I believe you have an 1892 Berthier artillery carbine, dated 1917 at Continsouza. The receiver was made by Continsouza, I think a rather uncommon maker that was only commissioned during WW1 to make rifles and carbines. The barrel is dated 1917 and was made by "Manufacturer de Armee (MA) Continsouza (C)" in that year.
The "CC" and "circle C" and "circle J" are, I believe, inspector and/or proof markings for acceptance into military service. The serial number is just underneath and is "7097 g".
The rear sight is calibrated in meters and has a battle sight of 250m I think, when the sight is flipped all the way forward towards the front sight.
She has some beautiful wood that has some repair patches on it too. The French used these carbines up until the 1960s and they saw extensive use alongside other French arms through WW1, WW2, and even up to French fighting in Indochina in the 1950s. Talk about a service firearm!
Treat her well, she has been through alot.