[reSIProcate] Qustion about call hold/onhold and transfer functions

[Jimmy]

Hi all,


   I am using resiprocate 0.9.0 (tarball from sipfoundry.org) to implement a SIP
ua. But I don't know how to using DUM to write reinvite function(for hold/unhold a
call).
   I only find that someone told about setOffer and setAnswer function in maillist
but I can't find those in resiprocate project. And in DialogUsageManager class
reference I find nothing about those like hold, onhold, reinvte, setanswer,
setoffer and so on.
   And pls tell me how to transfer a call to the third party by using DUM.
   

Best regards,

Jimmy