The tariff is applicable to Telsim Corporate subscribers. Each month, the subscriber can make free domestic voice calls (excluding special services and 444-number calls) up to the amount of free minutes included in the package for the specified monthly fees. The free calling privilege is only valid for domestic calls, and the free in-house calling limit is 5,000 minutes. When the All Network and In-House minutes are exhausted, the subscriber will be billed at the standard rates. The opportunity for free calls will begin from the moment of subscriber activation or the package transition date. For the Analog FCT device provided as a gift with the tariff, the subscriber can avail the service with an 18-month commitment. The Pool FCT system can be applied in tariffs of 5,000 minutes and beyond, with a minimum participation of 3 FCT devices. Unused free minutes do not carry over to the next month. Conference call service cannot be used in this tariff. Telsim reserves the right to warn, suspend usage if suspected of misuse or malicious intent, and unilaterally terminate the subscription if the subscriber is found to be using the service for purposes other than communication. The billing period is 60 seconds.