SRAVAN KOMATIREDDY

• Executed end-to-end validation of IMS VoLTE, VoIP telephony, IP Toll-Free, and RCS call flows.
• Managed MOPs and test plans for new product deployments ensuring readiness for production.
• Monitored alarms and KPIs to maintain optimal VoLTE deployment integrity.
• Configured network devices such as routers, switches, and Cisco Call Manager.
• Implemented Group Policies during user account creation for enhanced operational efficiency.
• Conducted root-cause analysis on incidents to eliminate recurring issues.
• Authored detailed technical documentation that included operating practices and test plans.
• Applied strong troubleshooting skills to effectively isolate the device from network issues over the vast AT&T network infrastructure.
• Work on various protocols and technologies such as LTE, IMS, VoLTE, VoWifi, SIP, RCS, RTP, RTCP, MSRP, DNS, HTTP, and Diameter.
• Experience with tools like Wireshark, SipP, IXIA, NetScout IRIS, and RADCOM probe analyzers in the VOIP/IMS domain.
• Work on 3GPP/3GPP2 standards, GSM, UMTS, LTE, and VoLTE technologies.
• Work on shell scripting, Python, to debug the network codes under line traces.
• Work in a multi-vendor environment, and lead technical discussions with multiple stakeholders, including vendors.
• Analyze complex requirements and suggest technical solutions in IMS-Core.
• Configured, installed, and sustained various network devices and services (e.g., routers, switches, VPNs, Cisco Call Manager).
• Create, change, and delete user accounts per request, and implement the Group Policies for users and computers based on operational needs.
• Troubleshoot and analyze IMS and RCS call flows end-to-end (UE to NW entities/servers).
• Operate and maintain a clean VoLTE deployment by regularly attending to alarms, KPIs, and logs.
• Routinely upkeeping the system software, hardware, licenses, and certificates.
• Strong troubleshooting and analytical skills, and the ability to segregate issues of devices and networks.
• Advanced fault troubleshooting of VoLTE call flows, audio quality, and network problems.
• Perform root cause analysis of incidents, resolve all the problems identified during the incident, and, most importantly, apply lessons learned from the incident to prevent future recurrences.
• Create detailed technical designs, operating practices, MOPs, and test plans.
• Execute MOPs and test plans on new product deployments prior to placing them in the production network.
• Coordinate, execute, and document testing that may include vendors, and end users.
• Design and deploy the perfect networking system to meet the current and future networking needs of the company.

Tools and technology used: Ericsson IP Toll-Free Enterprise Tool, Oracle Communications Monitoring Tool, Nokia CTS, AT&T UC Voice, AT&T/Cricket/FirstNet Carrier, NetScout IRIS Analyzer, RADCOM, Wireshark, Nectar, SBC, AT&T Infrastructure Servers, Samsung, LG, Motorola devices, and CVOIP/PSTN devices.

• Converted the stores by moving the phones and computers from old to next generation.
• Configured Call Manager features and Service.
• Configured IP routes, VLANs, BGP, STP, port security, and deployed Cisco switches 3750, 4948, and 2960 routers.
• Managed Cisco AVVID VoIP, including Unity Voicemail and Unified Messaging.
• Provide on-call operational-level support for all aspects of the Cisco VoIP hardware and software.
• Troubleshoot call routing on GENBAND/Ribbon cloud, and AudioCodes voice gateways.
• Troubleshoot and manage new and old user accounts in Ribbon, and configure and manage Yealink T48S phones, Polycom phones, and AudioCodes 440HD phones.
• Configured and troubleshot Call Park/Retrieve, Simultaneous Ring, Circular Ring, and Linear Ring through AT&T Unified Communications.
• Configured and managed Yealink T48S, W60B, W56H, Polycom 511, 311, and 8800 phones via the AT&T Unified Communications Platform, performed validation, and created subscribers for Yealink phones, fax, and cordless phones using Node.js and Excel scripts.
• Provided Tier 2/3 GENBAND/Ribbon, and Cisco CUCM support for unified voice solutions.
• Deployed and managed multiple users on the GENBAND/Ribbon platform. Assign and validate routes for 40 new sites per day to initiate production.
• Involved in the manual configuration of connectivity to MP114 and MP-118 Audio Code Gateways, verified the registrations through the UCD Nectar portal, and used PuTTY through conductor and router levels.
• Monitored the health status of the stores using PuTTY, Linux. Upgraded the SCUBA SD-WAN cloud devices using the Juniper 128T SD-WAN Networking Platform.
• Maintained and upgraded hardware and software without any impact on production.
• Worked in the NOC, providing support to the client in various locations.
• Applying OS patches for Windows, upgrades for switches and routers on a regular basis, antivirus updates, and maintenance activities like IP phone upgrades.
• Monitor, evaluate, and report on the health of both Wide Area and Local Area (WAN/LAN) Networks.
• Desktop responsibilities included installing and troubleshooting all software, hardware, and configuration issues, and documenting all the solutions for future use.
• Worked with the Operations team, monitored different types of issue tickets raised by the stores, and provided them with level I and level II support.
• As a Level II escalation engineer, I assist the operations team in troubleshooting network issues using monitoring tools, logs, and packet captures in Wireshark to address them swiftly without affecting critical production.
• During migration testing of systems and services, and validating them for production.
• Exceptional knowledge and experience with Cisco networks, VoIP, and video products.
• Troubleshoot IVR, voicemail, and Auto Attendant services using Kandy/Ribbon.
• MACD resolution support for Help Desk ticket remediation for various geographically dispersed locations.

Tools and technology used: AT&T Unified Communications Voice, AudioCodes, Aruba, UCD Nectar, Juniper 128T SDWAN technology, CUCM, Ribbon/Genband, Kandy Auto Attendant, HEPIC, Moongsoft, Audiocodes, Grafana, ConnectWise, and ServiceNow.

• Migrated phones and computers in stores to advance technologies.
• Configured IP routes, VLANs, BGP, STP, and port security on Cisco switches and routers.
• Provided operational-level support for all aspects of Cisco VoIP hardware and software.
• Led troubleshooting efforts for IVR, voicemail, and Auto Attendant services using Kandy/Ribbon.
• Monitored WAN/LAN networks to evaluate performance and report health status regularly.
• Upgraded hardware and software systems while maintaining production continuity.
• Assisted operations team as Level II escalation engineer using monitoring tools and packet captures.
• Documented desktop installation and troubleshooting processes for future reference.