[asterisk-bugs] [JIRA] (ASTERISK-24285) ulimit -n 1000000, but only create 500 channels in one conference, why?

[wangpeng (JIRA)]

wangpeng created ASTERISK-24285:
-----------------------------------

             Summary: ulimit -n 1000000,but only create 500 channels in one conference,why?
                 Key: ASTERISK-24285
                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-24285
             Project: Asterisk
          Issue Type: Information Request
      Security Level: None
          Components: Channels/chan_sip/General
    Affects Versions: 11.5.0
         Environment: ubuntu12.04 ,and fs.file-max = 10000000   
            Reporter: wangpeng


i only use sip protocol. only can create 500 channels in one conference. 
when create 501st  channel,log is :

    -- Executing [1 at addtoconf:3] Originate("SIP/8012-00000000", "sip/1300,exten,from-internal,3346,1,30") in new stack
[Aug 29 09:45:43] ERROR[4876][C-00000000]: res_rtp_asterisk.c:1761 ast_rtp_new: Oh dear... we couldn't allocate a port for RTP instance '0xa7c5402c'
[Aug 29 09:45:43] NOTICE[4876][C-00000000]: channel.c:5637 __ast_request_and_dial: Unable to request channel sip/1300


 how to Increase this?



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