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Good day, Here is my skillset: IP Services Engineering: Configured QoS / CoS failover on core network routers using IS-IS, MPLS,RSVP and BGP, core equipment consisted of (Cisco 3845, Juniper M10i, Juniper M7). Carrier grade E1/T1 emulation, DIA (Dedicated Internet Access), VOIP,Video,Enterprise and SMB internet services. Configured/Implemented native IP v6/IP v4 dual stack throughout network including an IP v6 internet gateway. Configured/Implemented HTTP , FTP, NTP, DNS, TFTP, SSH, SNMP, SMTP, POP3, TELNET, DHCP,SIP servers on both Windows,Linux and Unix Platforms. Designed and programmed web based applications for Unix,Linux and Windows Server platforms. Designed and Engineered VLAN systems for multi-customer network using Q-in-Q and Stacked VLAN implementations. Designed and Engineered international SIP carrier link to Verizon using a IPSEC VPN Tunnel with 3DES encryption. Implemented Firewalls, NAT, PAT IP intercept and intrusion detection for customers and internal carrier systems. Telephony/Software Services Engineering: Expert skill/knowledge in Asterisk PBX, Freeswitch, A2Billing, Kamailio, Elastix and Kazoo Expert skill/knowledge in SIPml5, Websockets and RESTFUL systems Expert skill/knowledge in MySql, PHP, Python, C++, Ruby, Erlang Expert skill/knowledge in Linux OS Expert skill/knowledge in ffmpeg and sox Feel free to contact me at anytime