Indication
Color
LED
Power supply is abnormal
Red (Solid)
FAULT
Power supply is normal
OFF
Table 3: Port LEDs
Indication
Color
LED
PON port
ONT is registered on the OLT.
Green (solid)
REG
No ONT is registered on the OLT.
OFF
OLT is receiving and transmitting
data
Green (blinking)
ACT
OLT is not receiving and
transmitting data
OFF
1 G port and 10 G port
Connection is established
Green (solid)
LINK
No connection
OFF
OLT is receiving and transmitting
data
Green (blinking)
ACT
OLT is not receiving and
transmitting data
OFF
Cisco Catalyst PON Series ONT Overview
The Cisco Catalyst PON Series ONT is an optical modem device that is integrated with powerful interoperability
and high performance. (An ONT is also referred to as Optical Network Unit [ONU]. ONT is an ITU-T term,
while ONU is an IEEE term.) The Cisco Catalyst PON ONT is located at an end user’s premises. The Cisco
Catalyst PON Series ONT connects to the PON network on one side and accesses the end user's devices in
FTTH, or FTTO, or FTTC service delivery architecture on the other side. The Cisco Catalyst PON Series
ONT communicates between the Cisco Catalyst PON Series OLT and the end-user devices.
In the upstream direction, a Cisco Catalyst PON Series ONT is connected to the optical splitter through the
PON port. The data, voice, and video signals from end user's devices are sent to the Cisco Catalyst PON Series
ONT. Using the uplink ports on the Cisco Catalyst PON Series ONT, these signals are converted into electrical
signals and transmitted over optical fibers to the Cisco Catalyst PON Series OLT. In the downstream direction,
the Cisco Catalyst PON Series ONT is connected to various end user devices using the 1 G ports and provides
triple-play services such as high-speed internet (HSI), voice (VoIP), and video (IPTV and RF overlay).
Cisco Catalyst PON Series Switches Hardware Installation Guide
7
Introduction to Passive Optical Network
Cisco Catalyst PON Series ONT Overview
