The call duration timer (elapsed call timer) in the LCD currently goes away after the call is hung up immediately. The customer would like it to display for 15-20 seconds after the call, so they can notate. Trunks are ISDN/PRI. Any Ideas other than SMDR?
I would Think ACD with MIS, maybe a Call accounting System as well. That way he could Keep track for billing. Calls per agent so on and so forth. Also try MB:20-02-08.
I looked and found no timer setting for what you are asking, SMDR with a call accounting software is your best bet.
If you are a NEC dealer or reseller call in a request to NEC. Once they receive enough request for a feature it is sent to engineering.