Telnet is not happening, what should I do?

Telnet is not happening, what should I do?

For CZ on Public Internet, at NPCI end whitelisting/port opening is not required. Bank end issue and bank has to check at their network level whether whitelisting/port opening is done at their end for following NPCI CZ Public IPs:

◾NPCI to Bank - 103.14.162.210:443
◾Bank to NPCI - 103.14.162.209:443