NEC Neax2000 Ivs Isdn System Manual

ND-45857 (E) CHAPTER 2
Addendum-001 Page 3
AUGUST, 1998 Revision 3.1
SYSTEM DESCRIPTION
CHAPTER 2 SYSTEM DESCRIPTION
1. GENERAL
This chapter explains the system configuration, additional hardware and system specifications pertaining to
ISDN of the PBX.
2. SYSTEM CONFIGURATION
2.1 System Outline
The PBX can interface with an ISDN with Primary Rate Interface (1.5 Mbps PCM - 23B + D), Basic Rate In-
terface (144 kbps PCM - 2B + D) and ISDN Terminal.
2.1.1 System Outline of ISDN with PRI
When installing...

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SYSTEM DESCRIPTION
2.1.2 System Outline of ISDN with BRI
When the system is to be interfaced with a relevant ISDN exchange with the Basic Rate Interface (BRI), it is
necessary to install a BRI card for the digital network interface. A Phase Locked Oscillator (PLO) is required to
synchronize the PBX with the network.
Figure 2-2 shows the connection diagram of ISDN with BRI.
Figure 2-2   Connection Diagram for PBX and ISDN Line with BRI...

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SYSTEM DESCRIPTION
2.1.3 System Outline of ISDN Terminal
When providing the system with an ISDN Terminal, it is necessary to install an ISDN Line Circuit (ILC) card
for the line interface of an ISDN Terminal and an ISDN Channel Handler (ICH) card for layer 2 protocol pro-
cessing (LAP-D).
Figure 2-3 and Figure 2-4 show the connection diagram of ISDN Terminal.
Figure 2-3   Connection Diagram of ISDN Terminal (for ISDN with PRI)
Note...

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Figure 2-4   Connection Diagram of ISDN Terminal (for ISDN with BRI)
ILC
2D
ISDN PBX
2B
D channel
PLO
ILC
ISDN
FP
BRI
NT1: Network Termination Device 1
BRI: Basic Rate Interface
PLO: Phase Locked Oscillator
ILC: ISDN Line Circuit
ICH: ISDN Channel Handler
TA: Terminal Adapter TDSW
NETWORK
ICH
ICHCLOCK
SIGNAL
2D/8D 2D/8D
Terminal
(TE) • Point to Point
Connection
2B x 2
2D
2B x 2
TA • Point to Multi-point
Connection...

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2.1.4 System Outline of Event Based CCIS
Event Based CCIS allows a PBX customer who does not have a tie line (or when a customer can not use the tie
line due to the busy or fault of the line), to use the various CCIS feature by using the ISDN line as a CCIS virtual
tie line, on the 2400 ICS - 2000 IVS connection or the 2000 IVS - 2000 IVS connection. For the PBX customer
who usually has low traffic, Event Based CCIS allows the CCIS feature by...

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SYSTEM DESCRIPTION
• COMMON CHANNEL AND VOICE CHANNEL LINK CONTROL
When the call is a regular ISDN call, or when there is no call on the PBX, the common channel and the voice
channel for virtual tie line is disconnected.
If the sub-address sent from an extension or a trunk informs the number to activate the CCIS link, the PBX
performs making a CCIS link. When the opposite office sends the answering signal (“connect”) to the ISDN
network, a connection between...

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SYSTEM DESCRIPTION
2.2 DTI
The Digital Trunk Interface (DTI) interfaces the PBX to the ISDN Line and provides the following functions.
• Unipolar/Bipolar Conversion (AMI Format)
• Alarm Detection/Insertion
• Digital PAD on Voice Signal Transmission
• Loop-Back Test (Local/Remote Loop Back)
• Cyclic Redundancy Checking (based on ITU-T Rec. G704) for ESF Framing
For connections of DTI and transmission line, twisted-pair cable can be...

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SYSTEM DESCRIPTION
Figure 2-6   Clock Supply Route Configuration
2.6 ICH
The ISDN Channel Handler (ICH) provides the D channel signalling interface and controls an ILC (Layer 2 and
3). PN-SC02 is the 2channel ICH card and PN-SC03 is the 8channel ICH card.
2.7 ILC
The ISDN Line Circuit (ILC) provides a physical interfaces to the ISDN Terminal. The interface provides for a
maximum of 2 line circuit.
PBX
TDSW
DTI/BRI PBX
TDSW
DTI1/BRI1
PLO
ISDN
NETWORK...

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SYSTEM DESCRIPTION
2.8 Equipment for Event Based CCIS
For Event Based CCIS, the Virtual Trunks which are used as a No. 7 CCIS trunk, the existing CCH card and
DTI/BRI card are required to activate No. 7 CCIS link (virtual tie line connection) on an ISDN network.
Virtual Trunk:
The Virtual Trunk consists of a Home-Side Trunk and a Mate-Side Trunk. The Home-Side Trunk is con-
nected to the station side, and the Mate-Side Trunk is connected to network side of the...

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SYSTEM DESCRIPTION
3. SYSTEM SPECIFICATION
3.1 System Capacity
3.1.1 System Capacity for ISDN with PRI
3.1.2 System Capacity for ISDN with BRITable 2-1  System Capacity for ISDN with PRI
DESCRIPTION CAPACITY REMARKS
Max. No. of DTI Card 5 Depending on the No. of DCH
Max. No. of DCH Card 5
Max. No. of Trunks for DTI 115 115 B channels
Max. No. of ISDN Lines 5 1 Line/DTI
Max. No. of Trunks per ISDN Line 23 23 B channels per ISDN link...