my $number_of_crds = 0;
while(<INPUT_FILE>) {

    if ( $_ =~ /CME20CP6/) {
        $number_of_crds++;
    }

    
    ...
    ...
}

##</code><code>##

if ( $_ =~ /callIdentificationNumber\s+:\s+\'(.+)\') {
    print "callIndentificationNumber: $1\n";
}