ISDN test system
This ISDN test system is user-programmable and works for production and quality assurance testing of ISDN telephones connecting to the AT&T 5ESS, the NT DMS-100 and the EuroISDN switches. Test programs include Layer 1, 2 and 3; D channel keyboard signaling; DTMF signaling; ringer; and bit error rate test. Microtronix Systems Ltd.
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© 2012 Penton Media Inc.
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