How you communicate and respect your customers is a touchy subject. Your employees who are assigned to call your customers’ buyers must be taught not to call them from an open speaker telephone. To be courteous, teach them to first call the customer and ask permission whether they can put the call on a speaker, but do so only if your customer approves of this before doing it. Tell your customer who is in the room if the door is open and reassure him that you can pick up the telephone if he asks for any private comments he may add. Most people do not like being on a conference call without first being asked and informed who is participating.
Be courteous and ask permission first each time you call them. Give them the option. Train all of your employees to do this so customers get the same excellent treatment from anyone with whom he speaks in your organization.