topic Re: Getting existing calls on CUCM in Call Control

Getting existing calls on CUCM

h.abdelraouf — Thu, 09 Jul 2020 15:54:58 GMT

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,

Re: Getting existing calls on CUCM

upchaurasia — Wed, 22 Jul 2020 05:33:35 GMT

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

Re: Getting existing calls on CUCM

dstaudt — Wed, 22 Jul 2020 22:15:48 GMT

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

Re: Getting existing calls on CUCM

upchaurasia — Tue, 28 Jul 2020 11:33:34 GMT

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