Hello! I'm not a good CV writer, but let me describe my skills for you to clearly understand it.
I work with the asterisk, PBX, Mail and other systems over 9 years.
Created a lot of call centers that are working successfully till now.
I can install and configure for you Vicidial\Goautodial, FreePBX, A2billing, Freeswitch.
and integrate it with Vtiger\Sugar CRM etc.
Installation and configuration Email servers, Cloud servers.
Zabbix monitoring (servers and networks)
I can install and configure KVM hypervisors and work with virtual machines on your or mine hosting.
Also I have a lot of expirience in:
All Linux and Microsoft Server 2003, 2008, 2012, R2, SBS and Windows 7 / 8
Firewall / Router configuration / Iptables /Fail2ban
Active Directory, TCP/IP, DNS, DHCP, VPN, IPsec tunnels
Mobile OS and devices
Virus / Malware scanning and removal
Remote support tools i.e. RDP and Team viewer
I hope I can be useful to you.