10 years experience on Avaya and Cisco Voice products. certified on cisco certificate CCNA ,CCNP routing. Avaya certificate ACA, ACS, ACIS communication manger and ACSS session manger and system manger working with: 1- Avaya ( Communication manger, CMS, AES and SBC ..... etc). 2- Cisco ( UCCE and CUCM and Finesse and CVP component AND CUBE and VXML gateways..... etc )