[Freeswitch-users] mod_opal - call charged before H.225 connect

Diego Viola diego.viola at gmail.com
Tue Oct 6 17:22:13 PDT 2009 

Yeah I understand your point of view, but saying "I want a H.323 module" or
"I want a Ferrari" wont magically make it happen.

We need to work on it ourselves or pay to the people that knows how to do it
to do it for us.

There is no other way I think.

Diego



On Tue, Oct 6, 2009 at 11:41 PM, Tihomir Culjaga <tculjaga at gmail.com> wrote:

> Diego,
>
> what i'm pointing here is the situation where you have a great product that
> lacks in one of most common protocol. It is true H323 is going to disappear
> (eventually), it is true that the community prefers SIP/IAX instead ... but
> the reality still remains. H323 is going to be used for quite a long time to
> exchange a lot of traffic while FS will be left aside. Today, when you setup
> an IP peering interconnection 80% of carriers will prefer H323.
>
> Of course, developing something costs "time" (and we all know what time
> stands for...) and as i said, i understand the financial point of view and i
> really understand if nobody is going to work on that, but let's face it FS
> doesn't have any usable module to reliably handle H323 protocol.
>
>
> said that, i don't intend to offend anyone... just facing the reality.
>
>
> regarding the h323 module, we don't have any issue fixing the existing or
> developing a new one... but before we go developing something it is always
> better check if the thing you want already exists in an usable state or
> not... that's what i did today.
>
>
> So, I'm interested in a reliable module handling H323v4... anyone else?
>
>
> T.
>
>
>
>
>
>
> On Tue, Oct 6, 2009 at 11:45 PM, Diego Viola <diego.viola at gmail.com>wrote:
>
>> Instead of complaining and demanding things for free, people should start
>> to put their money where their mouth is.
>>
>> Diego
>>
>>
>> On Tue, Oct 6, 2009 at 8:47 PM, Tihomir Culjaga <tculjaga at gmail.com>wrote:
>>
>>> hi Anthony,
>>>
>>> it is somewhere here:
>>>
>>>          switch_status_t
>>> FSConnection::receive_message(switch_core_session_message_t *msg)
>>>
>>>
>>> anyhow, i will open an issue jira of course.
>>>
>>>
>>> I understand your financial point of view, but anyhow while the entire
>>> world is wants sip and trying to move to sip, the reality is quite
>>> different. The majority of voice traffic exchanged via IP is still H323.
>>> This means a working SIP - H323 interworking is really needed... pity nobody
>>> wants/has time to work in this direction to produce a decent mod_h323.
>>>
>>>
>>>
>>> T.
>>>
>>>
>>>
>>>
>>>
>>>
>>> On Tue, Oct 6, 2009 at 9:25 PM, Anthony Minessale <
>>> anthony.minessale at gmail.com> wrote:
>>>
>>>> pcap is not as useful as FS console log on debug with:
>>>> sofia profile internal siptrace on
>>>>
>>>> you should be reporting issues to jira under mod_opal not to the mailing
>>>> list.
>>>> http://jira.freeswitch.org
>>>>
>>>> FYI
>>>> There is little financial support from the community for h323 which
>>>> prevents the mod_opal from getting much attention.
>>>> We actually have to contract the author of opal to help with these
>>>> issues including the original writing of the module that he did with very
>>>> little funding and nobody ever wants to pay him to improve it.
>>>>
>>>> That does not mean your issue will not be addressed but there is no
>>>> promise how fast it will be.
>>>>
>>>>
>>>>
>>>> On Tue, Oct 6, 2009 at 12:37 PM, Tihomir Culjaga <tculjaga at gmail.com>wrote:
>>>>
>>>>> hello guys,
>>>>>
>>>>>
>>>>> i was playing with mod_opal to see if i can make it working ... well it
>>>>> seems SIP-H323 interworking is not tuned at all.
>>>>>
>>>>> I have a call from a registered sip user (1001) to PSTN via mod_opal
>>>>>
>>>>>
>>>>> <include>
>>>>>   <extension name="EMERGENCY">
>>>>>     <condition field="destination_number"
>>>>> expression="^0(112|9[23456])$">
>>>>>       <action application="set"
>>>>> data="effective_caller_id_number=1001282122"/>
>>>>>       <action application="set" data="NCX_IP=10.4.4.254"/>
>>>>>       <action application="set" data="call_timeout=30"/>
>>>>>       <action application="set" data="hangup_after_bridge=true"/>
>>>>>
>>>>>       <action application="bridge" data="opal/h323:0$1@${NCX_IP}"/>
>>>>>     </condition>
>>>>>   </extension>
>>>>>
>>>>>   <extension name="SPECIAL_SERVICES">
>>>>>     <condition field="destination_number"
>>>>> expression="^0(9[01789]\d{3,4})$">
>>>>>       <action application="set"
>>>>> data="effective_caller_id_number=1001282122"/>
>>>>>       <action application="set" data="NCX_IP=10.4.4.254"/>
>>>>>       <action application="set" data="call_timeout=30"/>
>>>>>       <action application="set" data="hangup_after_bridge=true"/>
>>>>>
>>>>>       <action application="bridge" data="opal/h323:0$1@${NCX_IP}"/>
>>>>>     </condition>
>>>>>   </extension>
>>>>>
>>>>>   <extension name="ENYTHING_ELSE">
>>>>>     <condition field="destination_number"
>>>>> expression="^0([2-8]\d{6,7}|0[1-9]\d{7,8}|00[1-9]\d{8,16})$">
>>>>>       <action application="set"
>>>>> data="effective_caller_id_number=1001282122"/>
>>>>>       <action application="set" data="NCX_IP=10.4.4.254"/>
>>>>>       <action application="set" data="call_timeout=30"/>
>>>>>       <action application="set" data="hangup_after_bridge=true"/>
>>>>>
>>>>>       <action application="bridge" data="opal/h323:0$1@${NCX_IP}"/>
>>>>>     </condition>
>>>>>   </extension>
>>>>> </include>
>>>>>
>>>>>
>>>>>
>>>>> One of the many issues i sow is that FS connects the call on SIP leg
>>>>> before it actually receives H.225 connect from H323 leg... as it is
>>>>> configured to send 200 OK on the 1st H.225 message containing a FastStart
>>>>> element/OLC.
>>>>>
>>>>>
>>>>> Attached is the tcpdump i took on FS machine... just use this filter:
>>>>> "h225 or h245 or q931 or sip"
>>>>> Also, you can check the attac CDR,,,, this is an unanswered call i
>>>>> placed to PSTN and FS billed it 23 seconds.
>>>>>
>>>>>
>>>>>
>>>>> Can anyone tell where i can do correct SIP - H323 message mappings to
>>>>> avoid this?
>>>>>
>>>>>
>>>>>
>>>>> T.
>>>>>
>>>>>
>>>>>
>>>>>
>>>>> _______________________________________________
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>>>>>
>>>>>
>>>>
>>>>
>>>> --
>>>> Anthony Minessale II
>>>>
>>>> FreeSWITCH http://www.freeswitch.org/
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>>>> Twitter: http://twitter.com/FreeSWITCH_wire
>>>>
>>>> AIM: anthm
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>>>> IRC: irc.freenode.net #freeswitch
>>>>
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>>>>
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>>>
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>>
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