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a7692ce2f4
Dialplan has to be careful about passing an empty device list or empty positions in the list. As a result, dialplan has to check for these conditions before using ChanIsAvail. Simplify dialplan by making ChanIsAvail handle these conditions gracefully. * Made tolerate empty positions in the device list. * Simplified the code and eliminated some unnecessary indention. ASTERISK-28638 Change-Id: I9e4b67e2cbf26b2417c2d03485b8568e898931d3
The vast majority of the Asterisk project documentation has been moved to the
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https://wiki.asterisk.org/
Asterisk release tarballs contain an export of the wiki in PDF and plain text
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doc/AST.txt
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