BB1: 2501: 1e or 1601 1e BB2: 2501: 1e or 1601 1e BB3: 4500/4700: 1atm/1e Frame Switch: 2523: 10s Cat1: 3550 EMI Cat2: 3550 EMI ATM Switch: LS1010 ISDN Simulator: Any brand, e.g. Teltone ILS 2000
----------------------- Option 2: The Less Costly
Everything as Option 1 except: -Cat2 is 2924XL instead of 3550 EMI
BB1: 2501: 1e or 1601 1e BB2: 2501: 1e or 1601 1e BB3: 4500/4700: 1atm/1e Frame Switch: 2523, 10s Cat1: 3550 EMI Cat2: 2924 XL ISDN Simulator: Any brand, e.g. Teltone ILS 2000 ATM Switch: LS1010
----------- Option 3: The Cheapest Option
Everything as on Option 1 except: -No ATM. -Cat2 is 2924XL instead of 3550 EMI
Console Access Router: 2511: 2s/1e/16async BB1: 2501: 1e or 1601 1e BB2: 2501: 1e or 1601 1e BB3: 2501: 1e, 1s or 1601 1e Frame Switch: 2523, 10s Cat1: 3550 EMI Cat2: 2924XL ISDN Simulator: Any brand, e.g. Teltone Demonstrator
----------- Option 4 : My own recommendation -The Budget Labs
Where to buy?
Ebay is the best place to buy. Look for the genuine and reputed seller with high credit rating.