I am working in this domain since 2007 and i can give support physically and remotely. I can configure all kinds of Wireless Routers, ASTERISK SERVER, IP-PBX, VoIP ATA/HARDWARE like Mikrotik,CISCO, ZYXEL, LINKSYS & GRAND STREAM. I am specialist in ASTERISK SERVER, IP-PBX VoIP ATA, FXS & FXO configuration, Dialer configuration LAN & WAN and Network.