Add 'L16-256' MIME subtype alias for slin16.

Asterisk has supported the 'L16' MIME subtype for 16kHz signed linear (PCM)
audio for quite some time, but some endpoints refer to it as 'L16-256'. This
commit adds this as an alias for the existing format.



git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.8@353126 65c4cc65-6c06-0410-ace0-fbb531ad65f3

main/rtp_engine.c

@@ -100,6 +100,7 @@ static const struct ast_rtp_mime_type {
 	{{1, AST_FORMAT_ADPCM}, "audio", "DVI4", 8000},
 	{{1, AST_FORMAT_SLINEAR}, "audio", "L16", 8000},
 	{{1, AST_FORMAT_SLINEAR16}, "audio", "L16", 16000},
+	{{1, AST_FORMAT_SLINEAR16}, "audio", "L16-256", 16000},
 	{{1, AST_FORMAT_LPC10}, "audio", "LPC", 8000},
 	{{1, AST_FORMAT_G729A}, "audio", "G729", 8000},
 	{{1, AST_FORMAT_G729A}, "audio", "G729A", 8000},