Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_68877 ( "Digital channel" text, "Digital PSIP" real, "Rogers Cable (Ottawa)" real, "Vid\u00e9otron (Gatineau)" real, "Call sign" text, "Network" text )

### Question ###
What is the Call sign of the Omni television network with a Digitial PSIP of 14.1?

### Accurate SQL ###

SELECT "Call sign" FROM table_68877 WHERE "Network" = 'omni television' AND "Digital PSIP" = '14.1'