Alvarion BreezeAccess II System Manual page 250

BreezeACCESS Version 4.5 Operations and Administration
2-120
" Foreign AC Ring voltage (mV)
" Line State Test Result: Result Not available/On-Hook/Phone
Present+On-Hook/Off-Hook/Short Circuit
" Line REN Load (REN)
" Apparent Capacitive Load.
Manual Revision: 1.0