A method for broadcasting channel information, available channel and data rate of a base station in a CDMA communication system. The bleaching steps have wash apparatuses for the pulp arranged after the first and second bleaching steps. The base unit is fixed to the installation frame in a state that a portion of the base unit extending by a specified height from a bottom wall of the base unit to the attachment member is embedded in the base receiving recess of the installation frame. The router compares the hostname with the information in the cache database. In some embodiments, the natural chirp of a DBR laser diode when driven by pulsed current is used to broaden the linewidth of the laser output, while adjusting the peak current andor the pulse duration to obtain the desired linewidth.