![NEC UNIVERGE NEAX 2000 IPS System Manual Download Page 43](http://html1.mh-extra.com/html/nec/univerge-neax-2000-ips/univerge-neax-2000-ips_system-manual_3962828043.webp)
CHAPTER 1 GENERAL INFORMATION
– 29 –
NWA-008853-001 Rev.3.0
97ch1001.fm
DTI SPECIFICATIONS
Transmission Characteristics
Transmission Characteristics
* AMI: Alternate Mark Inversion
ZCS: Zero Code Suppression
B8ZS: Bipolar Eight Zero Substitution
CHARACTERISTICS
24-CHANNEL
30-CHANNEL
(1) Output
• Line Rate
1.544 Mbps ±50 ppm
2.048 Mbps ±50 ppm
• Line Code
AMI with ZCS/B8ZS*
High Density Bipolar 3 (HDB3)
• Line Impedance
100
Ω
75
Ω
(Coaxial Cable)
120
Ω
(Twisted-Pair Cable)
• Pulse Amplitude
(Base to Peak)
3 volts ±0.6 volts
2.37 volts nominal
(Coaxial Cable)
3 volts nominal
(Twisted-Pair Cable)
• Pulse Width
324 ns ±30 ns
244 ns nominal
(2) Input
• Line Rate
1.544 Mbps ±200 bps (130 ppm)
2.048 Mbps ±50 ppm
• Pulse Amplitude
(Base to Peak)
1.5 volts – 3 volts
1.5 volts – 2.7 volts
(Coaxial Cable)
1.5 volts – 3.3 volts
(Twisted-Pair Cable)
• Frame Synchroniza-
tion Pattern
100011011100
• Input Jitter
ITU-T Fig. 1/G743
ITU-T Fig. 1/G743
• Wander
+138UI, –193UI or
–138UI, +193UI
ITU-T G823
• Cable Length from
PBX to MDF or Exter-
nal Equipment
Maximum 200 m
(Maximum 656.2 ft.)
[with 0.65
φ
(22 ABAM) twisted-
pair cable]
Maximum 400 m
(Maximum 1312.4 ft.)
[with 0.65
φ
(22 ABAM) twisted-
pair cable]
DTI SPECIFICATIONS
Summary of Contents for UNIVERGE NEAX 2000 IPS
Page 1: ...NWA 008853 001 ISSUE 3 0 CCIS System Manual...
Page 14: ...vi NWA 008853 001 Rev 3 0 97toc001 fm THIS PAGE LEFT BLANK INTENTIONALLY...
Page 18: ...4 NWA 008853 001 Rev 3 0 97ch0001 fm THIS PAGE LEFT BLANK INTENTIONALLY...
Page 364: ...350 NWA 008853 001 Rev 3 0 97ch3005 fm THIS PAGE LEFT BLANK INTENTIONALLY JANUARY 31 2006...