fix chopping off of prompts (bug #3784)

git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/v1-0@5325 65c4cc65-6c06-0410-ace0-fbb531ad65f3

res/res_adsi.c

@@ -389,6 +389,8 @@ int adsi_transmit_message(struct ast_channel *chan, unsigned char *msg, int msgl
 	if (readformat)
 		ast_set_read_format(chan, readformat);
 
+	if (!res)
+		res = ast_safe_sleep(chan, 100 );
 	return res;
 }