hoc communications that the terminal have been performing furthermore the charging information includes charging data relating to any ad hoc communications that have involved communication via one or more support nodes the charging information is then transmitted to the accounting node in a second transfer step 907 an updated credit level is received from the accounting node and this information is then transmitted to the terminal if any charges related to the use of support nodes are included in the charging information this is established in a checking step 909 if there are charges related to the use of support nodes this information is obtained from the terminal in a reception step 911 and transmitted to the accounting node in a transmission step 913 whereupon the procedure ends the procedure that takes place in the accounting node as a result of the transfer during the charge transfer step 905 will now be described in a reception step 1001 the charging information is received from the access node this information is then processed and after identifying which user account or subscription to charge which is deduced from the received charging information that typically includes an identifier of the originating terminal and or user account the appropriate amount and account is charged in a charging step 1003 if any charges relating to usage of support nodes are detected in the received charging information in a checking step 1005 this support node usage information is obtained from the access node in a reception step 1007 and subsequently in a transmission step 1009 transmitted to the appropriate support node operator the support node operator to whom the support node usage charge data is transmitted is determined from the support node usage charge data in that it.