[Users] mediaproxy and registrar on two different server

[Daniel-Constantin Mierla]

Hi Andrea,

On 10/04/05 16:55, andrea wrote:

> Dear Daniel,
>
> I'd implement this architecture because I need to separate front-end 
> proxy from core network (registrar, voice gateway and other apps).
> Can you suggest me another possible architecture?
>
> A possible approach can be:
> - openser+mediaporxy module+usrloc module receive register, applies 
> fix_nat_contact and then sends it to the internal register
> - on INVITE openser+mediaproxy module+usrloc can lookup directly into 
> registar DB and then decides howto handle the sip message
> any other suggestions?

You must have in mind that in most of the cases, the phone behind the 
nat can be reachable only from the system where it had sent the register 
request (pinhole binding for symmetric NATs takes in consideration the 
source address/port and destination address/port). So, even if you 
duplicate the registrations and have a nat traversal box + registrar 
box, the registrar has to route the messages through nat traversal box 
when it needs to contact the phone. In this case, you have to store the 
address of the nat traversal box along the contact address.

The second option needs a cacheless usrloc module and same logic as I 
said above.

There are some devices dedicated for SIP nat traversal, but there none 
free I am aware. If you do not want to develop one, you have to go for 
one of them.

Cheers,
Daniel

> thanks
>
> Andrea
>
> Daniel-Constantin Mierla wrote:
>
>> Hi,
>>
>> I am not sure if you want to keep only openser+mediaproxy 
>> module+mediaproxy in front of registrar (openser+registrar 
>> module+usrloc module). If yes, this is rather impossible right now, 
>> mediaproxy module has to be deployed together with usrloc module in 
>> order to send NAT pings to NATed sip phones (the usrloc module stores 
>> the needed information about phones' contact addresses).
>>
>> Cheers,
>> Daniel
>>
>>
>> On 10/04/05 13:49, andrea wrote:
>>
>>> Dear all,
>>>
>>> I'm working to separate on two different servers registrar and 
>>> mediaproxy.
>>>
>>> Mediaproxy server (with both mediaproxy and ser proxy process) will 
>>> be the front-end and all registers and calls from Intenet will be 
>>> directed to this server and then routed to internal registrar.
>>>
>>> Now, I'm working with natted clients. I've started with only one 
>>> server (with only one ser) and it works fine. When I've tried to 
>>> split the architecture on two server I can't fine a good configuration.
>>> In particular, when a user with a public IP calls a natted user, the 
>>> RTP  doesn't use mediaproxy
>>> Anyone can help me? do you have any working configurations?
>>>
>>> thanks,
>>>
>>> Andrea
>>>
>>>
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>>> http://openser.org/cgi-bin/mailman/listinfo/users
>>>
>>
>>
>
>
>