Cisco IVR Tcl Script (AS5300) - Urgent

In need of a Tcl script for Cisco 5300 to do the following; - Answer PRI inbound - Play welcome message ($WELCOME used for message variable) - Wait up to $TIMEOUT for a "0" to be pressed -- If "0" pressed switch call using G723.1 to a SIP gateway. -- SIP gateway set as a variable in script so it can be changed easily ($GATEWAY). --If "0" not pressed within $TIMEOUT, terminate call, release voice resources. - Terminate call when user hangs up after call completion, release voice resources. --------------------------------------------------------------- Attached call flow for clarity. Debug output on console expected (enabled when $DEBUGOUT variable set) Successful bidder expected to be available for future enhancements/bug fixes (at least 12 months), also expected to be experienced in As5300 Tcl scripting. Equipment info; Cisco AS5300 with DSPM Voice and Quad PRI/E1 card. If possible, IOS config can also be completed in the project scope. Script and config required by 31/3/2010 (Australia).