<apex:pageBlock title="Opportunity Contact Roles" mode="edit">
        <apex:pageBlockTable value="{!Opportunity__r.ContactRoles}" var="ContactRole">
            <apex:column headerValue="Name" value="{!Opportunity__r.ContactRole.Contact.Name}"/>
            <apex:column headerValue="Phone" value="{!Opportunity__r.ContactRole.Contact.Phone}"/>
            <apex:column headerValue="Other Phone" value="{!ContactRole.Contact.OtherPhone}"/>
            <apex:column headerValue="Email" value="{!Opportunity__r.ContactRole.Contact.Email}"/>
            <apex:column headerValue="Role" value="{!Opportunity__r.ContactRole.Role}"/>
        </apex:pageBlockTable>
    </apex:pageBlock>

</apex:page>