Senior Network Operations Engineer - E911/Ng911
• Responsible for the maintenance, troubleshooting and repair of TDM/Wireless/IP based E911/NG911 voice and TXT2911 services across the Intrado and ATT ESINet networks (end to end) for thousands of PSAPs• Build, program, deploy, maintain and troubleshoot Cisco routers/switches all over the United States• Cisco Routers – 1841, 1921, 1941, 2821, 2911, 3845, 4321, 4351, ASR1001• Cisco Switches – WS-3750, WS-C4507R-E, WS-C4500X-16, Nexus 5672, Nexus9K (FEX extender)• Troubleshoot MPLS/VRFs/ISIS/BGP across the United States on a daily basis• Troubleshoot Juniper SRX VPN concentrators and make sure that IPSec tunnels are not stale on customer or Intrado SRX, down on either customer or Intrado side via testing and verifying log files• Troubleshoot F5 load balancers and forward information on downed pools to the proper personnel• Riverbed for backup and recovery for all routers and switches• Troubleshoot Metaswitch and SONUS soft-switch voice and DS1/DS3 transport issues (to include SS7 signaling issues) with carriers• Troubleshoot Voice/VoIP/Text over IP/Conferencing using call detail records from SONUS/Metaswitch enterprise soft-switches• Troubleshoot SIP (4xx, 5xx and 6xx issues) based Call detail records (CDRs) all offloaded to Linux based logfile servers for parsing using standard Linux/Unix commands• Maintain and troubleshoot Oracle 4250/4500/4600 SBC hardware, connectivity and voice issues using NetScout/Wireshark• Maintain and troubleshoot Sycamore DNX multiplexers and Telco Bridges TSG 3800 gateways• Troubleshoot transport circuit issues – DS1/DS3/GigE/DWDM and Microwave vendor (Lumen/Verizon/MCI/Level3) circuits for E911/NG911 service delivery• Extensive use of NetScout for TCP/IP network and SIP/SDP/RTP signaling/media troubleshooting • For voice and text issues, place test calls and capture very detailed SIP CDRs to determine root cause of issue