I have :
HW:
TE205P + VPMOCT64
SW: Asterisk 1.4.22 + dahdi-linux-2.0.0 + dahdi-tools-2.0.0 + libpri-1.4.7
Problem:
When I make test call:
*CLI> – Executing [1403@default:1] Set(“SIP/notebook-0820b610”, “CHANNEL(language)=ru”) in new stack
– Executing [1403@default:2] Dial(“SIP/notebook-0820b610”, “DAHDI/G3/1403”) in new stack
– Requested transfer capability: 0x00 - SPEECH
– Called G3/1403
– B-channel 1/3 successfully restarted on span 1
– Moving call from channel 31 to channel 1
[Nov 6 11:54:11] WARNING[15659]: chan_dahdi.c:1481 dahdi_enable_ec: Unable to enable echo cancellation on channel 1 (No such device)
^^^^^^^^^^^^ - !?! Echo cancel do’t work.
in the /etc/asterisk/chan_dahdi.conf:
…
echocancel=yes
echocancelwhenbridged=no
echotraining=no
#=====================
Why I recive message : "Unable to enable echo cancellation on channel 1 (No such device) " ? 
Please Help !
VBR,
Vladimir