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Nortel Networks NN43001-301 manual Hierarchical synchronization, Hierarchical Synchronization

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Description 159

In an isolated private network, the clock controller can operate in free run mode and act as a master clock to be tracked by other PBX systems in the private network.

Hierarchical synchronization

Figure 59 "Hierarchical Synchronization" (page 159) provides a general view of the Digital Network Clock Synchronization including the four stratum level Node Categories. Stratum 1 being the most accurate and Stratum 4 being the least accurate. System clocking meets Node Category E Stratum 4 requirements. Also shown are ways of providing a Secondary Clock Source while preventing timing loops.

Figure 59

Hierarchical Synchronization

Nortel Communication Server 1000

ISDN Primary Rate Interface Installation and Commissioning

NN43001-301 02.03 Standard

Release 5.5 7 December 2007

Copyright © 2003-2007, Nortel Networks

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Nortel Networks NN43001-301 manual Hierarchical synchronization, Hierarchical Synchronization

Contents

Isdn Primary Rate Interface Installation and Commissioning Legal Notice Contents Msdl installation for all systems Clock Controller description and installation 155 Mb DTI implementation 237 Procedures Copyright 2003-2007, Nortel Networks New in this release OtherRevision History 0Mb DTI/PRI Description, Installation and Maintenance Getting help from the Nortel web site How to get help Getting help through a Nortel distributor or reseller Introduction SubjectApplicable systems Technical Documents Intended audienceRelated information System migration Isdn Primary Rate Interface equipment overview Contents Copyright 2003-2007, Nortel Networks Primary Rate Interface PRI hardware requirements Introduction PRI hardware shown without downloadable PRI and DCH cards Isdn Signaling Link ISL hardware Isdn Signaling Link ISL hardware DCH/PRI interface Power requirementsChannel Handler description Kbit/s Clear Data Hardware NT6D11 DCH faceplate layout QPC757 DCH QPC757 faceplate Amps Watts BTUs QPC757 DCH faceplate layoutCurrent Heat MSDL/PRI interface Msdl faceplateNT6D80 Msdl faceplate layout NTBK51 Downloadable D-Channel Daughterboard Standard PRI cardsNT8D72 faceplate NT8D72 PRI faceplate layout Cable requirements Carrier interfaceFaceplate Destination Type Description QPC720 PRI for 1.5/2.0 Mb gateway Echo canceller interfaceTracking mode QMT21 High Speed Data Module Free run non-tracking mode Reference clock errorsClock controller primary and secondary tracking Automatic clock switching Automatic clock recovery QPC720 faceplate Pin female, D-connector QPC720 Cable requirements Faceplate destination TypeMiniature bantam jack Cable type From Length feet Meters Link version 2 protocolQPC720 PRI cables and cable lengths Maximum Length Disk drive hardware NT5D97 Dual-port DTI2/PRI2 cardExternal D-Channel Interface DCH or Msdl DCH/MSDL Receiver Ready control signals RR State Condition NT5D97 faceplateOFF ENB/DIS Plastic, ESD protected Card Enable/disable Switch Enable/Disable Switch Enet LEDsFaceplate Function Designator Type Description NEA LEDs Trunk Disable DIS LEDsUnit 0 Clk Connectors OOS LEDs System capacity and performance Physical capacity Unit 1 Clk ConnectorsConnector J5 TRK Connector J6 DCH Without Testability and diagnosticsNT5D97 DDP2 power requirements Voltage Source Current CPU capacity E1 carrier cables NTCK45AA cable pins Cable Name Description Color PinsPanel NT8D7217 NT8D7217 cable pins NTCK78AA cable pins Reference clock cables NTCK79AA cable pins MSDL/DCH cables For a description on each available option Cable diagrams DDP2 cable for systems with an I/O panel DDP2 cable for systems without an I/O panel Clock for the NT5D97 Clock operation Clock Controller primary and secondary tracking Reference clock errors Clock Controller options summary CC Option CPU Type Clock conﬁgurations DDP2 Connector Clk0 provides a Ref 1 clock source fromConnector Clk1 provides a Ref 2 clock source from Clock Controller options description Clock Option Clock Controller Option Clock Controller Option Clock Controller Option NT5D12 Dual-port DTI/PRI Channel and Msdl interface DCHI/MSDL Receiver Ready control signals RR State Condition NT5D12 faceplate NT5D12 faceplate general view Protected DDP faceplate detailed view External connectors and LEDsFunction Designator Type Description Switch Plastic, ESD Card Enable/disable switch YEL Port Out of Service LEDsACT RED RED LEDs Trunk Port Disable LEDsPort 0 Clk Connectors ACT LEDs Port 1 Clk Connectors NT5D12 Cable requirements DDP power requirements Voltage Source Current DDP without NT5D16AA Trunk Tip/Ring cables Cable Name Description Color Pins J5 Pins J2, J3 NT5D16AA cable pins NTCG03AA, NTCG03AB, NTCG03AC, or NTCG03AD MSDL/DCHI cables External Dchi cable External Msdl cable DDP cable for systems with an I/O panel Clock Free run non-tracking mode Automatic clock recovery Clock Controller options- summary CC Option CPU Type To Clock Controller Option 4 Clock Controller options description Clock Option Clock Controller Option Clock Controller Option Clock Controller Option Clock Controller Option Install the NT6D11AB, NT6D11AE, NT6D11AF DCH DCH installation Protocol selection Set up the NT6D11AB, NT6D11AE, NT6D11AF DchiDIP switch settings NT6D11 DIP switches Port 1 settings Mode Emulates Switch setting Valid switch combinationsProtocol selection switch settings Switch Setting Port 0 settings Mode Switch setting NT6D11 DCH with ISL high-speed programming jumper settings Jumper settings Port 0 mode selection Port Mode Switch Setting Port addressing modes Port 0 Mode selectionPort 1 mode selection NT6D11 DCH with ISL low-speed programming jumper settings SW2.1 SW2.2 Synchronous, D-channel, standard addressing Port 1 mode selection Port Mode Switch Setting 16-31 32-47 48-63 64-79 80-95 96-111 112-127 Install the NT6D11AB, NT6D11AE, NT6D11AF DchiPort Address Switch Setting Half Group No Device No S10 Procedure Install the NT6D11AB, NT6D11AE, NT6D11AF DCH Remove the NT6D11AB, NT6D11AE, NT6D11AF DCH Procedure Remove the NT6D11AB, NT6D11AE, NT6D11AF DCH Procedure Install the QPC757 Dchi Install the QPC757 DCH End Port address switch settings SW3 SW4Off Procedure Remove the QPC757 DCH Channel parameter downloadingRemove the QPC757 Dchi Install NTBK51 Ddch on NT5D97 dual-port DTI2/PRI2 card NTBK51 Ddch installation and removal Remove NTBK51 Ddch from NT5D97 dual-port DTI2/PRI2 card Service Interruption Install NTBK51 Ddch on NT5D12 dual-port DTI/PRI Remove NTBK51 Ddch from NT5D12 dual-port DTI/PRI Msdl installation for all systems Install the MsdlProcedure Install the Msdl card Msdl installation for all systems RS-232-D RS-422-A DTE Msdl card layout Msdl switch settings Port 0-SW4 Port 0-SW8O o o o o o o o o o o o o o o o RS-232-D RS-422-A DTE RS-422-A DCE Port 1-SW3 Port 1-SW7 RS-232-D RS-422-A DTE RS-422-A DCE Port 3-SW1 Port 3-SW5 Procedure Replace the Msdl cardReplace the Msdl RS-422-A DCE Port 2-SW2 Port 2-SW6 End Msdl installation for all systems PRI circuit pack locations NT8D72 and QPC720 PRI card installation Cable requirements Cable requirements 104 NT8D72 and QPC720 PRI card installation Cable requirements 106 NT8D72 and QPC720 PRI card installation Cable requirements 108 NT8D72 and QPC720 PRI card installation Cable requirements 110 NT8D72 and QPC720 PRI card installation Cable requirements 112 NT8D72 and QPC720 PRI card installation QPC720 Multi Group cabling without an echo canceller Msdl PRI card Dchi Cable From Des ConFor single-group only QCAD125 QCAD133 QCAD110Jctr Msdl QCAD128 QPC471 CC-0 CC-1 Clock controller NT8D75xx QPC775 Back-up PRI card Patch Panel RS-232 Echo Cance LlerQPC720 NT6D80 For single group only Cable From Des Con Comments QPC47QCP77 QCAD328 Switch settings Switch settings Switch 3 options for PRI with ESF Install NT8D72 and QPC720 PRI cards on Large Systems Half GroupNT6D39 CPU/NET Remove NT8D72 and QPC720 PRI cards from Large Systems Procedure Install an additional network shelf 126 NT8D72 and QPC720 PRI card installation NT5D97 circuit card locations NT5D97 Dual-port DTI2/PRI2 installation and removal NT5D97AD loops conﬁguration Loop Port deﬁnitionsNT5D97AA/AB loops conﬁguration Loop DTI2 PRI2 Mounted on the face plate Ring Ground NT5D97AA/AB DIP switch settingsDIP switch settings for NT5D97AA/AB Card Trunks Port ENB/DSB DIP switches for NT5D97AA/AB OFF 120 ohm Transmission modeOFF Loop operates in the DTI2 mode Line build out OFF-Ring line is not grounded Ring ground switches for NT5D97AA/ABReceiver impedance 120 ohm Channel daughterboard address See table For future use Selections of the NTBK51AA D-channel NT5D97AD DIP switch settings ENB/DSB mounted on the face Plate Ring Ground S16Dpnss Msdl Dip switches locations for NT5D97AD Trunk interface switches for NT5D97AD Trunk 0 switches Ring ground switches for NT5D97AD Trunk 1 switches for NT5D97AD NTBK51AA DCH switches for NT5D97AD Switch number Function Msdl external cardS91-10 For future use S81-10 Install the NT5D97 DDP2 Switch Setting Dnum LDProcedure Install the NT5D97 on Large Systems Remove the NT5D97 DDP2 140 NT5D97 Dual-port DTI2/PRI2 installation and removal Conﬁgure the NT5D97 DDP2 Procedure Remove the NT5D97 from Large Systems 142 NT5D97 Dual-port DTI2/PRI2 installation and removal NT5D12 circuit card locations NT5D12 Dual-port DTI/PRI card installation DTI DTI PRI On SF NT5D12 switch settingsGeneral Purpose Switches Trunk interface switches Transmission Mode 120 Ring ground switches15 dB 100 DCH mode and address select switches OFF Ring line is not groundedOFF Msdl or Dchi card 148 NT5D12 Dual-port DTI/PRI card installation Switch functional areas on the NT5D12 NT5D12 switch default settings Install the NT5D12 DDP Procedure Install the NT5D12 on Large Systems Remove the NT5D12 DDP Procedure Remove the NT5D12 DDP Conﬁgure the NT5D12 DDP 154 NT5D12 Dual-port DTI/PRI card installation Clock Controller description and installation Need for synchronization Description NTRB53 Clock Controller Supported Clock Controllers Mesosynchronous operation QPC471 and QPC775 Clock ControllersSynchronization methods Plesiosynchronous operation Hierarchical Synchronization Hierarchical synchronization Frame slip Stratum levels Guidelines Example 1, Isolated Private Network Description Example 4, Alternate Clocking from the same CO Example 5, digital connection to the CO Example 6, Complex Isolated Private Network Example 7, Network Clocking with MUX Modes of operation Installation procedures Small System Clock Controller daughterboardDetermine slots and shelves Single Group Multi Group NTDA35 Network Module Set switchesClock Controller switch settings for QPC471 vintage H Clock Controller shelves and slots System Shelf Slots Clock Controller switch settings for QPC775 System Clock Controller switch settings for NTRB53Half Group, Single Group Start the Clock Controller Clock Controller commandsLD 39 commands with the NTRB53 Clock Controller Command Description Clock Controller description and installation Frun Trck PCKFor primary For secondary End Scpu Procedure Remove old equipmentSwitch cores DIS CC x Disable system clock controller where x = 0 or ENL CC x Enable clock controller card, where x = 0 or Procedure Installing new equipment Rcnt Ssck Reset alarm counters of all digital cards Switch system clock from active to standbySwck ISL conﬁgurations ISL installationShared mode Dedicated mode Dchi switch settings Msdl switch settings MSDL/ISL settings Shared mode Dedicated mode using leased line ISL in shared modeISL dedicated mode, using leased line Dedicated mode using dialup modem Install a modem for ISL applicationsISL dedicated mode using dialup Hayes Smartmodem Stored profile Telephone numbersZ0=ATDT7414011 Z1= Z2= Z3= Dedicated mode using PRI/DTI trunks ISL dedicated mode, using dialup Hayes SmartmodemZ0= Z1= Z2= Z3= ISL dedicated mode using PRI/DTI trunk QMT11 switch settings QMT21C switch settings QMT8 switch settings Procedure Install ISL in dedicated mode ISL installationInstall ISL in dedicated mode digital and analog Install ISL in shared mode USR = SHA Echo canceller installation Echo canceller operating parametersEcho canceller initialization procedures Electromagnetic Interference PRI to Echo canceller pin assignments PRI to echo canceller cabling Echo canceller installation Circuit cards Mb PRI implementationOverview Hardware requirements Media Gateway/Media Gateway Expansion Channel Service Units CSUHardware description Cables Card Slot NTRB21 Tmdi cardShelf slot assignments Logical NTRB21 Tmdi card faceplate NTAK09 DTI/PRI circuit card NTAK09 DTI/PRI circuit card NTAK20 Clock Controller CC daughterboard Clocking modes Clock controller Shelf slot assignmentClock controller LED states Clock controller LEDs NTAK93 D-channel Handler Interface Dchi daughterboard Shelf slot assignments for NTRB21, NTAK09 and NTAK20 NTBK51BA Downloadable D-channel Ddch daughterboard Install PRI hardwareInstall/remove daughterboard on the NTRB21 Tmdi card Procedure Mounting the NTAK20 daughterboard on the NTRB21 Insert/remove the NTRB21 Tmdi card NTAK20 daughterboard installation on the NTRB21 PRT CFN in LD Procedure Inserting the NTRB21 Tmdi card Install/remove daughterboards on the NTAK09 DTI/PRI card Procedure Removing the NTRB21 Tmdi cardProcedure Mounting the daughterboards on the NTAK09 Procedure Removing the daughterboards from the NTAK09 LEN Set switches on NTAK09 DTI/PRI cardDaughterboard installation on the NTAK09 NTAK09 switch settings Distance to digital Cross connect Installing the NTAK09 Procedure Installing the NTAK09Procedure Connecting the cables Frame ground Procedure Enabling the NTRB21 Tmdi cardPin Transmit tip to Network Transmit ring to Fgnd Procedure Enabling the NTAK09 DTI/PRI card LD 17 Adding a PRI card Prompt Response Description Procedure Implementing basic PRI Port Type AdanCtyp Dchi Cdno LD 15 Deﬁning a PRI customer Prompt Response Description Prompt Response Description Hnpa NPA Mode PRAIsdn YES PNI Inac YES LD 14 Deﬁning service channels and PRI trunksChty BCH Ctyp CCO RtmbType PRI Feat Syti 218 1.5 Mb PRI implementation Mb DTI implementation DTI hardware DescriptionDTI/PRI Tmdi card Install DTI hardware Set the switchesNTBK04 NTAK09 switch settings Distance to digital Crossconnect Connect the cablesPin Transmit tip to network Transmit ring to Network Procedure Enabling the NTAK09 card Software enable the DTI/PRI cards Enll C Procedure Implementing DTI Is ESF Must match the far end LD 17 Adding a DTI card Prompt Response Description LD 73 Assigning a clock reference source LD 14 Conﬁguring the trunks Prompt Response Description 226 1.5 Mb DTI implementation Mb ISL implementation NTAK02 Using dialup modemsISL in dedicated mode using leased line Leased line requirements Hardware Comments NT8D09 Set line card ISL hardware installation dedicated modeISL in dedicated mode using dialup modem Dial-up modem requirements Hardware Comments Unit J10 Procedure Installing ISL hardwareNTAK02 switch setting Port SDI DCH OFF Dpnss Esdi End Implement dedicated mode Procedure Implementing dedicated modeBasic ISL implementation Clok IFC SL1Dchl RLS LD 15 Enabling Isdn option Prompt Response Description Dtrk YES/NO Mode IsldRout Tktp TIE Islm Implement shared modeChid USR SHA 237 Mb DTI cabling NTAK10 2.0 Mb DTI card Switch S2 Off Up On Down Switch S1 Clock Controller CC conﬁgurationSwitch S2 Carrier impedance conﬁguration Switch S1 Off Up On Down Switch S4 Off Up On Down Switch S3 Mode of operationSwitch S4 Carrier shield grounding Switch S3 Off Up On Down NTBK05CA pinouts NTBK05DA pinouts Color SignalDTI software implementation NTBK05DA pinouts Incoming/Outgoing Calls LD 73 Deﬁning the 2.0 Mb DTI Abcd signaling bit tablesTask summary list LD 17 Adding a 2.0 Mb DTI card Prompt Response Description Callr SezrSezdr Sezvr Rctls BursrCass Clrbs Outgoing Calls LD 73 Deﬁning the 2.0 Mb DTI pad tables OPX PdcaTnls YES no ONP ATO XUTXEM Code Value dB Mb DTI pads Code Value dB AFF Mfao YES noSzni YES no MFF CRC SLP LD 73 Deﬁning the grade of service timers for the DTI cardBPV FAP LD 73 Deﬁning the 2.0 Mb DTI system timers CHG Type RDB Ccgd Digital TIE trunk routes Analog TIE trunk routes LD 14 Deﬁning the associated list of service trunks Nars NcosCDP BARS/NFCR NTBK51 Ddch Mb PRI hardware requirement Circuit card Description Ddch Mb PRI cards NTBK50 2.0 Mb PRI circuit card NTAK79 2.0 Mb PRI circuit card 260 2.0 Mb PRI implementation NTBK51 Downloadable D-Channel Ddch daughterboard Install the NTAK79 PRI card Set the switches on the NTAK79 NTAK79 with switch locationsInspect the NTAK79 circuit card Switch SW4 Carrier shield grounding Switch SW1 Dchi conﬁgurationSwitch SW2 Carrier impedance conﬁguration Switch SW3 Clock controller conﬁguration Switch SW4 Down On Up Off Insert the NTAK79Rx-FGND Rx-OPEN Tx-FGND Tx-OPEN NTAK79 cabling NTBK05DA pinouts From Pin MDF Connector Color Signal Install the NTBK50 PRI card From Pin MDF Transmit coax Receive coax ConnectorProcedure Inspecting the NTBK50 circuit card Set the switches on the NTBK50 Switch SW1 Dchi conﬁguration NTAK93 onlyNTBK50 with switch locations 753/4 1203/4 Down On Up Off Mount the daughterboards on the NTBK50 Step Action Remove the daughterboards from the NTBK50 Daughterboard installation NTBK50 cabling Insert the NTBK50 Task summary PRI software implementation Cabinet 2, 31-39 IP expansion cabinet 3, 41-49 IP expansion PRI2 digital card number, where xx = 1-9 Option 11C mainChange data Cabinet, 11-19 IP expansion cabinet 1, 21-29 IP expansion Ctyp Msdl LDN Xxxx Rcap MSL LD 16 Deﬁning a PRI service route Mode PRIDgpt PRI2 Type PRI2 LD 73 Deﬁning system timers and clock controller parameters LD 73 Deﬁning PRI parameters and thresholds MFF AFF CRCAlrm REG ALT OSG1 RatsMNG1 NCG1 Dset ClrsLD 73 Changing trunk pad category values Feat Pads Pdca TYPE=PRI2 Pad values Code ValueCode Value 282 2.0 Mb PRI implementation ISL hardware requirements ISL in dedicated mode using leased line ISL in shared mode ISL in dedicated mode using dialup modem Procedure Installing the NTAK02 ISL hardware installation Port SW1-3 SW1-4 NTAK02 switch settings Port SW1-1 SW1-2NTAK02 jumper settings Jumper Strap for Unit Location Procedure Setting up the D-channel LD 14 Channel identiﬁer Prompt Response Description LD 17 Shared mode Prompt Response DescriptionISL software implementation LD 16 Interface type Prompt Response Description Conﬁguring basic ISL capability Step Action Lapd YES,NO Message as Clid LD 15 Enable the Isdn option Prompt Response DescriptionPart of setup message for calling line identification 1000E LD 14 Assign a channel identiﬁer LD 16 Enable the ISL option Prompt Response Description 127 Range for Meridian 1 Small System, Media Gateway 1000B 294 2.0 Mb ISL implementation Nonstandard cables Frame Ground NT8D7206, NT8D7207 NT8D7206, NT8D7207 wire list From Color Pack end End Signal QCAD128 wire list From SignalGround GND From SignalQCAD129 wire list Echo PRI Signal From NT8D7205 QCAD133 wire list Color From PRI signal QCAD328 wire list From Signal From Color Pack end End Signal NT8D83 PRI/DTI to I/O cable NT8D74 Clock Controller to InterGroup cableNT8D75 Clock Controller to Clock Controller cable NT8D79 PRI/DTI to Clock Controller cable NT8D85 Network to IPE cable NT8D86 Network to I/O cableNT8D97AX PRI/DTI I/O to MDF cable NTND98 PRI to I/O panel cables NT9J93AD PRI/DTI Echo Canceller to I/O cableNTND26 PRI to Msdl cables NTND27 Msdl to I/O panel cables Nonstandard cables Page Isdn Primary Rate Interface Installation and Commissioning