NEC NEAX2000 IVS2 system manual 30DTI

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CHAPTER 1 GENERAL INFORMATION

System Configuration

30DTI

The Digital Trunk Interface (DTI) interfaces the PBX directly to 30-channel PCM transmission line. The 30-DTI has the following functions.

•Unipolar/Bipolar Conversion (HDB3 Format)

•Signaling Insertion/Extraction

•Alarm Detection/Insertion

•Digital PAD on Voice Signal Transmission

•Cyclic Redundancy Checking (based on ITU-T Rec. G704)

•Channel Associated Signaling (based on ITU-T Rec. Q421 Digital R2 Signaling Code)

For connection of a 30-DTI and transmission line, either coaxial cable or twisted pair cable can be used.

DCH

The D Channel Handler (DCH) provides the D Channel signaling interface through the DTI to a Q-SIG network, and it is responsible for signaling between the PBX and the network under control of the system MP.

A DCH can control a maximum of 30 B Channels.

24DTI

The Digital Trunk Interface (DTI) interfaces the PBX directly to 24-channel PCM transmission line. The 24-DTI has the following functions.

•Unipolar/Bipolar Conversion (AMI Format)

•Alarm Detection/Insertion

•Digital PAD on Voice Signal Transmission

•Cyclic Redundancy Checking (based on ITU-T Rec. G704)

For connection of a 24-DTI and transmission line, a twisted pair cable can be used.

DCH

The D Channel Handler (DCH) provides the D Channel signaling interface through the DTI to a Q-SIG network, and it is responsible for signaling between the PBX and the network under control of the system MP.

A DCH can control a maximum of 23 B Channels.

Page 8	NEAX2000 IVS2 Q-SIG System Manual
	ND-70923 (E), Issue 1.0

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Contents SIG System Manual Liability Disclaimer NEAX2000 IVS2 NEAX2000 IVS2 Table of Contents List of Figures List of Tables Outline of this Manual PurposeReference Manuals Chapter General Information Summary System OutlinePhysical Interface 24DTI Physical Interface 30DTISIG Interworking with Other NetworkClock System Configuration30DTI PLO Card Name Functional Card Name and FunctionDescription 24DTI 30DTI System CapacityTime Slot Assignment Condition System ConditionsTime Slot Allocation for DTI Time Slot Allocation for DTI/DCH CardConnected Destination Indication Service FeaturesTerm 10 Transit Counter Transit Counter RelayingChapter Installation Precautions When PLUGGING/UNPLUGGING a Circuit CardWhen Holding a Circuit Card When Carrying a Circuit Card When Making a Switch Setting on a Circuit CardInstallation PN-24DTA-C Required EquipmentEquipment Description Quantity Remarks PN-30DTC-AInstallation Procedure for Q-SIG Installation ProcedureMounting DTI and DCH Card Mounting Conn Card Selection of PLO in MP Card Cable Connection via MDF DTI Cable Connection via MDFLocation of the AP Slots and the LTC Connectors for DTI Example of MDF Cross Connection for DTI Cable Connection via the Conn Card DTI Cable Connection via Conn CardExample of Coaxial Cable Connection Chapter System Data Programming HOW to Read this Chapter Startdescription Data DTI AssignmentExample of 30DTI Patterns Description DataDCH Initial CMA9 END DCH AssignmentTandem Connection Assignment Connected Destination Indication Assignment Chapter Circuit Card Information Circuit Card Information PN-30DTC-A DTI PN-SC01 DCH Mounting Location of Circuit CardPN-30DTC-A DTI PN-24DTA-C DTI PN-SC01 DCH List of Required Circuit CardCLK PN-CP14 MPLamp Color Function Name RUNSwitch Name Setting Function Check Number Position Modem SW2OFF OFF OFFSW4 Dip SW Down PN-30DTC-A DTI RMT PCMFRM MfrmSens Switch Setting Function Check Name Number PositionSource clock signal from network is Left JPSJPR RightDTI0 DTI1 DTI2 DTI3 Conditions Remarks PN-24DTA-C DTI CRC Sense OFF MDF SW0SW1 OFF DTI0 DTI1 DTI2 DTI3 DTI4 Conditions Remarks LPB PN-SC01 DCHSW0 OFF SW1 Dip SW Lamp Indications This card has no lamps PZ-M542 ConnJP0 Right JP1 RightJP2 Right PZ-M557 Conn Switch Name Setting Function Check Number Position

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