Fix INFO on SIP with weird hardware

git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@1068 65c4cc65-6c06-0410-ace0-fbb531ad65f3

diff --git a/channels/chan_sip.c b/channels/chan_sip.c
index ac323bf..379dc1f 100755 (executable)
--- a/channels/chan_sip.c
+++ b/channels/chan_sip.c
@@ -3646,7 +3646,7 @@ static void receive_info(struct sip_pvt *p, struct sip_request *req)
        struct ast_frame f;
        char *c;
        /* Try getting the "signal=" part */
-       if ((c = get_sdp(req, "Signal"))) {
+       if (strlen(c = get_sdp(req, "Signal")) || strlen(c = get_sdp(req, "d"))) {
                strncpy(buf, c, sizeof(buf) - 1);
        } else if (get_msg_text(buf, sizeof(buf), req)) {
                /* Normal INFO method */