Index: chan_zap.c
===================================================================
--- chan_zap.c	(Revision 9162)
+++ chan_zap.c	(Arbeitskopie)
@@ -7618,7 +7618,7 @@
 	end = ifend;
 	/* We do signed linear */
 	oldformat = format;
-	format &= (AST_FORMAT_SLINEAR | AST_FORMAT_ULAW);
+	format &= (AST_FORMAT_SLINEAR | AST_FORMAT_ULAW | AST_FORMAT_ALAW);
 	if (!format) {
 		ast_log(LOG_NOTICE, "Asked to get a channel of unsupported format '%d'\n", oldformat);
 		return NULL;