Represents the model number of a WTP. A WTP profile MUST include the WTP's model number, which reflects the number of Physical Layer (PHY) radios on the WTP. In this way, the creation of a WTP profile triggers the AC to automatically create the same number of WTP Virtual Radio Interfaces corresponding to the WTP's PHY radios without manual intervention. With the ifIndexes of WTP Virtual Radio Interfaces, the operator could configure and manage the WTP's PHY radios through the wireless binding MIB modules.