I have a lot of experience in dealing with all aspects of VoIP communications including IP Telephony for different vendors , to the most complex systems like Enterprise Contact Centers deployment and configuration , also integration with other vendors . I am certified CCIE Collaboration already , and done 50+ Projects , including below solutions :   - CUCM ( up to Mega Cluster )   - CUC   - IMP   - UCCX ( Both Scripting and Deployment )  - UCCE   - CUAC   - Expressway MRA Solution   - B2B Solution   - CUBE and VGWs   - E1 / T1 configurations   - 3rd Party Integrations ..