Service Creation for sipd sip-cgi

The web form invokes a cgi script that generates Tcl or Perl code for the actual call behavior, using the sip-cgi specification. The Tcl code is then interpreted by the sipd server. (Details of where this file is to be located remain to be worked out. This might be a directory like /import/sipd/scripts/foo for user foo or it may be uploaded via sipc).

cgi-tcl is to be used to write the cgi scripts. It's installed in ~hgs/lib/cgi1.2/

Example services include:

• time-of-day call routing to various numbers (home, office, mobile), including the Columbia unified messaging system;
• cooperative telemarketer filtering application -- before allowing in-bound call, check whether caller is on a "black list";
• automatic directory look-up using LDAP (e.g., an outbound call to "John Doe, Columbia University" gets redirected to jd48@columbia.edu)
• dialing plan for routing calls based on destination number.