[SR-Users] Several Asterisk on this same IP

[Alex Balashov]

Well, indeed, but a sequential scan of many consecutive ports like this from the bottom of the same range can be quite a latent operation. So at the very least the allocation strategy would benefit from being random. Does Asterisk take that approach? 

On March 13, 2017 6:04:06 PM EDT, Kjeld Flarup <kfc at viptel.dk> wrote:
>No there is no such thing as magic.
>
>The most obvious way to implement the RTP port handling, is to first 
>open the next UDP port in the OS, and then report that back in the 
>Invite/200Ok. If the port cannot be opened, then simply try the next in
>
>line.
>
>
>Med venlig hilsen / Best regards
>Kjeld Flarup (Christensen) M.Sc E.E, Teknisk chef
>Viptel ApS, Hammershusvej 16C, DK-7400 Herning
>Telefon: +45 46949949, Telefax: +45 46949950, http://viptel.dk
>
>On 03/13/2017 01:52 PM, przeqpiciel wrote:
>> Maybe there is an magic device? I know that if we have an asterisk, 
>> that become to us with default configuration of rtp ports sets to 
>> 10000_20000. And each call choose the one port fron that range. So if
>
>> we have several asterisks with default configuratiin of rtp, there is
>
>> possibilities to have 2 concurent calls each through another asterisk
>
>> instance with this same rtp port. Am i right?
>>
>> So mqybe this magic device could see source IP address and route rtp 
>> to correct adterisk?
>>
>> 13.03.2017 7:15 AM "Alex Balashov" <abalashov at evaristesys.com 
>> <mailto:abalashov at evaristesys.com>> napisał(a):
>>
>>     On Mon, Mar 13, 2017 at 07:08:09AM +0100, Kjeld Flarup wrote:
>>
>>     > We run multiple Asterisk instances since 1.4 and never
>>     configured RTP ports.
>>     >
>>     > More challenging issues are the Asterisk DB, and the Asteisk
>home.
>>
>>     You may not have enough calls for RTP port collisions to become
>an
>>     issue. Otherwise, I'm not sure how you're avoiding it, since
>Asterisk
>>     isn't aware of which ports from within the range are in use.
>>
>>     --
>>     Alex Balashov | Principal | Evariste Systems LLC
>>
>>     Tel: +1-706-510-6800 <tel:%2B1-706-510-6800> / +1-800-250-5920
>>     <tel:%2B1-800-250-5920> (toll-free)
>>     Web: http://www.evaristesys.com/, http://www.csrpswitch.com/
>>
>>     _______________________________________________
>>     SIP Express Router (SER) and Kamailio (OpenSER) - sr-users
>mailing
>>     list
>>     sr-users at lists.sip-router.org
><mailto:sr-users at lists.sip-router.org>
>>     http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users
>>     <http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users>
>>
>>
>>
>> _______________________________________________
>> SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing
>list
>> sr-users at lists.sip-router.org
>> http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users


-- Alex

--
Principal, Evariste Systems LLC (www.evaristesys.com)

Sent from my Google Nexus.