This counter tracks the cumulative total number of SVCs (switched virtual circuits) that have ever been established on this ATM port since the counter last reset, per the description. It is the lifetime call-volume gauge for the port's Q.93b signaling load, so an admin watching capacity or licensing (many ATM switches of this era licensed by connection count) would trend this value over time to see if call volume on this trunk is growing toward a provisioned limit. For example, a port handling voice-over-ATM trunking might show this counter climbing by several thousand SVCs per day during business hours.