NEC UNIVERGE NEAX 2000 IPS - Manual (Page 65)

Chapter 3 System Highlights
UNIVERGE NEAX 2000 IPS Request For Proposal (RFP) Reference Guide Page 3-17
Issue 6
Transmission Characteristics (For TDM Circuits)
Description Specifications
PCM Coding System A-law/U-law
Insertion Loss 0.15 dB at 1KHz
Return Loss 20 dB or more (300 to 3,400Hz) against 600 ohms
Longitudinal Balance 59 dB or more (300 to 3,400Hz)
Attenuation/Frequency Distortion -0.2 dB to +0.7 dB (300 to 3,400Hz)
Group Delay Distortion 0 to 0.3msec. (500 to 2,800 Hz)
Total Distortion 25 dB (Input signal:-45 dBm0)/40 dB(input signal:0 dBm0)
Idle Channel Noise -67 dBmop or less (psophometric noise)
-50 dBm0 or less (single frequency noise)
Impulsive Noise 0 counts at -35 dBm
Cross Talk Attenuation 90 dB or more
Inter-modulation Products -40 dB or more
Spurious In-Band Signals -49 dBm0 or less
Signal Attenuation Attenuation rate: 12 dB per octave or more at 3.4 kHz above
Attenuation level: -40 dBm or less at 3.4 kHz and above
-70 dBm or less at 50 kHz and above
Line Conditions
Description Specifications
Loop Resistance (including Telephone Set)
Analog Standard Line
Max. 600 ohms
Analog Long Line Max. 2,500 ohms (DP 10pps), Max. 1,700 ohms (DP 20pps)
Max. 1,200 ohms (DTMF)
Loop Resistance (including Opposite End Resistance)
Central Office Trunk
Max. 1,700 ohms
Tie Line Trunk (Loop Dial) Max. 2,500 ohms
Tie Line Trunk (E&M) Max. 900 ohms (only E-wire condition)
Cable Length Note 1
SN716 Desk Console
8DLC/4DLC/2DLC Card Max. 350 meters (Max. 300 meters for 8DLC card)
4DLC/2DLC Card with
AC Adapter Max. 1,200 meters
Dterm Series i/E
8DLC/4DLC Card Max. 200 meters (Max. 300 meters for Dterm 8 and Dterm 8D)
2DLC Card Max. 850 meters
4DLC/2DLC Card with
AC Adapter Max. 1,200 meters
DSS/BLF Console
4DLC/2DLC Card with
AC Adapter Max. 1,200 meters
Zone Transceiver
ZTII-U (for U-Interface) Max. 1,210 meters (2-wire), Max. 2,100 meters (4-wire) @-48V
Max. 970 meters (2-wire), Max. 1,700 meters (4-wire) @-45V
ZTII-U with AC Adapter Max. 3,950 meters
Note 1: Cable length is based on cable with 0.5mm diameter and without lightning arresters