I use ‘asterisk 13.21’ and sometimes I got a warning:
app_dial.c:1450 dial_exec_full: Unable to create channel of type 'DAHDI' (cause 34 - Circuit/channel congestion)
This warning is very often meets with on different hardware cards (Sangoma, Digium etc). Also problem meets on wide range of asterisk version from 1.4 till 15.x.
What’s a real problem in this case?
Maybe somebody knows solution of it.
Any suggestions are welcome.