> How do propose we setup this trunk with SipX (without buying an external
>>> SBC)?
>>>
>>>
>>>
>>>
>>> 2011/1/9 Tony Graziano <tgrazi...@myitdepartment.net>
>>>
>>> I don't think this is possible within sipxbridge. It sounds like they are
>>>> sitting on a non-routed network that you have local access to, in which 
>>>> case
>>>> this is plain routing and could be connected to with an unmanaged gateway
>>>> (since it does not use authentication).
>>>>
>>>> Can you route to the network the ITSP gateway is on from sipx without
>>>> nat? If so, did you add it as a intranet subnet? Have you tried it as an
>>>> unmanaged gateway? If the provider supports REFER, it should be as simple 
>>>> as
>>>> adding an unmanaged gateway, which means sipxbridge role can be deselected
>>>> altogether. This means you can still run remote users through media relay,
>>>> if it is needed to support them.
>>>>
>>>> What you are asking for is two different IP's for sipx (one for users
>>>> and one for trunking) to the outside world. You can only do this with an
>>>> independent SBC that can manipulate the headers to pass on the IP's the 
>>>> ITSP
>>>> wants. sipXbridge was not designed for this type of deployment in its
>>>> current form.
>>>>
>>>> Hope this makes sense.
>>>>
>>>> 2011/1/9 Irena Dolovčak <irena.dolov...@gmail.com>
>>>>
>>>> I am referring to the <global-address> and <external address> from
>>>>> <bridge-configuration> located in
>>>>> the sipx bridge configuration file (sipxbridge.xml)
>>>>>
>>>>> Without getting too deep into the reasons and problems; I need to have
>>>>> two different public IP
>>>>> addresses in this particular sipx deployment.
>>>>> One standard public IP for sipx in general and a different one just for
>>>>> one of the sipx bridges.
>>>>>
>>>>> The reason for this is that the main voice provider for this customer
>>>>> is deploying SIP trunks over
>>>>> physical private network without authentication and they demand that
>>>>> the sipx has a private IP
>>>>> address in a particular given subnet and the invites from field must
>>>>> contain this address in order for
>>>>> SIP trunk to work. The only way I can get this SIP trunk to work is if
>>>>> I setup this private IP address
>>>>> instead of the sipx public IP address. But this messes up a bunch of
>>>>> other things (which I can get
>>>>> around with complicated routing, but I would rather not..)
>>>>>
>>>>> So I plan to change the public IP address just for one of the sipx
>>>>> bridges (there are two sipx bridges
>>>>> with multiple SIP trunks from multiple providers). I intend to do this
>>>>> manually through changing the
>>>>> sipxbridge.xml configuration file.
>>>>>
>>>>> For this reason I ask what is the <global-address> for and what is the
>>>>> <external address> for in the
>>>>> sipx bridge configuration file?
>>>>>
>>>>>
>>>>>
>>>>> 2011/1/8 Tony Graziano <tgrazi...@myitdepartment.net>
>>>>>
>>>>> I don't follow the terminology you are using.
>>>>>>
>>>>>> Public address is used in two places. Once by sipxbridge and once by
>>>>>> media relay (for remote users).
>>>>>>
>>>>>> When used by sipxbridge it is used for setting up calls to the ITSP so
>>>>>> the ITSP knows it is coming from the "internet facing address" of sipx. 
>>>>>> This
>>>>>> means the ITSP is contacting (usually, your firrewall) the system 
>>>>>> directly
>>>>>> to send packets and is not handling nat traversal for you.
>>>>>>
>>>>>> When used by media relay, it is so media relay knows when destination
>>>>>> pacckets arrive at it for invites TO sipx or REGISTER on port 5060, that
>>>>>> they originated via that IP address, which helps the system construct 
>>>>>> your
>>>>>> registration and calls.
>>>>>>
>>>>>> Please explain in better detail what you mean by
>>>>>>
>>>>>> external-address and global-address? where are you picking up those
>>>>>> terms so your question can be answered.
>>>>>>
>>>>>> sipxbridge only has one address, the public facing one, since it only
>>>>>> really communicates publicly, everything else it does is inside sipx...
>>>>>>
>>>>>> 2011/1/8 Irena Dolovčak <irena.dolov...@gmail.com>
>>>>>>
>>>>>> oh yes, my bad..
>>>>>>>
>>>>>>> I just wanted to know what is the difference between external-address
>>>>>>> and global-address in sipxbridge..?
>>>>>>>
>>>>>>>
>>>>>>> On Sat, Jan 8, 2011 at 1:53 PM, Tony Graziano <
>>>>>>> tgrazi...@myitdepartment.net> wrote:
>>>>>>>
>>>>>>>> sipxbridge is not used for remote workers.
>>>>>>>>
>>>>>>>> sipxbridge is for trunking
>>>>>>>> media relay is for remote workers
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>> On Sat, Jan 8, 2011 at 7:49 AM, Irena Dolovčak <
>>>>>>>> irena.dolov...@gmail.com> wrote:
>>>>>>>>
>>>>>>>>> Tony thanks for your reply..
>>>>>>>>> And the global-address is used for remote workers, right?
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> On Sat, Jan 8, 2011 at 1:40 PM, Tony Graziano <
>>>>>>>>> tgrazi...@myitdepartment.net> wrote:
>>>>>>>>>
>>>>>>>>>> Public address? It is the contact ip the itsp uses to connect to
>>>>>>>>>> sipxbridge. This is the most common configuration becase a lot of 
>>>>>>>>>> itsp's do
>>>>>>>>>> not handle nat traversal on sip trunks for you.
>>>>>>>>>>
>>>>>>>>>> On Sat, Jan 8, 2011 at 7:24 AM, Irena Dolovčak <
>>>>>>>>>> irena.dolov...@gmail.com> wrote:
>>>>>>>>>>
>>>>>>>>>>>  Hi to all!
>>>>>>>>>>>
>>>>>>>>>>> I have just one quick question.. In the configuration of
>>>>>>>>>>> sipxbridge what is the "external-address" used for?
>>>>>>>>>>>
>>>>>>>>>>> Thanks
>>>>>>>>>>>
>>>>>>>>>>> --
>>>>>>>>>>> Irena Dolovčak
>>>>>>>>>>>
>>>>>>>>>>> _______________________________________________
>>>>>>>>>>> sipx-users mailing list
>>>>>>>>>>> sipx-users@list.sipfoundry.org
>>>>>>>>>>> List Archive: http://list.sipfoundry.org/archive/sipx-users/
>>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> _______________________________________________
>>>>>>>>>> sipx-users mailing list
>>>>>>>>>> sipx-users@list.sipfoundry.org
>>>>>>>>>> List Archive: http://list.sipfoundry.org/archive/sipx-users/
>>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> --
>>>>>>>>> Irena Dolovčak
>>>>>>>>>
>>>>>>>>> _______________________________________________
>>>>>>>>> sipx-users mailing list
>>>>>>>>> sipx-users@list.sipfoundry.org
>>>>>>>>> List Archive: http://list.sipfoundry.org/archive/sipx-users/
>>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>> --
>>>>>>>> ======================
>>>>>>>> Tony Graziano, Manager
>>>>>>>> Telephone: 434.984.8430
>>>>>>>> sip: tgrazi...@voice.myitdepartment.net
>>>>>>>> Fax: 434.326.5325
>>>>>>>>
>>>>>>>> Email: tgrazi...@myitdepartment.net
>>>>>>>>
>>>>>>>> LAN/Telephony/Security and Control Systems Helpdesk:
>>>>>>>> Telephone: 434.984.8426
>>>>>>>> sip: helpd...@voice.myitdepartment.net
>>>>>>>>
>>>>>>>> Helpdesk Contract Customers:
>>>>>>>> http://support.myitdepartment.net
>>>>>>>>
>>>>>>>> <http://support.myitdepartment.net>Blog:
>>>>>>>> http://blog.myitdepartment.net
>>>>>>>>
>>>>>>>> Linked-In Profile:
>>>>>>>> http://www.linkedin.com/pub/tony-graziano/14/4a6/7a4
>>>>>>>>
>>>>>>>>
>>>>>>>> _______________________________________________
>>>>>>>> sipx-users mailing list
>>>>>>>> sipx-users@list.sipfoundry.org
>>>>>>>> List Archive: http://list.sipfoundry.org/archive/sipx-users/
>>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> --
>>>>>>> Irena Dolovčak
>>>>>>>
>>>>>>> _______________________________________________
>>>>>>> sipx-users mailing list
>>>>>>> sipx-users@list.sipfoundry.org
>>>>>>> List Archive: http://list.sipfoundry.org/archive/sipx-users/
>>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>> --
>>>>>> ======================
>>>>>> Tony Graziano, Manager
>>>>>> Telephone: 434.984.8430
>>>>>> sip: tgrazi...@voice.myitdepartment.net
>>>>>> Fax: 434.326.5325
>>>>>>
>>>>>> Email: tgrazi...@myitdepartment.net
>>>>>>
>>>>>> LAN/Telephony/Security and Control Systems Helpdesk:
>>>>>> Telephone: 434.984.8426
>>>>>> sip: helpd...@voice.myitdepartment.net
>>>>>>
>>>>>> Helpdesk Contract Customers:
>>>>>> http://support.myitdepartment.net
>>>>>>
>>>>>> <http://support.myitdepartment.net>Blog:
>>>>>> http://blog.myitdepartment.net
>>>>>>
>>>>>> Linked-In Profile:
>>>>>> http://www.linkedin.com/pub/tony-graziano/14/4a6/7a4
>>>>>>
>>>>>>
>>>>>> _______________________________________________
>>>>>> sipx-users mailing list
>>>>>> sipx-users@list.sipfoundry.org
>>>>>> List Archive: http://list.sipfoundry.org/archive/sipx-users/
>>>>>>
>>>>>
>>>>>
>>>>>
>>>>> --
>>>>> Irena Dolovčak
>>>>>
>>>>> _______________________________________________
>>>>> sipx-users mailing list
>>>>> sipx-users@list.sipfoundry.org
>>>>> List Archive: http://list.sipfoundry.org/archive/sipx-users/
>>>>>
>>>>
>>>>
>>>>
>>>> --
>>>> ======================
>>>> Tony Graziano, Manager
>>>> Telephone: 434.984.8430
>>>> sip: tgrazi...@voice.myitdepartment.net
>>>> Fax: 434.326.5325
>>>>
>>>> Email: tgrazi...@myitdepartment.net
>>>>
>>>> LAN/Telephony/Security and Control Systems Helpdesk:
>>>> Telephone: 434.984.8426
>>>> sip: helpd...@voice.myitdepartment.net
>>>>
>>>> Helpdesk Contract Customers:
>>>> http://support.myitdepartment.net
>>>>
>>>> <http://support.myitdepartment.net>Blog:
>>>> http://blog.myitdepartment.net
>>>>
>>>> Linked-In Profile: http://www.linkedin.com/pub/tony-graziano/14/4a6/7a4
>>>>
>>>>
>>>> _______________________________________________
>>>> sipx-users mailing list
>>>> sipx-users@list.sipfoundry.org
>>>> List Archive: http://list.sipfoundry.org/archive/sipx-users/
>>>>
>>>
>>>
>>>
>>> --
>>> Irena Dolovčak
>>>
>>> _______________________________________________
>>> sipx-users mailing list
>>> sipx-users@list.sipfoundry.org
>>> List Archive: http://list.sipfoundry.org/archive/sipx-users/
>>>
>>
>>
>>
>> --
>> ======================
>> Tony Graziano, Manager
>> Telephone: 434.984.8430
>> sip: tgrazi...@voice.myitdepartment.net
>> Fax: 434.326.5325
>>
>> Email: tgrazi...@myitdepartment.net
>>
>> LAN/Telephony/Security and Control Systems Helpdesk:
>> Telephone: 434.984.8426
>> sip: helpd...@voice.myitdepartment.net
>>
>> Helpdesk Contract Customers:
>> http://support.myitdepartment.net
>>
>> <http://support.myitdepartment.net>Blog:
>> http://blog.myitdepartment.net
>>
>> Linked-In Profile: http://www.linkedin.com/pub/tony-graziano/14/4a6/7a4
>>
>>
>> _______________________________________________
>> sipx-users mailing list
>> sipx-users@list.sipfoundry.org
>> List Archive: http://list.sipfoundry.org/archive/sipx-users/
>>
>
>
>
> --
> Irena Dolovčak
>
> _______________________________________________
> sipx-users mailing list
> sipx-users@list.sipfoundry.org
> List Archive: http://list.sipfoundry.org/archive/sipx-users/
>



-- 
======================
Tony Graziano, Manager
Telephone: 434.984.8430
sip: tgrazi...@voice.myitdepartment.net
Fax: 434.326.5325

Email: tgrazi...@myitdepartment.net

LAN/Telephony/Security and Control Systems Helpdesk:
Telephone: 434.984.8426
sip: helpd...@voice.myitdepartment.net

Helpdesk Contract Customers:
http://support.myitdepartment.net

<http://support.myitdepartment.net>Blog:
http://blog.myitdepartment.net

Linked-In Profile: http://www.linkedin.com/pub/tony-graziano/14/4a6/7a4
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