• Configuring Cisco Unity and Unity Connection. 
• Configuration of SRST and call signaling protocols on Voice Gateways. 
• Configuration of CME (Call Manager Express) on Cisco routers. 
• Monitoring and troubleshooting of Voice Gateways, SRST and call signaling protocols on Voice Gateways H.323, MGCP, and SCCP. 
• Configuration of Extension mobility. 
• Class of Service using Partitions and CSS. 

• Troubleshooting and providing support of Cisco IPT for various        clients. 
• Moving, Adding and Deleting Extensions. 
• Configuration of user features such as speed dial, call forwarding, transfer, call park, call pickup, call forward all, Extension mobility. 
• Troubleshooting of IP Phone registration issues. 
• Configuration ofVoice Interfaces: FXS, FXO, ISDN E1/T1. 
• Attending daily status report and incident management calls. 
• Management of Voice mail users.