Parse text on the phone screen for automation

Hi,

I am automating the polycom phone and I am able to make and receive calls, collect logs etc using push commands.

The phone info is given below.

Phone Model SoundStation IP 6000
Part Number 3111-15600-001 Rev:U
MAC Address 00:04:F2:F6:F6:7B
IP Address 10.198.32.96
UC Software Version 4.0.11.0583
BootROM Software Version 5.0.1.10553

But, now I intent to read what is displayed on the screen in my automation script. e.g. I am calling phone 2 from phone 1 using a push command and I can receive the call by passing one more push command to phone 2 to press the "answer" softkey. But before pressing answer key I need to be sure that the call actullay came from Phone_1 by parsing what is displayed on the phone_2 screen.

Is there any way to achieve this?