NEC UNIVERGE NEAX 2000 IPS Reference Manual page 299

DTI Specifications
Characteristics
Output
Line Rate
Line Code
Line Impedance
Pulse Amplitude
(Base to Peak)
Pulse Width
Input
Line Rate
Pulse Amplitude
(Base to Peak)
Frame Synchronization
Pattern
Input Jitter
Wander
Cable Length from
PBX to MDF or
External Equipment
*AMI: Alternate Mark Inversion
ZCS: Zero Code Suppression
B8ZS: Bipolar Eight Zero Substitution
UNIVERGE 2000 IPS Request For Proposal (RFP) Reference Guide
NEAX
Issue 6
Chapter 14 Common Channel Inter-Office Signaling (CCIS)
24-Channel
1.544 Mbps – 50 ppm
AMI with ZCS/B8ZS*
100 ohms
3 volts – 0.6 volts
324 ns – 30 ns
1.544 Mbps – 2000 bps (130 ppm)
1.5 volts – 3 volts
100011011100
ITU-T Fig. 1/G743
+138UI, -193UI or
-138UI, +193UI
Max. 200 m (656.2 ft.)
[With 0.65 gauge (22 ABAM)
twisted pair cable]
30-Channel
2.048 Mbps – 50 ppm
HDB3 (High Density Bipolar 3)
75 ohms + 100 mH
(Coaxial Cable)
120 ohms + 160 mH
2.37 volts nominal
(Coaxial Cable)
3 volts nominal
(Twisted-Pair Cable)
244 ns nominal
2.048 Mbps – 50 ppm
1.5 volts – 2.7
(Coaxial Cable)
1.5 volts – 3.3 volts
(Twisted-Pair Cable)
ITU-T Fig. 1/G743
ITU G823
Maximum 400 m (1312.4 ft.)
[With 0.65 gauge (22 ABAM)
twisted pair cable]
.
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