[OpenSIPS-Users] Pass calls to another realm via gateway

[Alexander]

  Well, the bitter truth is: our SIP platform (remember this brand: TMEdia) does
not  support IP fragmentation. Opensips attempts to send a request (1505 bytes),
but  MTU  is  1500. And this is it - no ACK, no NACK :) Vendor recommends to use
SIP over TCP (sure, 'cause TCP takes care of everything). It seems, that we have
no choice.
  BTW, what do you think about possible performance loss because of TCP? Or it's
neglible?

> El Martes, 27 de Octubre de 2009, Alexander escribió:
>>   No ideas? :(

> No, never seen such issue :(

>  
>> 
>> 
>>      Right before t_relay() $du is NULL.
>> 
>>  2009/10/27 Iñaki Baz Castillo <ibc at aliax.net>
>> 
>>  El Martes, 27 de Octubre de 2009, Alexander escribió:
>>  >   It seems it doesn't leave - tcpdump shows nothing and our platform
>>  > receives nothing.
>>  >   t_relay() is called, and I see this:
>>  >
>>  > Oct 27 12:12:35 [16751] DBG:tm:retransmission_handler:
>>  > retransmission_handler : request resending (t=0xb618de58, INVITE
>>  > sip:200213 at 62.117.120.101:5061 SIP/2.0...
>>  > Oct 27 12:12:35 [16751] DBG:tm:retransmission_handler:
>>  > retransmission_handler : request resending (t=0xb618de58, INVITE
>>  > sip:200213 at 62.117.120.101:5061 SIP/2.0...
>>  > Oct 27 12:12:35 [16751] DBG:tm:retransmission_handler:
>>  > retransmission_handler : request resending (t=0xb618de58, INVITE
>>  > sip:200213 at 62.117.120.101:5061 SIP/2.0...
>>  >
>>  >   62.117.120.101:5061 - it's the address:port of our platform. I call
>>  > rewritehostport() to set this address and port, and then t_relay().
>>  >
>>  >   This happens when Opensips receives a call from another domain (for
>>  > example, from sipbroker). Inside our domain all works fine and INVITE
>>  >  passes to our platform correctly.
>> 
>>  Before doint t_relay() printf with xlog the value of $du pseudo-variable
>>  (the real destination). Even if you set the RURI, $du has preference). $du
>>  is usually automatically set when doing a loockup for a natted contact and
>>  so.
>> 
>>  --
>>  Iñaki Baz Castillo <ibc at aliax.net>
>> 
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>>  Users at lists.opensips.org
>>  http://lists.opensips.org/cgi-bin/mailman/listinfo/users
>> 
>> 
>> 
>> 
>>  -- 
>>  С уважением,
>>   Alexander                          mailto:goal81 at gmail.com
>> 





-- 
С уважением,
 Alexander                          mailto:goal81 at gmail.com