Roberto Borrero Monferrer

Experience

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  Telefónica

  Sept 2007 - Nov 2010

  Systems Engineer

  2º Level Systems Engineer at Movistar I+DProject: ALTAMIRAAdministration of SIPS intelligent network (Pre-payment IVR node of Movistar mobile phones) South America based (LATAM) in MadridMain duties:• Provided 24/7 on call technical support coverage in an highly critical environment• Provided on-call support during system crisis with focus on immediate resolution and root-cause analysis• Installed, Configured and Maintained the mobile service phone systems: ISUP, SMPP, TCAP, CAMEL• Tracked Incidences from the opening to the closure• Organised the necessary documentation associated with services and maintenanceEnvironment, protocols & tools:• Postgres, Servidor Apache, Tomcat• O.S.: Linux Red Hat 7.3, Solaris• SS7 Protocol: ISUP, SMPP, GSM, ASN.1• Signaling Software: Dialogic, Septel y Global Call Mostrar menos

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  Vodafone Roaming Services S.à r.l

  Jan 2011 - Jan 2014

  International Roaming Engineer

  International Roaming Consultant at Vodafone Roaming Services (VRS)I have been involved in Consulting tasks as International Roaming Specialist at the Vodafone Roaming Hub Service Management CentreMain duties:• Carried out Consulting tasks as International Roaming Specialist at the Vodafone Roaming Hub Service Management Centre (IR25)• Agreed and implemented Inter-Operator Tariff (IOT) with new clients connections (STP/MTP /SCCP) to VRS• Coordinated and escalated necessary issues/problems to 3rd party vendors, customer network departments, Marketing , IT Teams and other roaming hubsEnvironment, protocols & tools:• Remedy (BMC Software)• Ca Clarity PPM (CA Technologies)• Romina• GSM CAP Call Trace (Ericsson)• TMOS (Telecommunications Management and Operations Support, Ericsson)• GeoProbe (Tektronix) Mostrar menos

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  Atos Consulting

  Jan 2011 - Jan 2011

  Test Engineer

  Tests de calidad de NGIN (Next Generation Intelligent Network)Functional and non-functional testing of Next Generation Intelligent Networks (NGIN).NGIN application servers (AS) provide the capability of integrating mobile devices within the IMS domain based on the use of SS7 and SIP protocols; hence allowing the convergence of Public Switched Telephone Network (PSTN) and IMS network (SIP Telephony).I have been involved in the integration, deployment and testing of a project conceived to provide service to telecommunication operators in multiple countries.Main activities:• Test Plan design: Service logic, billing (CDRs) and system tests• Test execution in overall project phases: FAT, IOT, TACC and FACC• Automation regression testing• Analysis and troubleshooting of encountered issues• Daily reporting of status• Customer support (acceptance tests)Environment, protocols and tools:• UNIX: OS Solaris 10• SLEE (Service Logic Execution Platform): OpenCloud, jNetX• SQL (Oracle TimesTen database)• SS7 signalling protocols: MAP, INAP, TCAP, ISUP• SIP protocol (RFC 3261)• DIAMETER Credit-Control Application (RFC 4006)• Wireshark (Network Protocol Analyzer)• SIPP (Test tool and traffic generator for SIP protocol – IMS)• Bugzilla / Quality Center (Bug tracking and reporting) Mostrar menos