Technical Expertise : - Operating Systems: Linux, Unix flavors & Windows. - Troubleshooting SIP Signaling and RTP Level Issues. - Installation of Various Services in Linux and Windows. (DNS, DHCP, FTP, OpenSSH, OpenVPN, APACHE, Sendmail, Samba, Squid Proxy Server, IPtables, Telnet, RAID, LVM, LDAP). - Installing and Managing NMS Servers ( Nagios , Cacti , OpenNMS , ZenOSS , Solarwinds ) - MySQL Database Management and Monitoring. - Understanding of Telecom Network elements like HLR, HSS, PDN-Gateway, S-Gateway, PCRF Interfaces, Diameter interfaces, GMSC integration, OCS, OFCS, P-CSCF, S-CSCF, I-CSCF, AS. - Installing and Managing OpenSTACK Cloud Environment for various Virtualization requirements. - Installing & Managing Asterisk, OpenSIPS, FreeSWITCH, OpenXCAP Servers. - Stress Testing of Asterisk ,OpenSIPS, FreeSWITCH Applications through SIPP, WINSIP. - Monitoring Network and Troubleshooting with Wireshark. - Network Security with Iptables/Shorewall/WEBMIN/Cisco. - Configuration of VOIP Phones (HARD/SOFT). - Managing Linux & CISCO Routers And Firewall for Network Shaping , Security & VPN - Develop Plugins for Nagios NMS with Perl & Shell Scripting. - SS7 on TDM Gateway – Telcobridges, AudioCodes. - Managing Google Cloud Networking, Firewall, Guest OS, Database Application. - Installing and Managing VMware ESXi Server for install Guest OS, Vswitch, vmotion migration - Installing and Managing Openstack Cloud Environment for various Virtualization requirements.