Fault isolation constructs for POTS emulation service on an FTTx platform
AssigneeAlcatel Lucent
InventorSudheer Dharanikota
Life of this patent
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Abstract
Fiber to the user (“FTTU’), fiber to the curb (“FTTC”), fiber to the node (“FTTN”), and fiber to the premise (“FTTP”) platforms (referred to herein as “FTTx”), require plain old telephony service (“POTS”) emulation using voice over IP (“VoIP”) signaling and bearer channels. Such a POTS emulation service requires emulation of existing fault isolation mechanisms in POTS and also must be extended to the topologies in the VoIP environment. The present invention is adapted to provide POTS emulation using existing fault isolation mechanisms in POTS and also provides POTS emulation for topologies in VoIP environments in the scope of FTTx.
Claims18
A method for emulating Plain Old Telephony Service (POTS) using Voice over Internet Protocol (VoIP) signaling channels and bearer channels, comprising:
- emulating fault isolation mechanisms in POTS;
- emulating a Pull Break (P/B) test;
- and
- extending fault isolation mechanisms to topologies in a VoIP environment which comprises:
- receiving a signaling and media continuity testing command including a destination telephone number from a control channel of an optical line termination (OLT) responsive to a user phone losing communication service;
- transmitting the signaling and media continuity testing command to a specific optical network termination (ONT) device being tested to determine the ONT's session initiation protocol (SIP) communication capability;
- transmitting a message to a session initiation protocol (SIP) proxy to confirm the SIP proxy is reachable via the ONT;
- tracing a path to the SIP proxy via a tracing command sent to the SIP proxy to isolate the reachability of the SIP proxy;
- executing a test call via the ONT by dialing the destination telephone number through the SIP proxy;
- completing the call;
- and
- transmitting the results of the test call to a requesting entity.
A non-transitory computer readable storage medium comprising instructions that when executed by a processor, cause the processor to perform:
- tracing a call end-to-end in a Voice over Internet Protocol (VoIP) environment on an Optical Network Terminal (ONT) VoIP stack;
- and
- performing Session Initiation Protocol (SIP) signaling, fault isolation testing and media continuity testing on at least a portion of the call;
- which comprises:
- emulating a Pull Break (P/B) test;
- receiving a signaling and media continuity testing command including a destination telephone number from a control channel of an optical line termination (OLT) responsive to a user phone losing communication service;
- transmitting the signaling and media continuity testing command to a specific optical network termination (ONT) device being tested to determine the ONT's session initiation protocol (SIP) communication capability;
- transmitting a message to a session initiation protocol (SIP) proxy to confirm the SIP proxy is reachable via the ONT;
- tracing a path to the SIP proxy via a tracing command sent to the SIP proxy to isolate the reachability of the SIP proxy;
- executing a test call by dialing the destination telephone number through the SIP proxy via the ONT;
- completing the call;
- and
- transmitting the results of the test call to a requesting entity.
A system configured to emulate Plain Old Telephony Service (POTS), comprising:
- a session initiation protocol (SIP) proxy;
- an optical line termination (OLT);
- and
- an optical network termination (ONT) configured to
- emulate a Pull Break (P/B) test;
- receive a request for signaling and media continuity testing, the request including a destination phone number, the request received from a control channel on the optical line termination (OLT), responsive to a user phone losing communication service,
- transmit the signaling and media continuity testing command to a specific optical network termination (ONT) device being tested to determine the ONT's session initiation protocol (SIP) communication capability,
- transmit a message to the SIP proxy to confirm the SIP proxy is reachable,
- trace a path to the SIP proxy via a tracing command sent to the SIP proxy to isolate the reachability of the SIP proxy, and wherein
- the session initiation protocol (SIP) proxy is configured to
- invoke a test case that executes a call by dialing the telephone number through the SIP proxy to the destination phone number, and
- complete the call and transmit the results of the test call to a requesting entity.
Dependencies are inferred from the claim text.