Abstract: An open hole tieback completion pressure activated backpressure valve including a housing, a flapper articulated to the housing, a lock out sleeve axially movably disposed within the housing and operatively disposed in relation to the flapper, a seat operatively connected to the sleeve, and a profile that locks the sleeve in place after axial movement of the sleeve. A borehole system including an intervention-less closed lower completion system having delayed opening activation valves with a wellbore isolation valve uphole of a float shoe, and a casing tie-back completion including the valve. A method for completing an open hole including landing an object on a seat of an open hole tieback completion pressure activated backpressure valve, locking out the valve, releasing the object, and landing the same object on a well isolation valve of a lower completion.

Abstract: A method includes designing a lower completion string for a multi-stage hydraulic fracturing job for a wellbore drilled into a subterranean zone. The lower completion string includes a plurality of stages and a plurality of packers configured to isolate each of the stages. Each stage of the plurality of stages includes a respective tubular stage assembly, and each stage is configured to be placed within a respective one of a plurality of frac intervals of the wellbore defined by the plurality of packers. Designing the lower completion string includes, for each stage of the plurality of stages, receiving a measured hole diameter of the respective one of the plurality of frac intervals and performing an axial safety factor analysis of the stage.

Abstract: A method includes designing a lower completion string for a multi-stage hydraulic fracturing job for a wellbore drilled into a subterranean zone. The lower completion string includes a plurality of stages and a plurality of packers configured to isolate each of the stages. Each stage of the plurality of stages includes a respective tubular stage assembly, and each stage is configured to be placed within a respective one of a plurality of frac intervals of the wellbore defined by the plurality of packers. Designing the lower completion string includes, for each stage of the plurality of stages, receiving a measured hole diameter of the respective one of the plurality of frac intervals and performing an axial safety factor analysis of the stage.

Abstract: A system, a method, and a computer program product for coordinating communication of data packets between a user device and a core network are disclosed. The system includes a first device communicatively coupled to the core network, a second device communicatively coupled to the first device. The second device receives signals from the user device. The first device and the second device share at least one functionality associated with layer 2 of a long term evolution radio access network.

Abstract: A system, a method, and a computer program product for coordinating communication of data packets between a user device and a core network are disclosed. The system includes a first device communicatively coupled to the core network, a second device communicatively coupled to the first device. The second device receives signals from the user device. The first device and the second device share at least one functionality associated with layer 2 of a long term evolution radio access network.

Abstract: A system, a method, and a computer program product for coordinating communication of data packets between a user device and a core network are disclosed. The system includes a first device communicatively coupled to the core network, a second device communicatively coupled to the first device. The second device receives signals from the user device. The first device and the second device share at least one functionality associated with layer 2 of a long term evolution radio access network.

Abstract: A system, a method, and a computer program product for coordinating communication of data packets between a user device and a core network are disclosed. The system includes a first device communicatively coupled to the core network, a second device communicatively coupled to the first device. The second device receives signals from the user device. The first device and the second device share at least one functionality associated with layer 2 of a long term evolution radio access network.

Abstract: A system, a method, and a computer program product for coordinating communication of data packets between a user device and a core network are disclosed. The system includes a first device communicatively coupled to the core network, a second device communicatively coupled to the first device. The second device receives signals from the user device. The first device and the second device share at least one functionality associated with layer 2 of a long term evolution radio access network.

Abstract: A system, a method, and a computer program product for coordinating communication of data packets between a user device and a core network are disclosed. The system includes a first device communicatively coupled to the core network, a second device communicatively coupled to the first device. The second device receives signals from the user device. The first device and the second device share at least one functionality associated with layer 2 of a long term evolution radio access network.

Abstract: A data and voice communication system includes communication between a line card and an accelerator card. Voice, data, and control traffic is received from the line card and is transmitted to the accelerator card via a physical link having separate voice, data, and control logical channels. The separate voice, data, and control logical channels are represented by labeled data packets.

Abstract: A method includes receiving information at an interface circuit and providing the information from the interface circuit to a processing circuit through a direct communications path between the interface circuit and a processing circuit, which processes the information received from the interface circuit. The method further includes providing the information from the interface circuit to the processing circuit via a crosspoint switch in response to a failure of the direct communications path, wherein the direct communication does not pass through the crosspoint switch.

Abstract: A data and voice communication system includes communication between a line card and an accelerator card. Voice, data, and control traffic is received from the line card and is transmitted to the accelerator card via a physical link having separate voice, data, and control logical channels. The separate voice, data, and control logical channels are represented by labeled data packets.

Abstract: A data and voice communication system includes communication between a line card and an accelerator card. Voice, data, and control traffic is received from the line card and is transmitted to the accelerator card via a physical link having separate voice, data, and control logical channels. The separate voice, data, and control logical channels are represented by labeled data packets.

Abstract: A method includes receiving information at an interface circuit and providing the information from the interface circuit to a processing circuit through a direct communications path between the interface circuit and a processing circuit, which processes the information received from the interface circuit. The method further includes providing the information from the interface circuit to the processing circuit via a crosspoint switch in response to a failure of the direct communications path, wherein the direct communication does not pass through the crosspoint switch.

Abstract: Apparatus is used in communicating in a data and voice communication system. The apparatus includes a line card and a crosspoint switch in communication with the line card. The apparatus also includes an accelerator card in communication with the line card and the crosspoint switch. The crosspoint switch is configured to provide a redundant communications path between the line card and the accelerator card.

Abstract: Apparatus is used in communicating in a data and voice communication system. The apparatus includes a line card and a crosspoint switch in communication with the line card. The apparatus also includes an accelerator card in communication with the line card and the crosspoint switch. The crosspoint switch is configured to provide a redundant communications path between the line card and the accelerator card.

Abstract: A data and voice communication system includes communication between a line card and an accelerator card. Voice, data, and control traffic is received from the line card and is transmitted to the accelerator card via a physical link having separate voice, data, and control logical channels. The separate voice, data, and control logical channels are represented by labeled data packets.

Abstract: Apparatus is used in communicating in a data and voice communication system. The apparatus includes a line card and a crosspoint switch in communication with the line card. The apparatus also includes an accelerator card in communication with the line card and the crosspoint switch. The crosspoint switch is configured to provide a redundant communications path between the line card and the accelerator card.

Abstract: A data and voice communication system includes communication between a line card and an accelerator card. Voice, data, and control traffic is received from the line card and is transmitted to the accelerator card via a physical link having separate voice, data, and control logical channels. The separate voice, data, and control logical channels are represented by labeled data packets.

Abstract: Apparatus is used in communicating in a data and voice communication system. The apparatus includes a line card and a crosspoint switch in communication with the line card. The apparatus also includes an accelerator card in communication with the line card and the crosspoint switch. The crosspoint switch is configured to provide a redundant communications path between the line card and the accelerator card.