iad2421-1t1
SIM2910 SIM2910JRA
The IAD2421-1T1 is an IAD2421 T1 PBX PORT UNIT 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
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