Siva Kumar Email & Phone Number

Bengaluru, Ka, In

Bangalore Urban, Karnataka, India

Provide Technical Signalling Security Support to MNOs around the world.Dedicated Managed Service Support to top tier 1 telecom customers.Handling SS7,DIAMETER,GTP, SMPP and SMS Signalling firewall. Protect customers from A2P spam messages, Phising url, International Spam messages and flubot with url attack messages and actively block those traffic in national and international sms flow. Protect operators from SS7 and Diameter signalling attack and Block non GSMA Standards, Malformed packets,empty tc begin and decode failure packets. Allow and Block international roaming partners traffic and support operators to increase their revenues. Update roaming partners IR.21 details in the customer signalling firewall network and protect from unknown calling GT, Unknown origin realm

India

Configure SCTP and M3UA signaling connection between STP’s ,New client setup and Interconnecting the STP’s and DRA with new customer networks ,Keep monitor entire networks Camel Gateway, USSD server ,SMSC server ,Internal & External STP’s ,SIP switch, HLR,PGW and restart applications.IOT Tariff upload into the database and validate correct usage billingSIM cards Provisioning into the HLRTAP files usage validation from the roaming partnersMulti IMSI SIM,Global Roaming ,Data,Voice,SMS and SS7 Signalling

Bengaluru Area, India

Providing support for Cloudsim service (i.e. Multi IMSI services) cheap data roamingservice with the help of HUB partners (VRS, Jersy Telecom, Star hub, P4, SmartoneHK,AIS Thailand, 3 UK) and providing IOT services.Embedded SIM and M2M services to General motors and Daimler Car manufactures (provide data services)Handling all issues of cloud sim service Partners ( Freedom Pop, IFREE, Trainae, Travsim , Huawei,Freedata,net263,Verizon and General Motors,NTT Docomo).Checking the customers related issues in our core network backend logs(BSS,PGW,GGSN,HLR,HSS).Assigning data bundle units, checking user data usage details, updating the planvalidity and adding preferred VPMNs list based on the rating group in G-Control BSS.Analyzing the CPC-3G and CSR-LTE customers data session attempts( via GTPprotocol) and Diameter protocol logs for PCRF and OCS node connections.Checking users SAI requests, GSM Location update requests , GPRS location updaterequests (MAP protocol) in smart Signaling transfer point and checking LTEconnection logs in DRA node.Comfone GRX -Inbound and outbound GTP_C and GTP_U traffic monitoring.Daily activity- Health checkup on the production data center servers(CSIM,DIA,DRA,CSIM Billing, BSS-APP ,NMS).Manage the customer IMSI’s from central HLR/HSS (attach and deattach the network ,Blocking the SIM, assigning the APN)Configure and Route the user GTP_U data traffic to different PGW’s via SPRS node.International Roaming Location update test, Voice calls test ,GPRS browsing test,Speed test ,SMS test for mobile operators around the world through Roamfix & SigosTesting tool.Working on the following alarm monitoring tools-Op-manager,Nagios, Affirmed NetworksMobile Content Cloud, Acuitas Service Management System, control and monitor services in thenetwork.Knowledge on GSM (MSC,VLR,HLR,STP,SS7 signaling, SGSN,GGSN),UMTS Dataroaming, LTE Data connections(HSS,MME,PGW,SGW, Diameter connections), PCAPfiles, UNIX (Sun Solaris /Linux).

Bengaluru Area, India

Monitor the Clearing House System (CHS) processes to guarantee the smooth running of the entire production engine. Analysis of alarms raised by CH System during the validation of TAP/Rap files, problem identification and error handling. Analysis of RAP/TAP files received from other Data Clearing Houses (DCH). Raise and Handle disputes to other DCHs for wrong RAP files received as per GSMA guidelines. Recycle erroneously rejected RAP records. Monitor the process of sending and receiving the Outstanding File Reports (OFR). Validate deviations reported in OFRs from other DCHs. Daily processing of TAP files stopped due to tariff deviation. Validate the inter operator tariff rates between roaming partners in the TAP and RAP files. Architecture knowledge about GSM,UMTS and LTE network. Understanding of Call records for all the service types (Voice, GPRS, CAMEL prepaid & postpaid, 3G, 4G). Knowledge on billing & mediation, GSMA standards specifically in roaming. Configuring the Roaming Agreements between PLMN Opertors. Implement Discount and AA14 based IOT and do QC before moving tariff into production environment. Interact with Customer support team and provide technical expertise to resolve critical customer queries. Respond to customer queries with detail information and handling customer request through SR.

Bengaluru Area, India

Live Alarm Monitoring of GSM-2G, UMTS-3G and LTE-4G Networks Links.Live Monitoring of Key Performance Indicator for GSM, UMTS, LTE, PS Core, DNS, CS Core, IN VAS, IPBB & Transmission Networks Elements performance.Application health monitoring that application related processes, dashboards and application logs, connectivity to upstream and downstream data.Use alarm monitoring tools, interpret the condition being alarmed, resolve and / or escalate to the next level support.Hands on experience in International Level Call, SMS, Location Update Analysis from SS7 Traces (Nexus & Traffica Traces) & IN/OUT bound Roamers Count analysis.Circulating SMS & Report for all Major events happen in network according to customer request.KPI stats for all the day to day On-Air sites.Hands on experience Installation of Huawei Microwave, GSM Antenna and BTS Commissioning.Knowledge on Telecom NE of UGW, MGW, BSC, MSC, VLR, HLR, OCS, SGSN, GGSN, GMSC.