To appease my curiosity on the use of QoS and VoIP, i would like to buy the necessary equipments for my lab experiment but i don't know what to buy.
I currently have routers 2611XM with CSU/DSU, and four serial interfaces each.
What else do i then need to include to allow me practice with QoS, IntServe, Diffserv, VoIP and all that?.
I have read some books mentioned phones or IP phones, would therefore need any help in shaping my ways to the right purchase of equipments.
The sole aim in the long run is building lab for CCVP and hopeful more
Thank you all