NEC Xen IPK Features & Specifications Manual page 270

July 2003 NEC Business Solutions Ltd
The following DID Calls are counted against the number of total calls:
A call that is placed on hold, transferred or conferenced.
A call received by one Tenant and Transferred to another Tenant
counts against the first Tenant.
A call that is received and disconnected.
Figure A8-1: Direct Inward Dialling Operation
260 – D8 Direct Inward Dialling (DID)