800-15428-03
SIM4DD0 SIM4DD0BRA
The 800-15428-03 is an IAD2421 8/16FXS T1 PBX for the IAD2400 product line. VenTel buys, sells, tests and installs CISCO IAD2400 products.
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Terminology
T1
- DIGITAL SIGNAL 1 (DS1, ALSO CALLED T1) IS A T-CARRIER SIGNAL DEVISED BY BELL LABS