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DEFINITY Made Easy Tools
Issue 2, November 2000
DEFINITY Hardware
TN438B
TheTN438B provides 8 ports for loop-start CO trunks. Each port has tip and ring signal leads. The TN438B can detect 12 kHz and 50 Hz periodic metering pulses from the CO. Additional features include call still held timing and automatic guard fault detection circuitry.
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| Copyright� 2000 Avaya Inc |
| Send comments to MadeEasy Development Team |
| Always check at the Made Easy Web site for the most current information. |