Hardware Technical Reference Manual
Note 1: Approximately 5.17 miles (8.28 km) over 22-gauge cable with 300 ohm set, or
3.25 miles (5.19 km) over 24-gauge cable with 300 ohm set, or
2 miles (3.2 km) over 26-gauge with 300 ohm set. -- Minimum 40 Vrms
Note 2: Used for sending CLID.
Note 3: DC voltage method and CLASS message.
Note 4: The MWI signal provided by the ASU II and AX is intended to be used with phones that support
90V signalling.
Note 5: The line circuit will switch between short loop (24V feed) and long loop (48V feed) at a total
loop impedance of 700 ohms (including the set). On-hook feed is always 48V.
Table 15: ONS Station Line Circuits (continued)
Attribute AX/ASU II line cards
Page 2 of 2