F. Technical Specifications
F-8 September 2002 9128-A2-GB20-80

Table F-5. ISDN PRI DBM (Optional Feature) Technical Specifications

Specification Criteria
Standards Compliance ANSI T1.403 1989 (physical layer) and A T&T 62411
Bellcore SR-NWT-002120, Issue 1 May 1992
ITU Q.921 1992 (link layer)
ITU Q.931 1993 (network layer)
TR-TSY-00860, ISDN Calling Number Identification
Services February 1989, and Supplement
June 1990
Power Consumption 8 mA at 120 VAC
Average power 1 watt (3.4 Btu per hour)
Weight 0.15 lbs. 2.4 oz. (0.07 kg 68 grams)
Switch Compatibility National ISDN-2 (NI-2), ATT 4ESS, or ATT 5ESS
Service Supported PRI, NI-2, ATT 4ESS custom, or ATT 5ESS custom
(supporting up to 23 B-channels), with Circuit-Switched
Data capability.
Framing Format D4, ESF
Coding Format B8ZS
Line Build-Out (LBO) 0.0 dB, 7.5 dB, 15 dB, 22.5 dB
ANSI PRM Selectable