session management in an enterprise comunication ... - Genband

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SESSION MANAGEMENT IN AN ENTERPRISE COMUNICATION NETWORK • Alarms and Events affecting the service • Centralized Provisioning and maintenance • Generating reports for business and network planning tasks • SDR management The GENView RSM also includes the following task-specific modules: • Route Analysis Module (RAM) – the RAM running on the GENView RSM server processes SDRs in real-time from multiple SBC platforms and is used to determine QoS. This is the fundamental component by which the RSM Agent communicates with the SBC. The RAM provides a basic set of engineering reports including the Answer Seizure Ratio (ASR), listing of 200 most recent calls, and enables custom reports to be specified. • Events and Statistics Module (ESM) – the ESM facilitates alarming which can be syslog based or SDR based. SBC log files are parsed for specific error codes to trigger alarms. Similarly, SDR information (e.g. error response, ASR threshold, total number of minutes, etc.) is used to assess event and alarm generation. Action taken includes logging the error to a file, generating an email to the network administrator, or blocking a particular endpoint via the Adaptive Routing Module. • Adaptive Routing Module (ARM) – the ARM provides a set of actions to change the route table configuration on the SBC. The ARM provides a mechanism to disable calls at endpoint ingress or egress based on alarm conditions and network capacity states. • Business Analysis Module (BAM) – the BAM processes SDRs from the RSM database to produce ondemand business reports. These include usage and cost by route, sector, etc. The RSM provides hooks to external billing and accounting systems via its Web Services (WSDL) interface. • Web Interface Module (WIM) – the WIM provides user access via a web interface for which the user is authorized. Subscribers may be set up with portal access for self-care purposes, controlled and secure in their group or department. In cases where the RSM is shared between multiple groups, known as partitioning, the WIM restricts user views to their respective partitions. Note that there is no limit to the number of user per partition or number of access lists. • Least Cost Routing Module (LCR) – LCR generates routing rules based on BAM rating information. The LCRgenerated routes are then used to reconfigure the route tables in the SBC to effect the required changes. • Third Party SDR Support Module (TCS) – the TCS enables importing of third-party SDRs into the RSM for reporting/rating and exporting to third-party database directly from the RSM. Under partitioned conditions, only SDRs that belong to that partition are streamed. RSM Reports The reports generated by the GENView RSM enable network administrators to monitor system activity in real-time for technical and business purposes. Engineering reports display the ASR in various formats, or a list of the last 200 calls can be displayed. Up to 11 types of reports can be generated which are colorcoded based upon ASR percentages, and a graph generated of ASR against time. Calls are grouped and color-coded into abandoned, busy, error or normal status categories with each individual call and detailed SDR information available. The report provides operational staff insight into network health and the ability to analyze issues on a call-by-call basis. Reports can also be filtered based upon parameters such as the SBC host platform, start date, end date, source ID and destination ID. The report can be set to periodically update and display via the web interface. An example engineering report generated by the GENView RSM is highlighted below: Figure 4 - GENView RSM Engineering Report graphically presents the quality of the services and other performance metrics 8
SESSION MANAGEMENT IN AN ENTERPRISE COMUNICATION NETWORK The RSM system can also be used to generate up to 44 unique business reports. This feature comprises11 filters such as Region, Customer, Supplier and various source/destination filters each of which support the following four sort criteria: Calls, Minutes, Revenue and Profit. An example business report generated by the GENView RSM is highlighted below: • Generate SNMP Trap – sends a SNMP with textual alarm name and description to defined IP address • Block – can be used to block all endpoint calls or set a value to trickle calls • Modify Endpoint Priority - can be used to change the priority of an endpoint • Modify Route Priority - can be used to change the priority of a route • Execute Script – can execute an external script file which can be used to extend the RSM capabilities • Log – can be used to log to Syslog or local file • Mail – establish which email addresses should receive specific subject-related emails • Unblock – this restores the max calls configuration to an endpoint Figure 5 - GENView RSM Business Report includes analysis of the cost of carrying the session to ensure the service operates within the business specified constraints RSM Alarms The GENView RSM enables network administrators to set specific conditions under which alarms are triggered and define system behavior under these conditions. The RSM can be configured to detect alarms from either system level log files of each SBC platform or from SDRs generated by them. The range of SDR alarm types generated include parameters such as local disconnect, ASR, gateway minutes, dollar amount, average request rate, average call duration, post dial delay, low voice quality, high packet loss and jitter. All alarms can have two sets of actions assigned, the first set of actions, or ON-Trigger, are performed when the trigger condition is met, for example ASR < 50%. When the trigger condition is reset, e.g. ASR > 50%, the OFF-Trigger actions are performed. Alarms can be based on time-of-day, system load, region, customer, supplier or endpoint providing a flexible environment for event detection and triggering. Alarms and events may be associated with a range of different actions, such as: Figure 6 - CDR, Log, and SNMP Alarm Viewing Example The alarm capabilities of the GENView RSM provide network administrators with an end-to-end view into network health, allowing automation of responses to performance changes in the network. This enables administrators to take corrective action for degradation in QoS thereby improving the overall user experience. RSM Provisioning The provisioning support included in the RSM simplifies the management of GENBAND endpoints, routes, calling plans as well as rating information. For example, it enables an administrator to configure comprehensive rating information such as minimum duration, billing increment, and connection charge, which can be date/time activated allowing mechanisms such as off-peak and on-peak rates to be applied for a given route. This information can be provisioned manually through the web interface or by importing an external file defining the various data into the RSM. Based upon this 9
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