The council in Trullo (692), also known as Penthekte (Quinisextum), regarded to be as a continuation of the Fifth and Sixth Ecumenical Councils, dealt exclusively with doctrine & clergy celibacy and issued several interesting canons:
Canon 13: Since we know it to be handed down as a rule of the Roman Church that those who are deemed worthy to be advanced to the diaconate or presbyterate should promise no longer to cohabit with their wives, we, preserving the ancient rule and apostolic perfection and order, will that the lawful marriages of men who are in holy orders be from this time forward firm, by no means dissolving their union with their wives nor depriving them of their mutual intercourse at a convenient time. Wherefore, if anyone shall have been found worthy to be ordained subdeacon, or deacon, or presbyter, he is by no means to be prohibited from admittance to such a rank, even if he shall live with a lawful wife. Nor shall it be demanded of him at the time of his ordination that he promise to abstain from lawful intercourse with his wife: lest we should affect injuriously marriage constituted by God and blessed by his presence, as the Gospel saith: "What God hath joined together let no man put asunder;" and the Apostle saith, "Marriage is honourable and the bed undefiled;" and again, "Art thou bound to a wife? seek not to be loosed." But we know, as they who assembled at Carthage (with a care for the honest life of the clergy) said, that subdeacons, who handle the Holy Mysteries, and deacons, and presbyters should abstain from their consorts according to their own course [of ministration]. So that what has been handed down through the Apostles and preserved by ancient custom, we too likewise maintain, knowing that there is a time for all things and especially for fasting and prayer. For it is meet that they who assist at the divine altar should be absolutely continent when they are handling holy things, in order that they may be able to obtain froth God what they ask in sincerity.
I know that RC considers the in Trullo council to be reprobate and erratic mostly because the Holy Fathers of the Penthekte Council anathematized and excommunicated any one who insists that the clergy should be celibate
(canons 3, 6, 12, 13, 18). For us the in Trullo Council is Ecumenical and adds its canons to the decrees of the Fifth and Sixth Councils.