http://www.iptel.org/ser/doc/seruser-html/x510.html Text: "It also passes request's source IP address in environment variable named SRC_IP." Code example: # first dump the message to a file using cat command exec_msg("printenv SRCIP > /tmp/exectest.txt; cat >> /tmp/exectest.txt"); Is there a typo in underscore? At least in the sources SCRIP seems to exist. BR, Juha -- tuomala(a)netnix.fi www.netnix.fi Valkjärventie 1, 02130 Espoo, Finland. +358 40 589 8929