Hi
I am having a problem whereby IP calls coming in over the WAN are being dropped on lifting up the handset. In the past I have had this problem when there is a routing problem but this does not seem to be the case this time. Do you have any suggestions on what this could be ?
Call Flow is
PSTN->PBX->E1->3825->MPLS->3825->E1->IPPBX->IP Phone