minutes Number of minutes ahead (+) or behind (-) UMT of the local time zone in which the service is consumed. IMSI MIN MDN RFC 3580, Section 3.21 RFC 3580, Section 3.20 ISO 3166-2:1998 UTM OSGB Lat/Long RFC 2865 802.11a 802.11b 802.11G Ethernet Bytes Seconds Minutes Hours Days Sessions/Connections Incoming Volume Outgoing Volume Total Volume Duration Based Charge Event Based Charge Fixed (one-off) Charge Content Duration Based Charge Explicit Logoff Idle Timeout Session Timeout Admin Reset NAS Error NAS Request NAS Reboot ISO4217:2001