[SR-Users] Calling ims charging function in route_failure

Hi all, What I want to do ~~~~~~~~~~~~~~ If a call to a SIP AoR fails then try the PSTN number associated with the AoR by routing the request to a PSTN gateway. Calls to a PSTN gateway need to be charged so need to call the Ro_CCR function in ims_charging module. How I tried to do it ~~~~~~~~~~~~~~ In the failure_route[MANAGE_FAILURE] block I call the Ro_CCR() Result was ~~~~~~~~ Kamailio fails to parse config file. yyparse(): misused command Ro_CCR yyerror_at(): parse error in config file //etc/kamailio/kamailio.cfg, line 1162, column 91: Command cannot be used in the block So two questions: 1) What constraints are there for calling functions in the failure_route blocks i.e. how does parser decide what can be called and what can't 2) Any thoughts of how I can do effectively a late charging decision Cheers and thanks in advance Shane Shane Harrison Senior Software Engineer Imagination Technologies NZ Limited Level 2 1 Market Grove Lower Hutt, 5010 New Zealand PO Box 30-449 Lower Hutt, 5040 New Zealand Phone: +64 4 890-3681 ext 3361