行业规定，律师和他人的接触

http://www.americanbar.org/groups/professional_responsibility/publications/model_rules_of_professional_conduct/rule_4_2_communication_with_person_represented_by_counsel.html

Transactions With Persons Other Than Clients
Rule 4.2 Communication With Person Represented By Counsel
In representing a client, a lawyer shall not communicate about the subject of the representation with a person the lawyer knows to be represented by another lawyer in the matter, unless the lawyer has the consent of the other lawyer or is authorized to do so by law or a court order.

甲方律师可以和乙方律师联系，甲方客户可以和乙方客户联系，但是甲/乙方律师不能直接和乙/甲方客户直接联系，除非双方律师同意这样的联系。