NEC NEAX 2000 IPS - Page 315

Chapter 14 Common Channel Inter-Office Signaling (CCIS)
NEAX 2000 IPS Request For Proposal (RFP) Reference Guide Page 14-23
NDA-24349, Issue 4
DTI Specifications
Characteristics 24-Channel 30-Channel
Output
Line Rate
Line Code
Line Impedance
1.544 Mbps ± 50 ppm
AMI with ZCS/B8ZS*
100 ohms
Pulse Amplitude
(Base to Peak)
3 volts ± 0.6 volts
Pulse Width
324 ns ± 30 ns
2.048 Mbps ± 50 ppm
HDB3 (High Density Bipolar 3)
75 ohms + 100 µH
(Coaxial Cable)
120 ohms + 160 µH
2.37 volts nominal
(Coaxial Cable)
3 volts nominal
(Twisted-Pair Cable)
244 ns nominal
Input
Line Rate
Pulse Amplitude
(Base to Peak)
1.544 Mbps ± 2000 bps (130 ppm)
1.5 volts – 3 volts
2.048 Mbps ± 50 ppm
1.5 volts – 2.7
(Coaxial Cable)
1.5 volts – 3.3 volts
(Twisted-Pair Cable)
Frame Synchronization
Pattern
100011011100
Input Jitter ITU-T Fig. 1/G743 ITU-T Fig. 1/G743
Wander +138UI, -193UI or
-138UI, +193UI
ITU G823
Cable Length from
PBX to MDF or
External Equipment
Max. 200 m (656.2 ft.)
[With 0.65 gauge (22 ABAM)
twisted pair cable]
Maximum 400 m (1312.4 ft.)
[With 0.65 gauge (22 ABAM)
twisted pair cable]
*AMI: Alternate Mark Inversion
ZCS: Zero Code Suppression
B8ZS: Bipolar Eight Zero Substitution.