What are the good steps of managing the collection in big companies?

Credit Control....it starts right from the order of the customer and keep him under control till amount is received.Loose tracking is counter checked.

1) Establish the process 2) Create credit policy 3) Timely Invoice 4) continuous followups

should have a proper follow up with our debtors on daily, weekly and monthly bases

make good company planscreate best environment to all employees and customers.use the high technology

se renseigner d'abord sur sur son client, choisir la bonne personne pour faire le recouvrement , instaurer une procédure de recouvrement , impliquer le service commercial et surtout ne pas perdre de temps pour recouvrir la créance 

Establishing liability is the first step in Accounts receivable. The moment invoice is reached to the customer follow up begins. Creating good relation with customer and following up with positive aggresiveness  will help a company to get its money on time.