$Revision: 1.2 $ $Date: 2004/08/24 09:00:45 $ The module does not provide any sort of API to use in other &ser; modules.

ACK_TAG enables stricter matching of acknowledgments including to-tags. Without it, to-tags are ignored. It is disabled by default for two reasons: It eliminates an unlikely race condition in which transaction's to-tag is being rewritten by a 200 OK whereas an ACK is being looked up by to-tag. It makes &uac;s happy who set wrong to-tags. It should not make a difference, as there may be only one negative reply sent upstream and 200/ACKs are not matched as they constitute another transaction. It will make no difference at all when the new magic cookie matching is enabled anyway. CANCEL_TAG similarly enables strict matching of CANCELs including to-tags--act of mercy to &uac;s, who screw up the to-tags (however, it still depends on how forgiving the downstream UAS is). Like with ACK_TAG, all this complex transactions matching goes with &rfc3261;'s magic cookie away anyway.

For programmatic use only--register a function to be called back on an event. See t_hooks.h for more details. Meaning of the parameters is as follows: cb_type - Callback type. cb_func - Callback function.

For programmatic use only--import exported TM functions. See the acc module for an example of use. Meaning of the parameters is as follows: import_structure - Pointer to the import structure.