English to French Bus/Financial Finance (general)

Bonsoir

"If at any time dividends on any Series A Serial Preferred Stock shall be in arrears in an amount equal to six (6) quarterly dividends thereon, the occurrence of such contingency shall mark the beginning of a period (herein called a "default period") which shall extend until such time when all accrued and unpaid dividends for all previous quarterly dividend periods and for the current quarterly dividend period on all shares of Series A Serial Preferred Stock then outstanding shall have been declared and paid or set apart for payment."

Peut-on traduire "default period" par "période de défaut" ou s'agit-il ici d'un terme plus général ?

Je trouve "period of default" traduit par "période de défaut" mais pas "default period". Sont-ce au final des synonymes ?

En vous remerciant