As you have asked about the Uttar Pradesh (UP) BSNL Telecom Technical Assistant (TTA) admit card, I am giving you information about it, check below for the details

I am providing you with the steps to download the admit card:

Log on to official website of BSNL TTA exam
Find out BSNL TTA Admit Card Telecom Technical Assistant Exam Hall Ticket/ Call Letter
Click on the Admit Card link to reach Downloading Portal.

Enter your
Registration ID and
Password or
Date of Birth (DOB)

Submit the details to generate your BSNL TTA Admit Card Hall Ticket.
Your BSNL TTA Admit Card Telecom Technical Assistant Hall Ticket will be displayed on screen.
Check all the details in your Admit Card and save it as PDF file.
Take printout of your Admit Card/Hall Ticket for Written Exam purpose.

Admit card is an important document.
It should be with you at the exam centre.
Without it, you will not be permitted to give the exam.