6 — ONT management using an ONT interface
Alcatel-Lucent 7330/7302 ISAM FTTN R04.02.42a March 2011 6-35
3FE 54199 AAAA TCZZA Edition 01 ONT Product Information Guide
Procedures using CLI interface for Package C ONTs
Not applicable.
Procedures using butt set
Not applicable.
6.10 Checking ranging state of an ONT
The ranging state indicates the operational mode of the ONT as per ITU 984.3.
Table 6-8 describes the possible ranging states for an ONT.
Table 6-8 Ranging states of an ONT
This section shows you how to retrieve the ranging state of an ONT.
Prerequisites
The prerequisites are:
• The user access level of the ONT is read only or read-write.
• The steps to access the interface are completed.
• See Procedure 6-1 for HTTP interface using the first Ethernet port.
• See Procedure 6-4 for CLI interface using the first Ethernet port.
Ranging state Description
Initial state The ONT is on, but is not connected to the GPON.
Standby state The ONT is waiting for network parameters, such as a preassigned
equalization delay, or the number of preamble bytes to use in the
upstream direction.
Serial number state The ONT is waiting for a serial number request. When the request
is received, the ONT registers.
Ranging state The ONT is waiting for a ranging request. Based on the round-trip
delay (RTD) time, the P-OLT calculates the ONT’s equalization
delay.
Operation state The ONT is ranged. In the operation state, the upstream frames
will be synchronized together between the ONTs on the PON.
Also, the upstream transmissions will arrive separately, each one
in its correct location within the frame. In this state, the ONT can
be halted by the P-OLT, to implement serial number or ranging
processes with other ONTs.
Popup state The ONT enters the popup state from the operation state after
detecting an alarm, such as loss of signal (LOS) or loss of frame
(LOF). In the pop-up state, the ONT stops transmitting in the
upstream direction.
Emergency stop state The ONT is in an emergency stop state, and does not receive and
transmit data until the P-OLT enables it.
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