Paradyne CSU User Manual
F. Technical Specifications
9128-A2-GB20-80
September 2002
F-7
Table F-4.
ISDN BRI DBM (Optional Feature) Technical Specifications
Specification
Criteria
Standards Compliance
ANSI T1.601 – 1992 (physical layer)
Bellcore SR-NWT-001937, Issue 1 – February 1991
ITU Q.921 – 1992 (link layer)
ITU Q.931 – 1993 (network layer)
ITU Q.931 – 1993 (network layer)
TR-TSY-00860, ISDN Calling Number Identification
Services – February 1989, and Supplement –
June 1990
Services – February 1989, and Supplement –
June 1990
Power Consumption
60 mA at 15 VDC
Average power .9 watt (3.07 Btu per hour)
Average power .9 watt (3.07 Btu per hour)
Weight
0.27 lbs. 4.3 oz. (0.12 kg 122 grams)
Switch Compatibility
National ISDN-1 (NI-1)
Service Supported
Capability Package IOC B for 1B-service, which
supports up to two circuit-switched B-channels, BRI-B1
and BRI-B2, with one Service Profile Identification
(SPID) number and one local phone number.
supports up to two circuit-switched B-channels, BRI-B1
and BRI-B2, with one Service Profile Identification
(SPID) number and one local phone number.
Capability Package IOC R for 2B-service, which
supports up to two circuit-switched B-channels, BRI-B1
and BRI-B2, with two SPID numbers and two local
phone numbers.
supports up to two circuit-switched B-channels, BRI-B1
and BRI-B2, with two SPID numbers and two local
phone numbers.
Switched Network Interface
One USOC RJ49C 8-pin keyed modular plug and jack,
specified in ISO/IEC 8877
specified in ISO/IEC 8877
Transmit Interface
Signal Level
Impedance
13.5 dBm nominal over frequency band, 0 Hz – 80 kHz
135
Ω
Receive Interface
Dynamic Range
Impedance
Operates on 2-wire loops, defined in ANSI T1.601-1992
135
Ω
Modulation and Frequency
2B1Q line coding with 4-level amplitude modulation
(PAM) at 80 Kbps baud
(PAM) at 80 Kbps baud
Channel Equalization
Receiver
Automatic adaptive equalizer with echo cancellation