NEC Neax 2000 Ivs2 Isdn System Manual

 NEAX2000 IVS2 ISDN System ManualPage 20  ND-70919 (E), Issue 1.0
CHAPTER 1  GENERAL INFORMATION
Outline of Event Based CCIS
Event Based CCIS Service Conditions
 Event Based CCIS connection is available between NEC NEAX PBXs.
 The maximum number of the virtual tie lines is 16 channels per one system, including both 
common signaling channels and voice channels.
 This feature suppor ts voice calls only. Suppor ted objects at PBX transmission side: single 
line telephone, D
term, DID/E&M/Ring Down...

CHAPTER 1  GENERAL INFORMATION
Card Name and Function
NEAX2000 IVS2 ISDN System Manual    
ND-70919 (E), Issue 1.0   Page 21
CARD NAME AND FUNCTION
Table 1-2 shows the circuit card names and function for ISDN.
Table 1-2  ISDN Card Name and Function
CARD NAMEFUNCTIONAL 
NAMEFUNCTION
PN-BRTA BRT 1-line Basic Rate (2B + D) Interface Trunk Card
Accommodates one 2-channel PCM digital lines
PN-2BRTC BRT 2-line Basic Rate (2B + D) Interface Trunk Card
Accommodates two 2-channel PCM digital lines
PN-24DTA-C DTI...

 NEAX2000 IVS2 ISDN System ManualPage 22  ND-70919 (E), Issue 1.0
CHAPTER 1  GENERAL INFORMATION
System Capacity
SYSTEM CAPACITY
System Capacity for ISDN-PRI
Table 1-3  System Capacity for ISDN-PRI
DESCRIPTIONCAPACITY
24DTI 24PRT 30DTI
DTI Card 8 – 4
DCH Card 8 – 4
Trunks for DTI 192 – 124
PRT Card – 8 –
Trunks for PRT – 192 –
ISDN Routes 8 8 4
ICH Card 12 12 12
ILC Card 48 48 48
Port per DTI Card 24 – 32
Port per DCH Card 1 – 1
Por t per PRT Card – 24 + 1 (DCH) –
Port per ICH Card 4 4 4
Port per ILC...

CHAPTER 1  GENERAL INFORMATION
System Capacity
NEAX2000 IVS2 ISDN System Manual    
ND-70919 (E), Issue 1.0   Page 23
System Capacity for ISDN-BRI
Table 1-4  System Capacity for ISDN-BRI
DESCRIPTION CAPACITY
BRT Card (BRTA/2BRTC) 12/24
Trunks for BRT (BRTA/2BRTC) 24/96
ICH Card 12
ILC Card 48
Port per BRT Card (BRTA/2BRTC) 2/4
Port per ICH Card 4
Port per ILC Card 8 

 NEAX2000 IVS2 ISDN System ManualPage 24  ND-70919 (E), Issue 1.0
CHAPTER 1  GENERAL INFORMATION
System Conditions
SYSTEM CONDITIONS
Time Slot Assignment Condition
As shown in Figure 1-10, the 30DTI/DCH/ICH/BRT card uses the time slot on the basic Highway
4. Therefore, the total number of time slots for all 30DTI/DCH/ICH/BRT cards must be 128 time
slots or less including all other application processor cards, which use Highway 4.
The 24DTI/PRT card can use the time slot on both the basic and expanded...

CHAPTER 1  GENERAL INFORMATION
System Conditions
NEAX2000 IVS2 ISDN System Manual    
ND-70919 (E), Issue 1.0   Page 25
Time Slot Allocation for DTI/PRT/DCH Card
On each DTI/PRT card, the system recognizes the lowest and highest channel numbers to which
trunk numbers have been assigned and allocates time slots to all the channels within them. If
trunk numbers are assigned to discontinuous channels in this case, the system also allocates
time slots to channels not assigned.
For example, in Figure 1-11,...

 NEAX2000 IVS2 ISDN System ManualPage 26  ND-70919 (E), Issue 1.0
CHAPTER 1  GENERAL INFORMATION
System Conditions
Line Distance Between PBX and NT1/ISDN Terminal
Figure 1-12 shows the line distance between PBX and NT1 and the line distance between PBX
and ISDN Terminal.
Figure 1-12  Line Distance Between PBX and NT1/ISDN Terminal
NOTE 1:The line distance marked by * shows the value when the 0.5φ twisted-pair cable
is used.
NOTE 2:The line distance marked by ** shows the value when the 0.65
φ...

CHAPTER 1  GENERAL INFORMATION
DTI Specifications
NEAX2000 IVS2 ISDN System Manual    
ND-70919 (E), Issue 1.0   Page 27
DTI SPECIFICATIONS
Transmission Characteristics
Table 1-5  Transmission Characteristics 
CHARACTERISTICS 24-CHANNEL 30-CHANNEL
(1) Output
 Line Rate 
 Line Code 
 Line Impedance 
 Pulse Amplitude
(Base to Peak) 
 Pulse Width 1.544 Mbps ± 50 ppm 
AMI with ZCS/B8ZS* 
100 ohms 
3 volts ± 0.6 volts 
324 ns ± 30 ns   2.048 Mbps ± 50 ppm   
HDB3 (High Density Bipolar 3) 
 
75 ohms...

 NEAX2000 IVS2 ISDN System ManualPage 28  ND-70919 (E), Issue 1.0
CHAPTER 1  GENERAL INFORMATION
DTI Specifications
(2) Input 
 Line Rate 
 Pulse Amplitude
(Base to Peak) 
 Frame Synchronization Pattern 
 
 Input Jitter 
 Wander 
 Cable Length from PBX to NT11.544 Mbps ± 200 bps 
(130 ppm)   
1.5 volts – 3 volts   
001011 (24MF)
ITU-T Fig. 1/G743   
+138U1, –193UI 
or 
–138UI, +193UI   
Max. 200 m (655 ft.)
(with 0.65
φ (22 ABAM) 
twisted-pair cable)2.048 Mbps ± 50 ppm   
1.5 volts – 2.7 volts...

CHAPTER 1  GENERAL INFORMATION
DTI Specifications
NEAX2000 IVS2 ISDN System Manual    
ND-70919 (E), Issue 1.0   Page 29
Frame Configuration of 24DTI
According to the AT&T Specifications for 24-Channel transmission, there are two types of frame
configurations: 12-Multi Frame and 24-Multi Frame.
(1) 12-Multi Frame
The frame has 12-Multi Frames, and each Multi frame has a 24-Channel PCM signal (8 bits/
channel) and an S bit (Superframe Bit). Figure 1-13 shows the frame configuration, and 
Ta b l e  1 - 6...