1-6.2 Communication Effective, two-way communication is essential to ISE. Postal Service needs must be defined in enough detail that suppliers can respond effectively, but needs should also be general enough to allow suppliers to propose alternative solutions. The following will help foster the necessary business relationship: Work with suppliers as equals and stakeholders. Avoid an “us vs. them” mentality. When necessary, provide a guarantee of confidentiality. Speak in terms of what the Postal Service and the supplier can achieve together, rather than what the supplier can do for the Postal Service. Maintain flexibility and openness about new approaches.