US 2024/0171273 A1 · OPTICAL NETWORK TEST INSTRUMENT INCLUDING TESTING FOR OPTICAL NETWORK UNIT AND OPTICAL LINE TERMINAL ASSIGNMENT

Abstract

A test instrument can be coupled to a test point in a passive optical network (PON) to perform an optical network unit (ONU) assignment determination test. The ONU assignment determination test determines a one-to-one assignment of an ONU to an optical line terminal (OLT) in the PON from a downstream signal received during an activation process. The test instrument can capture downstream signals for OLTs of different PONs simultaneously operating on the same optical distribution network to determine ONU assignment for the different PONs in a single test. The test instrument can be a termination mode device.

Claims20

Dependent claims

A test instrument connectable between an optical line terminal (OLT) and an optical network unit (ONU) of a passive optical network (PON) operating on an optical distribution network (ODN), the test instrument comprising:

a display;
an optical port to couple the test instrument to a test point in the ODN between the OLT and the ONU;
an optical receiver including a power meter to measure a power level of a downstream optical signal received via the optical port, wherein the downstream optical signal is transmitted from the OLT to the ONU via the ODN;
a capture circuit coupled to the optical receiver, and the capture circuit is to capture ONU information from the downstream optical signal, the ONU information including an OLT identifier of the OLT and a serial number of the ONU;
and
a processor executing an ONU assignment determination test, the processor to:
display instructions on the display to cause an activation process between the ONU and the OLT to be performed;
determine the ONU information captured by the capture circuit, wherein the capture circuit captures the ONU information during the activation process;
determine a PON type of the PON from the ONU information;
and
display the ONU information and the PON type on the display.

8 more elements

A test instrument connectable to an optical distribution network (ODN) having a plurality of different types of passive optical networks (PONs) simultaneously operating on the ODN, the test instrument comprising:

a display;
an optical port coupling the test instrument to a test point in the ODN between an optical line terminal (OLT) and an optical network unit (ONU);
an optical receiver to receive a downstream signal via the optical port, wherein the downstream signal is transmitted from the OLT to the ONU via the ODN;
a capture circuit coupled to the optical receiver, and the capture circuit is to capture ONU information from the downstream signal, the ONU information including an OLT identifier of the OLT and a serial number of the ONU;
and
a processor to:
display instructions on the display to cause an activation process between the ONU and the OLT to be performed;
determine the ONU information captured by the capture circuit, wherein the capture circuit captures the ONU information during the activation process;
determine, from the ONU information, a PON type of a PON of the plurality of PONs, wherein the PON includes the ONU and the OLT;
and
display the ONU information and the PON type on the display,
wherein the test instrument is a termination mode device, and the downstream signal received via the optical port is terminated at the test instrument instead of being passed through the test instrument to a downstream destination in the PON.

9 more elements

Dependencies are inferred from the claim text.

Optical network test instrument including testing for optical network unit and optical line terminal assignment

Life of this patent

Optical network test instrument including testing for optical network unit and optical line terminal assignment

Life of this patent

Abstract

Claims20