Abstract: Multilayer structures containing porosified or electropolished layers of indium phosphide or gallium arsenide are described. Further disclosed are methods for preparing and using such multilayer structures, for example, in vertical cavity surface emitting lasers (VCSELs).

Abstract: Methods and systems for in-situ and selective area etching of surfaces or layers, and high-speed growth of gallium nitride (GaN), by organometallic chlorine (Cl) precursors, are described herein. In one aspect, a method can include exposing a GaN layer or surface to an organometallic Cl precursor within a reactor under conditions sufficient to etch the layer or surface, thereby etching the GaN layer or surface. In another aspect, a method of growing GaN can include inputting a set of reactants comprising at least trimethylgallium (TMGa) and anunonia into an OMVPE reactor; inputting an organometallic Cl precursor into the OMVPE reactor; and reacting the Cl precursor with the TM Ga and with the NH3 to deposit GaN by organometallic vapor phase epitaxy.

Abstract: Provided are a network operation support system and a network device management method, belonging to the technical field of communications. The system uses a micro-service architecture realized based on a container, and the system itself has a good expansibility and availability, and supports automation and layout in a cloud environment. In addition, the system also uses a main database to synchronously store operating data of various micro-services for unified maintenance of the data, thereby improving the analysis efficiency of the system.

Abstract: A hybrid unified communications (UC) cloud system includes a global UC virtual data center and a plurality of regional UC virtual data centers (VDCs). Each regional VDC includes a regional system manager that manages a set of regional UC resources. Associated endpoint devices operate in at least one respective multi-tenant regional cloud and to employ corresponding regional UC resources thereof, operating in at least one service cluster of the respective multi-tenant regional cloud, to communicate real-time media traffic with respect to the associated endpoint devices. A regional resource manager provides status information to the regional system manager, based on utilization of resources, to control scaling of the regional UC resources responsive to the status information. The global UC virtual data center includes a global system manager to manage the regional UC VDCs and coordinates orchestration of UC resources between and/or among the regional UC VDCs.

Abstract: Provided are a network operation support system and a network device management method, belonging to the technical field of communications. The system uses a micro-service architecture realized based on a container, and the system itself has a good expansibility and availability, and supports automation and layout in a cloud environment. In addition, the system also uses a main database to synchronously store operating data of various micro-services for unified maintenance of the data, thereby improving the analysis efficiency of the system.

Abstract: A hybrid unified communications (UC) cloud system includes a global UC virtual data center and a plurality of regional UC virtual data centers (VDCs). Each regional VDC includes a regional system manager that manages a set of regional UC resources. Associated endpoint devices operate in at least one respective multi-tenant regional cloud and to employ corresponding regional UC resources thereof, operating in at least one service cluster of the respective multi-tenant regional cloud, to communicate real-time media traffic with respect to the associated endpoint devices. A regional resource manager provides status information to the regional system manager, based on utilization of resources, to control scaling of the regional UC resources responsive to the status information. The global UC virtual data center includes a global system manager to manage the regional UC VDCs and coordinates orchestration of UC resources between and/or among the regional UC VDCs.

Abstract: A hybrid unified communications (UC) cloud system includes a global UC virtual data center and a plurality of regional UC virtual data centers (VDCs). Each regional VDC includes a regional system manager that manages a set of regional UC resources. Associated endpoint devices operate in at least one respective multi-tenant regional cloud and to employ corresponding regional UC resources thereof, operating in at least one service cluster of the respective multi-tenant regional cloud, to communicate real-time media traffic with respect to the associated endpoint devices. A regional resource manager provides status information to the regional system manager, based on utilization of resources, to control scaling of the regional UC resources responsive to the status information. The global UC virtual data center includes a global system manager to manage the regional UC VDCs and coordinates orchestration of UC resources between and/or among the regional UC VDCs.

Abstract: A system and method for management of network monitoring information includes a non-transient memory and one or more processors coupled to the non-transient memory and configured to read instructions from the non-transient memory to cause the information handling system to perform operations, The operations include collecting real-time network monitoring information from one or more network switching units, storing the collected real-time network monitoring information in a data storage system using a first column family, periodically aggregating the collected real-time network monitoring information to generate corresponding history information, storing the aggregated history information in the data storage system using a second column family different from the first column family, retrieving information from the data storage system based on one or more first queries, the stored real-time network monitoring information, and the stored aggregated history information, and providing the retrieved information fo

Abstract: A hybrid unified communications (UC) cloud system includes a global UC virtual data center and a plurality of regional UC virtual data centers (VDCs). Each regional VDC includes a regional system manager that manages a set of regional UC resources. Associated endpoint devices operate in at least one respective multi-tenant regional cloud and to employ corresponding regional UC resources thereof, operating in at least one service cluster of the respective multi-tenant regional cloud, to communicate real-time media traffic with respect to the associated endpoint devices. A regional resource manager provides status information to the regional system manager, based on utilization of resources, to control scaling of the regional UC resources responsive to the status information. The global UC virtual data center includes a global system manager to manage the regional UC VDCs and coordinates orchestration of UC resources between and/or among the regional UC VDCs.

Abstract: A service defined network for hybrid unified communications receives high-level service requests for communication between geographic regions and/or enterprises. The service requests are processed by a resource provisioning system to provision uniform communication resources of the service defined network for fulfilling the service request. An order is issued to a network communication manager for reserving a specified network bandwidth for fulfilling the service request. The network communication manager allocates data flows for the specified network bandwidth between the regions and/or enterprises. QoS provisioning and monitoring are provided using a unified communications region-based service level API of the service defined network (not a SDN flow-level API).

Abstract: A system and method for management of network monitoring information includes a non-transient memory and one or more processors coupled to the non-transient memory and configured to read instructions from the non-transient memory to cause the information handling system to perform operations, The operations include collecting real-time network monitoring information from one or more network switching units, storing the collected real-time network monitoring information in a data storage system using a first column family, periodically aggregating the collected real-time network monitoring information to generate corresponding history information, storing the aggregated history information in the data storage system using a second column family different from the first column family, retrieving information from the data storage system based on one or more first queries, the stored real-time network monitoring information, and the stored aggregated history information, and providing the retrieved information fo

Abstract: A system and method for management of network monitoring information includes a data collector for collecting real-time network information from network switching units, an aggregator for periodically aggregating the collected real-time network information and generating corresponding history information, a preprocessor for periodically determining results for first queries based on the collected real-time network information and the history information, a data storage system, and a data retriever for retrieving information from the data storage system. The data storage system stores the collected real-time network information, the aggregated history information, and the preprocessed results of the first queries. The data storage system also periodically purges the stored real-time information based on a first time-to-live value and the stored history information based on a second time-to-live value.

Abstract: A system and method for management of network monitoring information includes a data collector for collecting real-time network information from network switching units, an aggregator for periodically aggregating the collected real-time network information and generating corresponding history information, a preprocessor for periodically determining results for first queries based on the collected real-time network information and the history information, a data storage system, and a data retriever for retrieving information from the data storage system. The data storage system stores the collected real-time network information, the aggregated history information, and the preprocessed results of the first queries. The data storage system also periodically purges the stored real-time information based on a first time-to-live value and the stored history information based on a second time-to-live value.

Abstract: A system for network management incorporates Presence and Instant messaging (PIM) techniques. A presence service is used to support the presence discovery of network elements as well as the resources, and services provided by the network elements. An instant messaging service is used for communication between the Element Management System (EMS) and the network elements to support FACPS functionalities. XML is employed as the instant messaging format for the communication between EMS and network elements and adaptors to SNMP, CMIP, and other existing network management protocols are provided. The presence service also allows the presence of NMS, EMS, and SMS to be transparent. Use of buddy group PIM techniques to implement the management relationship between EMS and network elements, and relationship between EMS and NMS is employed. The PIM provides monitoring of servers, network elements, and resources.