ONT-2-E4xxxi Multi-service Residential Gateway Series Hardware Installation Guide
TM 87-10879 Rev. A
UNRELEASED DRAFT
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lephony features, such as silence suppression, voice activity detection, comfort noise generation, echo can-
cellation, call waiting, call transferring, and Caller ID.
A broad range of codecs is supported. FAX Transmission with T.38 fax relay and G.711 pass-through are
also supported modes of operation.
The RJ-11 POTS (Standard Telephone) ports support a REN (Ringer Equivalency Number) load of four (4).
3.9
RF Overlay
The ONT-2-E4021i and ONT-2-E4021iWn have RF Overlay capability. These two ONTs support an RF port
for delivery of a full spectrum of broadcast RF video services over 75 Ohm RG-6 coaxial cable.
3.10
Power
The EPON Multi-service Gateway ONT is shipped with an AC/DC power adapter that accepts a rated input
voltage of 100-240 volts AC and provides an output voltage of 12 VDC to the ONT. The EPON Multi-service
Gateway ONT has a minimum input current rating of 1.5 AMPS. The power adapter (also referred to as
power supply) shipped with the ONT is equipped with an AC plug that is suitable for the country or region of
sale.
The EPON Multi-service Gateway ONT supports a backup power connector in the rear panel of the ONT that
is marked as a “Backup Power” connector. The backup power connector is an 8-pin connector. It is intended
for a backup power supply with alarm inputs. See Figure 4 for a closeup of the Backup Power connector in
the rear panel of the ONT.
Figure 4 Rear Backup Power Connector
The EPON Multi-service Gateway ONT also supports an additional backup power connector on the side.
This backup power connector is reserved for a future feature. See Figure 5 for a closeup of the side backup
power connector.
Figure 5 Side Backup Power Connector
Note