Web API for T20

[Samael]

Hello. Is there any way to automotate via api such process:
1. Account 1 dials or answers the call.
2. In moment of bridging (this moment can be caught via 3rd party service), account 1 puts on hold and phones automatically dial from account 2 to specific address.
3. After dialed party from 2nd accound answers, 1st and 2nd account parties goes to 3way telephone-based conference.

Idea is to get automatic conference on dial or answer with phone service, not PBX.

Phone - T20(T22)

[Yealink Support]

Hello,
Do you mean Phone A use account 1(PBX-1) to call Phone B(PBX-1), and then A put on hold, then make a new call to Phone C(PBX-2) with account 2(PBX-2), after C answered, Phone A press Conf button to make three parties in a conference?
If yes, you can achieve this,here i tested with account1(3CX-PBX) and account2(PBXnsip), and works well.
And my T22 use the latest firmware 7.70.0.130.