The present invention relates to a chemical mechanical polishing conditioner and manufacturing methods thereof. A number of discrete posts span the slot between pressure and suction sidewall portions. At least one of the routing blocks serves, when the low speed line signals accommodated therein do not fully occupy the predetermined capacity, as a master block which accommodates at least one of the other routing blocks as a slave block in order to accommodate the low speed line signals accommodated in the other routing block. As such, the network usage monitoring module can monitor the usage of a number of network users who are attempting to access various network services provided via the gateway device.