When we were using Elastix 1.3-2 and previous versions our "zapata-channels.conf" file had "context=from-zaptel", rather than the "context-from-pstn" which was the default. We had to change this every time we upgraded to get rid of the "all circuits are busy now" message. In 1.5.2-2; chan_dahdi.conf chan_dahdi.conf.template dahdi-channels.conf all have "context=from-pstn" and I am again getting the "all circuits are busy now" again. What do I need to change "context=from-pstn" to. I assume that "context=from-zaptel" is no longer available?