portfolio
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OVERVIEWOffering nearly 8 years of experience in conducting VOIP Products - Manual, Automation & Interoperability Testing in Telecom Domain. Presently associated with Alcatel Lucent India Limited, Tamil Nadu as Technical Lead. Expertise in product performance, evaluating results and comparing results with predicted outcomes. Adroit in identifying and documenting product problems or defects using bug tracking systems.Conversant with automation framework development, testing and process improvement. Experience of working in GPON, IMS Technology and in design & development of automation framework tool for testing IMS network components, CMS networks and soft phone application testing. Adept with voice testing tools like IXIA IxVoice, Empirix Hammer FxTDM, Hammer Call Master and Hammer G5 SIP simulator. Well versed with TCL / TK, HVB Scripting and Sense talk; 3GPP standards for IMS network; Packet Cable 1.5 and 2.0 IMS Architecture; ANSI and ETSI voice Call Flows; All IMS network components core (CSCF, AS & MRF), Access n/w, Application, MGCF, PCMM, OSS & BSS; TAS, EMTA / EDVA device provisioning and HSS subscriber provisioning; Broad Soft Broad Works (Business IMS AS) and SPG (Service Provisioning Gateway in IMS) tools; GPON ALU ONT interoperability with soft switches like GenbandC20, Metaswitch SIP and H248, NSN HiQ, Ericsson IMS and Huawei IMS.
CORE COMPETENCIESIT Forte:
Telecom Concepts• Expertise in VOIP and IMS 3GPP technology• Possess extensive knowledge of GPON FTTH standard for VOIP; packet cable architecture 1.5,
2.0 IMS and DOCSIS specifications; ISUP, H248, DIAMETER and SIP call handling; ANSI and ETSI voice call flows; ISUP- SIP interworking concepts
• General circuit switching concepts, call processing and routing concepts
Supplementary Services• Conceptual knowledge of Supplementary services like various call forwarding service, CLIP,
CNIP, CNIR, CLIR, call barring services, call transfer, three way call, ACR, cancel call waiting, call waiting, 3 way call, voice mail, speed dial, call park call retrieve, directed call pickup, hunt groups, local number portability, etc.
Telecom Products• ALU ONT, ALU OLT 7342FTTU / 7360ISAM, Metaswitch, ICS5060, GenbandC20, Ericcson /
Huawei CSCF, Huawei / Ericsson TAS, Openwave Voicemail Server, Cisco BTS 10200, Cedar Point Safari, ALU MGCF, Cisco CMTS, Arris, Thomson, Cisco and Technicolor eMTA / eDVA, Broadsoft Broadworks, Huawei SPG, Huawei OMU
Protocols• ISUP, SIP, DIAMETER, H248 and MGCP
Testing Tools• IXIA Ixvoice (Analog Simulator), Empirix Voice Products Simulator (Hammer Fx-TDM (Analog),
Hammer Call Master (IVR Testing), Hammer G5 (SIP Simulator) and Wireshark
Operating Systems• Linux and Windows XP
Coding Languages/Scripting• TCL / TK, Hammer and Sense talk
Functional Skills:• Creating databases of known defects in order to develop protocol for repeat problems• Reviewing product requirements and specifications in order to foresee potential issues• Providing input of functional requirements and advising on design• Communicating processes and policies changes to peer• Providing quality methods training to peers• Analyzing defects and sending the product back to developers for modifications• Suggesting ways to improve testing strategies, as well as utilizing databases to create reports
and presentations on any defects• RCA on customer field issues and improving test plan in order to avoid future field issues
CAREER CONTOURJune 2014 – Present
As Technical Lead(Telecom domain GPON VOIP product manual testing)
June 2007 – June 2014As Specialist
(Specialist in telecom domain VOIP manual testing and design and development of Automation
framework tool for end to end testing of PC1.5 CMS networks, PC2.0 Business and Residential IMS
networks)
Key Deliverables:• Conducting manual testing of ISUP SS7 signaling, SIP, DIAMETER, H.248 MEGACO and MGCP
protocols; interoperability testing between ALU ONTs with different soft switches and IMS networks
• Maintaining GPON ALU ONT and OLT product and OMCI communications• Conducting Functional, Regression, Performance and SOAK testing on VOIP products; SIP and
H248 protocol compliance testing on ALU ONTs access devices• Provisioning voice service via TR069 mode• Performing Interoperability testing between different vendors eMTA, eDVA access devices
with Ericsson / Huawei IMS networks for MSO operator• Carrying out end to end class 5 features manual and automation testing in PC1.5 EMTA with
CMS (BTS and CP) soft switches; PC2.0 EDVA with IMS core
HIGHLIGHTSReceived:• Appreciation Award in Alcatel Lucent India Limited• Client Appreciation Award in TATA ELXSI, given by COMCAST and USA MSO operator• Extra Mile award in TATA ELXSI for good performance
PROJECTSAlcatel Lucent India Limited
• GPON ONT VOIP IOT Manual TestingTeam Size: 5 Tenure: Since Jun’14Client: Verizon, Telus, Etisalat, Sky, Telmex and NBNCoEnvironment: Windows, Linux, 15 types of ALU ONT’s, Metaswitch, Broadworks, GenbandC20,
ICS5060, SSW, Ericsson IMS, TR069 voice provisioning and OMCI provisioningDescription: Fiber to the premises GPON technology.ONT provides voice, data and video triple
play services to the customer. Tested Voice service for ONT in GPON. Tested VOIP protocols SIP and H248
Key Deliverables Configuring voice services using different provisioning methods like GPON standard OMCI
communications OMCIv1, OMCIv2 and TR069 provisioning using ACS server HTTP method. Testing:-
SIP compliance for ONT access device. H248 compliance for ONT access device with meta switch. All supplementary services/class 5 features call flows for ONT voice services. ANSI and ETSI SIP voice call flows Interoperability between ONT’s and different Soft Switches / IMS networks
TATA ELXSI• Soft-Client IMS Application Manual and Automation TestingTeam Size: 2 Tenure: Mar’13-May’14Client: Comcast USEnvironment: Windows, Linux, TCL / TK, Empirix Hammer FxTDM, Hammer XMS, Huawei SPG
(ServiceProvisioning Gateway), Comcast Xfinity Voice app iOS / Android, Eggplant and SIPPDescription: To test Xfinity Voice app with IMS networks. Design and implement a generic Soft-
Client automation architecture. The architecture enables to call between Xfinity Voice app soft client iOS / Android and IMS eDVA’s. Testing tool(Eggplant) is utilized to provide a complete solution by emulating users, for verifying the functionality of the voice products and reliability of the system under test
Key Deliverables: Developed Eggplant scripts for Soft client / Residential IMS networks for CLASS 5 features End
to End functional verification. Developed SIPP script for load function verification Tested:-
SIP compliance for the Xfinity Voice app soft client both in iOS and Android All supplementary services/class 5 features call flows for Xfinity Voice app Soft client Database for the soft client users and their registration status Soft client gateways for the soft client user to connect with IMS architecture
Automation Testing Framework for Residential and Business IMS VoiceTeam Size: 3 Tenure: Jan’12-Feb’13Client: Comcast USEnvironment: Windows, Linux, TCL / TK, Empirix Hammer FxTDM, Hammer Call Master, Hammer
G5, Hammer XMS, Huawei SPG (Service Provisioning Gateway), Cisco BACC (Broadband Access center) and Broadsoft Broadworks
Description: To design and implement a generic Voice Test Suite Automation to provide automated test solutions. The architecture enables to execute the test automatically using stored inputs and expected outcomes through the use of scripting language Tcl/Tk and Expect. Testing tool (Empirix) is utilized to provide a complete solution for verifying the functionality of the voice products and reliability of the system under test
Key Deliverables: Conducted failure analysis and raising new problem description if required Developed:-
Initial automation framework using TCL and automated the test cases Scripts for CLASS 5 features testing And enhanced API’s required for the feature Empirix scripts SBL, SBH using Hammer FxTDM (Analog)for Business IMS/Residential IMS
networks for CLASS 5 features End to End functional testing SPG interaction with TAS using SOAP XML tag with TCL framework
PCAP interface with Hammer XMS for analyzing TGRP value in the call trace in TCL framework for Call Typing features verification in IMS.
TCL code to capture requirement fields to generate billing for Residential IMS and Business IMS subscribers.
Enhancements for front head GUI using tcl/tk in optimized manner for selection of test cases according to networks across various features.
Manual Testing of Residential and Business IMS VoiceTeam Size: 4 Tenure: Jul’10-Dec’11Client: Comcast USEnvironment: SIP, DIAMETER, H248 Protocols, eDVA (Arris / Thomson / Cisco), CMTS, Camiant
PCRF, ACME,SBC, Hammer XMS, Huawei TAS, Ericsson / Huawei (Proxy / Serving) CSCF, Huawei SPG (Service Provisioning Gateway), Ericsson / Huawei HSS, Cisco BACC (Broadband Access Center) and Broadsoft Broadworks
Description: Testing of eDVA device integration with IMS network, End to End CLASS 5 features testing of Residential and Business IMS Voice. Components Testing involves Camiant PCRF for policy control mechanism, TGRP testing for Call types in TAS, HSS for subscriber provisioning, BACC for device provisioning and Registration, CALEA testing
Key Deliverables: Tested:-
Class 5 features for residential IMS like ACR, CLIR, CNIR, CW, TWC, SD8, SD30, CFU, AC, AR, 8XX Toll free’s, LATA, SCF, SCR and VM MWI features.
Class 5 features for business ims like call park call retrieve, directed call pickup, call transfer blind and consultation, music on hold, bargein, hunt groups (Regular / Circular / UCD).
IMS Registration of subscribers using Digest method involving SIP and DIAMETER protocol.
IMS network servers redundancy / failover testing.
Contributed in:- CALEA testing for access function, collection function and delivery function using Penlink
and SS8 IPG. Device Provisioning (Arris/Thomson devices) using BACC tool. Subscriber Provisioning in HSS. Fail-Over testing of components like CSCF and HSS for Geo-Redundancy (active/active and
active/standby) networks. Debugging Failure scenarios in IMS testing using Hammer XMS tool with call trace
involving SIP Protocol. TAS testing for Call Typing, Call Barring, Call shedding and HSS interaction using DIAMETER
protocol for subscription and notifications of updated subscriber profile. Testing billing component CDF interaction with CSCF/TAS/MRF(H248) using DIAMETER
protocol in creating CDR records for Offline Charging.
Automation Testing Framework for CMS Softswitch and Business VoiceTeam Size: 3 Tenure: Jul’09-Jun’10Client: Comcast USEnvironment: Windows, Linux, IXIA IxVoice, TCL / TK, CMS CISCO 10200 BTS softswitch, CMS safari
cedar point softswitch and broadsoft broadworksDescription: To design and implement a generic Voice Test Automation to provide automated test
solutions for CMS Cisco BTS and Cedar Point Safari softswitches. The architecture enables to execute the test automatically using stored inputs and expected outcomes through the use of scripting language Tcl/Tk and Expect. Testing tool(IXIA Ixvoice) GUI tool is utilized to provide a complete solution for verifying the functionality of the voice products and reliability of the system under test
Key Deliverables: Conducted failure analysis and raising new problem description if required. Developed:-
Initial automation framework using TCL and automated the test cases Scripts for test cases involving various features. And enhanced API’s required for the
feature Class 5 features TST’s end to end using IXIA IxVoice for Cisco BTS, Cedar Point Safari CMS
soft switches. TCL code for calculating billing for Cisco BTS using CDR records with CLI commands
Launcher enhancements for front head GUI using tcl/tk in optimized manner for selection of test cases according to networks across various features
Business Voice Manual Testing - Packet Cable 1.5Team Size: 3 Tenure: Jul’08-Jun’09Client: Comcast USEnvironment: Arris 2,4,8 line eMTA, Cisco CMTS, Cisco BTS 10200 switch, Broadsoft Broadworks,
Hammer XMS, Cisco BACC (Broadband Access Centre) and MGCP / H248 protocolDescription: Testing of eMTA device integration with BroadSoft BroadWorks and CMS softswitch
and end to end class 5 features testing for business voice. Components testing involves BroadSoft BroadWorks, CMS, Voice Mail, QoS in CMTS, BACC for eMTA device provisioning and Registration
Key Deliverables: Tested:-
End to end MGCP / H248 signaling call flow for Business Voice network . Business voice features like directed call pickup, barge in, music on hold, circular hunt,
regular hunt, uniform call distribution and call park call retrieve features. CMTS for gate allocation and QoS during active call using CLI commands like
gateset/gatedelete by logging into CMTS unit. Contributed in:-
Device Provisioning (Arris device) using BACC tool. Subscriber Provisioning in Broadsoft Broadworks and CMS. Policy server integration with CMTS. Defect fixing for the issues identified in field and certification cycle.
Manual Testing of CMS Soft Switch - Packet Cable 1.5Team Size: 3 Tenure: Jul’07-Jun’08Client: Comcast USEnvironment: Arris / Thomson eMTA, Cisco CMTS, Cisco BTS 10200 switch, Safari Cedar Point,
Hammer XMS, Cisco BACC (Broadband Access Centre) and MGCP protocolDescription : Testing of eMTA device integration with CMS soft switch and End to End CLASS 5
features testing for Residential voice. Components Testing involves Billing verification in CDF(Charging Data Function) using DIAMETER Protocol, TGRP testing for Call types in CMS application server ,PCRF involving CMTS Gate check, BACC for eMTA device provisioning and Registration
Key Deliverables: Tested:- End to end class 5 features call flow for residential CMS network soft switches like ACR, CW,
TWC, SD8, SD30, CFU, AC, AR, 8XX toll free’s, LATA, SCF, SCR and VM MWI features. Developed geo-redundancy fail - over mechanism for CMS (Active / active and active /
standby). Tested QoS in CMTS for gate allocation during active call using CLI commands like gate set /
gate delete by logging into CMTS unit.
Participated in:- Device Provisioning (Arris / Thomson devices) using BACC tool Interworking between CMS and PSTN network using MGCF and MGW Subscriber Provisioning in CMS Debugging failure scenarios in CMS testing using hammer XMS tool with call trace
involving SIP protocol Billing component CDF interaction testing with CMS using DIAMETER protocol in creating
CDR records for offline charging
ACADEMIC CREDENTIALS
B.E. (Electrical & Electronics Engineering) in 2007
