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call transfer fail

Publication Date:  2013-08-28 Views:  175 Downloads:  0
Issue Description
cusotmer want U1980 transfer the call back to trunk where it receive the call ,ut transfer fail
Alarm Information
get log ,pbx send SIP/2.0 603 Decline ,transfer fail.
Handling Process all the permission that allow every terminal can register and make call ,but transfer still fail .

2.find an parameter in softargu 334 ,when make transfer ,if the incoming trunk and outgoing trunk is same ,and number of caller and callee is same too ,if forbid the call , in default it is forbidden .turn off it .then transfer success . 
Root Cause
maybe caused by sip agent or default police of transfer.
before open this parameter ,we should confirm with operater that if the  incoming trunk and outgoing trunk is same ,and number of caller and callee is same too