[asterisk-users] Error messages with chan_dahdi

[equis software]

HI, I'm using asterisk-1.4.24, dahdi-linux-complete-2.4.0+2.4.0 and
libpri-1.4.11.4
When dial, when 492131 answer, in console appear some error messages



  -- AGI Script Executing Application: (DIAL) Options: (DAHDI/g1/492131|60)
    -- Requested transfer capability: 0x00 - SPEECH
    -- Called g1/492131
[Dec  4 11:15:59] WARNING[7669]: chan_dahdi.c:1776 dahdi_enable_ec: Unable
to enable echo cancellation on channel 2 (No such device)
    -- DAHDI/2-1 is ringing
[Dec  4 11:16:02] WARNING[7669]: chan_dahdi.c:1776 dahdi_enable_ec: Unable
to enable echo cancellation on channel 2 (No such device)
    -- DAHDI/2-1 answered DAHDI/1-1
    -- Native bridging DAHDI/1-1 and DAHDI/2-1
[Dec  4 11:16:02] ERROR[7669]: chan_dahdi.c:8735 dahdi_pri_error: ROSE
REJECT:
[Dec  4 11:16:02] ERROR[7669]: chan_dahdi.c:8735 dahdi_pri_error:
INVOKE ID: 3
[Dec  4 11:16:02] ERROR[7669]: chan_dahdi.c:8735 dahdi_pri_error:
PROBLEM: Invoke: Unrecognized Operation


Any ideas?
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