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Calling Line Identification (CLI)


In order to optimize the route selection, operators need to be able to measure the quality of service of each interconnection route. This is performed by measuring the CLI success rate for calls made from their network to external networks. Operators want to check whether the Service Level Agreements signed with its interconnection partners are fulfilled or not. A simple and effective way to have a good estimation of the Quality of Service offered by the interconnection carriers is to check if the CLI is transmitted to the target parties for a sample of test calls performed on a regular basis. Carriers are looking for a managed service that would make calls to various destination networks using predefined routes, check the CLI on the receiving party as well as report on the CLI successful rate for each route / destination.

Core function of Ascoms CLI solution is the managed service for monitoring technical quality of telco services. The heart of the infrastructure is based on a set of local units. The provided service addresses service assurance needs through the generation of transactions and the computation of Key Performance Indicators (KPI) about quality of service. Monitoring is performed with the end-to-end perspective and optional alarms are generated by the service if a threshold is exceeded concerning countries, routes, and services. Clients can troubleshoot problems by requesting “ad-hoc calls“ on top of running call campaigns. The provided service requires no technical configuration activities by the client. The local units, the glueing network, and the central unit are entirely configured and managed by the back-office of the service provider team. From the client point of view, the use of the service is performed through the management website, FTP download area,and by email (with attachments).

The Scope of Service

The CLI checking service is a managed service provided over Internet / VPN. It includes measurement of Post-Dial-Delay (PDD) and False-Answer/ Pre-charging. The “calling lines” (fixed lines) are provided and funded by the client. Calling lines should provide access to routes through prefix in dialing numbers or by port number.
The “called lines” (SIM cards or optional fixed lines) are provided by the seller. The call campaign is either initially designed by the service provider and validated by the Client, or totally planned and executed by the client. In both cases everything is fully operated by the service provider. A call campaign encompasses: number of calls per time period, destination numbers, routes (carriers and products) used to establish calls.
As part of the standard service, Results-Detail-Records RDR‘s are provided to user as downloadable files in CVS or Excel format, with detailed view of each transaction executed for the client. Reports in ordinary table format or as HTML pages, allowing excellent graphics and layouts, are available periodically scheduled or on demand. Alerts are sent via email to any distribution lists.
By default, the service generates call attempts (calls are not completed by the target devices), resulting in zero “hidden costs” and increased number of call attempts.

The Benefits:

  • Additionally Post-Dial-Delay and False-Answer/Pre-Charging Detection delivered

  • Integrated Sim Box Detection Feature available

  • Largest number of networks addressable in the market, 346 Operator 110 countriers covered and expanding to 400 Mobile Operator Networks

  • Central real schedule of all tests avoiding test conflicts. No "busy agent" situation - calls are planned conflict free instead of "blind shots"

  • Synchronization between call generator and probe, measuring accurate times in milliseconds resolution

  • Fix network (ISDN and POTS) destinations possible, not only mobile networks

  • No call duration (call attempts only), saving on call costs and hiding test activity from the invoice of other carriers

  • No need for administration, maintenance, debugging of system

  • More QoS (over 400 diferent tests available). additional services and future focus on SIP

  • Integrates into Intercarrier Routing Solutions

  • Save €1.000s monthly, very fast Return on Investment

Available System Outputs:

  • Status of a test call sampaign to observe fulfillment

  • Reports about results of ad-hoc calls and call campaigns

  • Alarms generated by the comparison of results and KPIs against definable thresholds

  • Reports about buildes KPIs in a couple of mixtures (historic, actual)

  • Reports are published in a web site or via sending emails dedicated to each client

  • Pre-configured standarf reports are available - costomized reports by web report editor

  • Traces of test calls in realtime showing each step of an interworking

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