<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def _conv_tel_list(tel_list, entry):
 """Converts to Abook phone types"""

        for tel in tel_list:
            if not hasattr(tel, 'TYPE_param'):
                entry['other'] = tel.value
            elif tel.TYPE_param.lower() == 'home':
                entry['phone'] = tel.value
            elif tel.TYPE_param.lower() == 'work':
                entry['workphone'] = tel.value
            elif tel.TYPE_param.lower() == 'cell':
                entry['mobile'] = tel.value