Chester Calma

Sales Technical Manager - Americas at SIGOS - Santa Monica, CA, US

Chester Calma's Colleagues at SIGOS
Serafima Werner

Human Resources Specialist

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Lucile Garaux

Team Leader Product Marketing E2E Experience

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Bernd Heidner

Team Leader Software Engineering

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Mohammad Ahmed

Team Leader Support - Americas Region

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Gabriele Wacker

Front Office-Coordinator/Travelmanagement

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Chester Calma's Contact Details
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SIGOS
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SIGOS logo, SIGOS contact details

SIGOS

Santa Monica, CA, US • 250 - 499 Employees
SaaS

#1 in testing and monitoringWorldwide 1,000 leading communication companies trust SIGOS to ensure best mobile experience and service quality. Secure business success with accurate billing and fraud management. Drive future growth with best performing apps and innovations for happy subscribers and customers.Our solutions enable network operators, OTT content and solution providers, carriers, regulators and enterprise businesses to fully understand Quality of Service and Quality of Experience from an end-user perspective.Over 470 worldwide telecommunications customers, including the top 100 operators, as well as over 670 leading enterprise business benefit from our comprehensive range of scalable testing, monitoring, tracing and reporting solutions across the entire mobile industry value chain.SIGOS is headquartered in Nuremberg, Germany with offices in Belgium, Singapore and in the US. Based on a network of authorized partner companies and representations SIGOS is present in over 60 worldwide locations.---QoS and QoE Testing:Our product SITE is the industry's most advanced test system available. Its architecture allows seamless integrating into existing network infrastructures from radio access to core, to ensure and improve best network performance. Revenue Assurance:The SIGOS RA represents a key element of the SITE system to test and verify tariffs, assure correct billing and detect any revenue leakages. Roaming and Interconnect: The world's largest roaming testing infrastructure hosted by SIGOS, provides access to over 770 networks in more than 200 countries across the globe. Fraud Management:SIGOS' TÜV SÜD BABT certified services to help you to detect interconnect bypass losses quickly and efficiently.App Experience:The industry's #1 app testing and app monitoring solution supporting the largest device bank including all latest iOS and Android devices.-

Roaming Testing GSM Testing 3G 4G LTE Fraud Detection UMTS HSDPA HSUPA GlobalRoamer Monitoring Revenue Assurance OTT Fraud Detection SIM Box IREG TADIG End-to-End Testing Handset Simulation VoIP VoLTE GRQ Core Network IP Network SITE end-to-end QoE QoS App Testing App Experience App Monitoring NB-IoT LTE-M 5G IoT Testing eSIM RSP Testing Connected Cars IPTV Video Testing Data Testing Emergency Services Testing 5G Smartphone Testing IoT Roaming Roaming Performance Intelligence
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Frequently Asked Questions about Chester Calma
Chester Calma currently works for SIGOS.
Chester Calma's role at SIGOS is Sales Technical Manager - Americas.
Chester Calma's email address is ***@sigos.com. To view Chester Calma's full email address, please signup to ConnectPlex.
Chester Calma works in the Telecommunications industry.
Chester Calma's colleagues at SIGOS are Serafima Werner, Maria Barroga, Lucile Garaux, Bernd Heidner, Mohammad Ahmed, Gabriele Wacker, Vlad Bratu and others.
Chester Calma's phone number is
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