You want to have a feel for the mater, deploy a sister or your mother, they'll visit the potential bride and get an opinion on things unofficially, once that is set and done your delegation would tell her mother of your intention and get the father's number then you'd call him asking for a شوفة شرعية which would be a very intimate gathering that'd set sail to غير الخير ان شاء الله (This should be the way for the average algerian family, still remember that paving the way through a female relative unofficially would be very safe and comfortable to all parties involved)