Abstract: An irrigation system joint couples first and second adjacent pipe sections that are coaxial along a central axis when aligned. The joint includes a first portion and a second portion. The first portion is for securing to the first pipe section and includes an upwardly facing hemispherical surface. The second portion is for securing to the second pipe section and includes a cavity that receives at least a portion of the hemispherical surface to form a contact line coincident with the central axis when the pipe sections are aligned.

Abstract: An irrigation system joint couples first and second adjacent pipe sections that are coaxial along a central axis when aligned. The joint comprises a first portion and a second portion. The first portion is for securing to the first pipe section and comprises an upwardly facing hemispherical surface. The second portion is for securing to the second pipe section and comprises a cavity that receives at least a portion of the hemispherical surface to form a contact line coincident with the central axis when the pipe sections are aligned.

Abstract: A mobile irrigation alignment system comprising a base mounted on a first span, a linkage system, and a control box. The linkage system includes a driven arm, drive arm, and control arm. The driven arm is pivotably connected to the base about a vertical axis. The drive arm is pivotably connected to the driven arm about a horizontal axis and includes a distal end configured to rest on an adjacent span. The control arm is linked to the driven arm. The control box determines lateral alignment between the spans based on the control arm as governed by the drive arm and driven arm. The drive arm is configured to retain an upright orientation relative to the driven arm regardless of torsional rotation between the spans so that the position of the control arm and hence the lateral alignment determination is not affected by the torsional rotation between the spans.

Abstract: An irrigation system includes support towers, pipeline spans, a joint pivotally connecting the pipeline spans, and a truss section. One pipeline span extends between the support towers along a central axis and includes a middle region, and the other is adjacent and coaxial with the first pipeline span when aligned. The truss section supports one of the pipeline spans and includes compression elements, truss structures, and tension elements. The compression elements extend downward from the pipeline span. The truss structures extend longitudinally along the pipeline span and are fixed relative to the compression elements. The tension elements extend diagonally downward from the pipeline span toward the middle region of the pipeline span and are fixed relative to the truss structures.

Abstract: An irrigation system includes support towers, pipeline spans, a joint pivotally connecting the pipeline spans, and a truss section. One pipeline span extends between the support towers along a central axis and includes a middle region, and the other is adjacent and coaxial with the first pipeline span when aligned. The truss section supports one of the pipeline spans and includes compression elements, truss structures, and tension elements. The compression elements extend downward from the pipeline span. The truss structures extend longitudinally along the pipeline span and are fixed relative to the compression elements. The tension elements extend diagonally downward from the pipeline span toward the middle region of the pipeline span and are fixed relative to the truss structures.

Abstract: An irrigation system joint couples first and second adjacent pipe sections that are coaxial along a central axis when aligned. The joint comprises a first portion and a second portion. The first portion is for securing to the first pipe section and comprises an upwardly facing hemispherical surface. The second portion is for securing to the second pipe section and comprises a cavity that receives at least a portion of the hemispherical surface to form a contact line coincident with the central axis when the pipe sections are aligned.

Abstract: A system and method for establishing a voice over Internet protocol link to a called party's mobile telephony device utilizes push notifications to activate a communications application on the called party's mobile telephony communications device. When a request to establish a voice over Internet protocol link to a mobile device is received by an incoming proxy server of a voice over Internet protocol service provider, the service provider causes a push notification to be sent to the mobile device. The called party can respond to the push notification in a manner that causes a communications application on the mobile device to be activated. Once the push notification has caused the communications application to activate, the communications application sends a special registration request to an outbound proxy server.

Abstract: A system and method for establishing a voice over Internet protocol link to a called party's mobile telephony device utilizes push notifications to activate a communications application on the called party's mobile telephony communications device. When a request to establish a voice over Internet protocol link to a mobile device is received by an incoming proxy server of a voice over Internet protocol service provider, the service provider causes a push notification to be sent to the mobile device. The called party can respond to the push notification in a manner that causes a communications application on the mobile device to be activated. Once the push notification has caused the communications application to activate, the communications application sends a special registration request to an outbound proxy server.

Abstract: A system and method for establishing a voice over Internet protocol link to a called party's mobile telephony device utilizes push notifications to activate a communications application on the called party's mobile telephony communications device. When a request to establish a voice over Internet protocol link to a mobile device is received by an incoming proxy server of a voice over Internet protocol service provider, the service provider causes a push notification to be sent to the mobile device. The called party can respond to the push notification in a manner that causes a communications application on the mobile device to be activated. Once the push notification has caused the communications application to activate, the communications application sends a special registration request to an outbound proxy server.

Abstract: A IP telephony service allows customers to form user groups. Each user group can include multiple members, each of whom have their own telephony device. When a member of a user group sends an outgoing communication from one of the telephony devices associated with the user group, the service obtains communication handling instructions for the user group. The outgoing communication is then processed in accordance with the handling instructions. This could include sending copies of the outgoing communication to the telephony devices of other members of the user group. This could also include sending the outgoing communication with an origination identifier associated with the user group, rather than an origination identifier associated with the member's telephony device.

Abstract: Systems and methods for preventing fraud in an IP based telephony system include noting when an IP based telephony device sent to a new customer is not installed and registered with the system. If a new customer never attempts to register a device which was sent to the new customer, the system will assume that the new customer submitted false or erroneous address information. A new customer is prevented from taking any actions that would result in new charges until the new customer has registered an IP device sent to the new customer. Likewise, the system will act to prevent a phone verification service from reaching a new customer at his newly assigned telephone number until after the new customer has registered an IP based telephony device sent to the new customer.

Abstract: A IP telephony service allows customers to form user groups. Each user group can include multiple members, each of whom have their own telephony device. A group identifier, which could be a telephone number, is assigned to each user group. As a result, a single telephony device belonging to a member of a user group can be associated with its own unique telephone number, and the telephone number used as the group identifier. The system allows the user to select which of multiple telephone numbers associated with his telephony device are to be used as the originating telephone number when an outgoing telephone call or an outgoing message is sent.

Abstract: A IP telephony service allows customers to form user groups. Each user group can include multiple members, each of whom have their own telephony device. Each user group is assigned a unique group identifier, which can be a telephone number. As a result, a single telephony device belonging to a member of a user group can be associated with its own unique telephone number, and the telephone number of the user group. This also means that a member's telephony device could be associated with multiple different billing accounts. The system allows a user to select which of multiple different billing accounts that are associated with his telephony device are to be billed for outgoing communications.

Abstract: A IP telephony service allows customers to form user groups. Each user group can include multiple members, each of whom have their own telephony device. Each user group is assigned a unique group identifier, which can be a telephone number. As a result, a single telephony device belonging to a member of a user group can be associated with its own unique telephone number, and the telephone number of the user group. This also means that a member's telephony device could be associated with multiple different billing accounts. The system allows a user to select which of multiple different billing accounts that are associated with his telephony device are to be billed for outgoing communications.

Abstract: Method, system, and computer readable medium for providing an identifier for a caller identifier (ID) function when processing a communication request between a calling party and a called party in a communication network is described. In some examples, an initial identifier for the caller ID function associated with the calling party is received. A determination is made if the calling party has a virtual identifier configured in the communication network. A determination is made if the called party has a predefined identifier associated with the calling party configured in the communication network. The initial identifier is replaced with a terminating identifier based on configuration of the virtual identifier and the predefined identifier in the communication network.

Abstract: A system and method for establishing a voice over Internet protocol link to a called party's mobile telephony device utilizes push notifications to activate a communications application on the called party's mobile telephony communications device. When a request to establish a voice over Internet protocol link to a mobile device is received by an incoming proxy server of a voice over Internet protocol service provider, the service provider causes a push notification to be sent to the mobile device. The called party can respond to the push notification in a manner that causes a communications application on the mobile device to be activated. Once the push notification has caused the communications application to activate, the communications application sends a special registration request to an outbound proxy server.

Abstract: Systems and methods for establishing a communications channel between a first user and a second user through a first communications system make use of contact information obtained from a second communications system. The contact information obtained from the second communications system is stored in a cross-reference database maintained on the first communications system. The information could be obtained by having the first communications system access the second communications system using the credentials of a user of the second communications system to obtain contact information stored on the second communications system for the user. The information in the cross-reference database allows the first communications system to determine a non-publically switched telephony network (PSTN) identifier of a telephony device associated with the second user. This identifier is then used to establish a communications channel between the first user and the second user.

Abstract: Method, system, and computer readable medium for providing an identifier for a caller identifier (ID) function when processing a communication request between a calling party and a called party in a communication network is described. In some examples, an initial identifier for the caller ID function associated with the calling party is received. A determination is made if the calling party has a virtual identifier configured in the communication network. A determination is made if the called party has a predefined identifier associated with the calling party configured in the communication network. The initial identifier is replaced with a terminating identifier based on configuration of the virtual identifier and the predefined identifier in the communication network.

Abstract: A IP telephony service allows customers to form user groups. Each user group can include multiple telephony devices that are associated with one or more users. One or more group identifiers would be associated with each user group. When an incoming communication is directed to a user group, a group identifier is used to retrieve a list of the members of the group, or a list of devices that correspond to the members of the user group. The communication is then sent to one or more members of the group, or to one or more of the devices that correspond to members of the user group. Handling preferences may determine how the incoming communication is delivered. In some instances, the incoming communication could be a telephone call. In other instances, the incoming communication could be a SMS message or an instant message.

Abstract: A IP telephony service allows customers to form user groups. A user group is established by collecting a plurality of identifiers that are associated with members of a group, and associating the member identifiers with a group identifier. The member identifiers could be telephone numbers of telephony devices for each of the members, or device IDs of IP telephony devices for members of the group. The group identifier could be any type of identifier, and in some instances, the group identifier could be a telephone number.