Giuseppe wrote:
Can anybody tell me if there is some error or something missing in this configuration please?

I have the same card in a few of my servers and the echo canceller works just fine. I'm not 100% sure, but something does jump out at me:

== ISDN3: Answering for 'xxxxxxxxx'
  -- Playing 'wsa_benvenuto_lib_uni' (language 'it')

This plays *before* the echo canceller starts. If you suppress this, does the echo can get a chance to setup successfully?

Mar 31 16:40:21 WARNING[30181]: file.c:1029 ast_waitstream: Unexpected control subclass '14' == ISDN3: Setting up echo canceller (PLCI=0x103, function=1, options=4, tail=64)
== ISDN3: Setting up DTMF detector (PLCI=0x103, flag=1)
  -- ISDN3: Error setting up echo canceller (PLCI=0x103)
Mar 31 16:40:21 WARNING[29878]: chan_capi.c:3334 show_capi_conf_error: ISDN3: conf_error 0x300b PLCI=0x103 Command=FACILITY_CONF,0x8497
     > CAPI INFO 0x300b: Facility not supported

cYa,
Avi

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