diff -urb sipp.svn_orig/call.cpp sipp.svn_fixed/call.cpp
--- sipp.svn_orig/call.cpp	2008-12-19 13:14:51.000000000 +0300
+++ sipp.svn_fixed/call.cpp	2008-12-19 13:16:34.000000000 +0300
@@ -192,7 +192,7 @@
       /* m=audio not found */
       return 0;
     }
-    begin += strlen(pattern) - 1;
+    begin += strlen(pattern);
     end = strstr(begin, "\r\n");
     if (!end)
       ERROR("get_remote_port_media: no CRLF found");