CISF ASI LDCE Call Letter 2019 Released Soon.Central Industrial Security Force has going to release the call letter for Assistant Sub Inspector post. Candidates need their registration no. and password to download the CISF ASI LDCE call letter. Call letter is an important document for entering the exam centre. No candidate will be allowed inside the exam centre without a call letter. The call letter releases separately for the written exam, physical test, PET exam and medical examination for only the eligible candidates. Below is the matrix showing the dates related to CISF ASI LDCE Call Letter 2019.