Something

    int num1=0;
     int num2=0; 
     int pkt_type = msg -> kind();
     if (pkt_type ==1)
       {
       num1++;
       ev << "Received data packet from Network1 \n";
       ev << "Received \n"; num1 "packets from Network1 \n";
       }
     if (pkt_type ==0)    
       {
       num1++;    
       ev << "Received voice packet from Network1 \n";
       ev << "Received \n"; num1 "packets from Network1 \n";
       }
     if (pkt_type ==2)
       {
       num2++;
       ev << "Received data packet from Network2 \n";
       ev << "Received \n"; num2 "packets from Network2 \n";
       }
     if (pkt_type ==3)
       {
       num2++;
       ev << "Received voice packet from Network2 \n";
       ev << "Received \n"; num2 "packets from Network2 \n";
       }