Getting existing calls on CUCM

[h.abdelraouf]

I am using lineGetNewCalls() to get handles to the calls which is established before invoking my application.
https://docs.microsoft.com/en-us/windows/win32/api/tapi/nf-tapi-linegetnewcalls

The issue is that It always returns zero in the dwCallsNumEntries.

Although GetAddressStatus return the correct number of active calls on the same address that GetNewLineCalls uses
https://docs.microsoft.com/en-us/windows/win32/api/tapi/nf-tapi-linegetaddressstatus

GetNewLineCalls() is directly invoked just after I get the line handle from OpenLine()

CUCM version 12.5

Thank,

[upchaurasia]

Using JTAPI when we add call observer on address/terminal we get events from JTAPI if there are any call on that address.

There must be similar mechanism in TAPI also to find the calls already there.

Regards,

Umesh

[dstaudt]

In general, after lineOpen() TAPI will provide events (e.g. LINE_APPNEWCALL) sufficient to update the app on the current state of any previously existing calls.

lineGetNewCalls() may only work for lines which have not yet been opened; also might try various options for dwSelect

This thread may be of interest: https://microsoft.public.win32.programmer.tapi.narkive.com/btSh9EqV/csta-snapshotdevice-is-it-possible-to-do-it-using-tapi

[upchaurasia]

Hi,

I hope solution suggested by David worked for you. If yes, can you please marked as answer/helpful so that in future if anyone has similar kind of query they can get benefited from your input.

Thanks & Regards,

Umesh