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IAXmodem Max Retries exceeded to host

  • Ratinox

    Hi, Ive setup a new server with Asterisk V1.6.1.0, Hylafax 4.4.4 and IAXmodem 1.2.0.

    I have set it up for load testing with 100 IAXmodems, and managed to send 100 fax's to itself in under 4 minutes, all fax's are send and received and appear correct, only problem is a repeated warning in Asterisk. I have tested and this warning happens even if I send only a single fax.

    Processor usage does not appear to be an issue.

    See below there are two "Max retries exceeded to host" warnings that appear to occur just as the fax's complete sending, is this a problem or can it safely be ignored?

        -- Called iaxmodem50/iaxmodems
        -- Call accepted by (format alaw)
        -- Format for call is alaw
        -- IAX2/iaxmodem50-7752 is ringing
        -- IAX2/iaxmodem50-7752 answered IAX2/iaxmodem49-14898
        -- Channel 'IAX2/iaxmodem50-7752' ready to transfer
        -- Channel 'IAX2/iaxmodem49-14898' ready to transfer
        -- Releasing IAX2/iaxmodem49-14898 and IAX2/iaxmodem50-7752
    [May 11 14:44:59] WARNING[3025]: chan_iax2.c:2492 __attempt_transmit: Max retries exceeded to host on IAX2/iaxmodem50-7752 (type = 6, subclass = 22, ts=1045, seqno=5)
    [May 11 14:44:59] WARNING[3028]: chan_iax2.c:2492 __attempt_transmit: Max retries exceeded to host on IAX2/iaxmodem49-14898 (type = 6, subclass = 22, ts=1063, seqno=11)
        -- Hungup 'IAX2/iaxmodem50-7752'
      == Spawn extension (iaxmodems-test, iaxmodems, 1) exited non-zero on 'IAX2/iaxmodem49-14898'
        -- Hungup 'IAX2/iaxmodem49-14898'

    • Lee Howard
      Lee Howard

      This probably represents a bug in libiax2 (in iaxmodem) or in chan_iax in Asterisk.