Subscription fee is calculated like a fee for the use of services included in the invoice for the previous month.
When you enter into a new LMT services agreement, the subscription fee is calculated on the basis of the number of days remaining until the end of the month.
Fixed monthly charge is a subscription fee. It is calculated and applied like a subscription fee.
Minimum monthly charge is the smallest LMT charge for services. The minimum monthly charge is listed in the invoice, if the total amount calculated for the use of services is smaller than the minimum monthly charge. If the amount calculated for the services exceeds the minimum charge, your invoice lists all of these services.