Nortel Meridian 1 Option 11C Manual
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Nortel Meridian 1 Option 11C Manual

2.0 mb dti/pri
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Meridian 1
Option 11C
2.0 Mb DTI/PRI
Document Number: 553-3011-315
Document Release: Standard 13.00
Date: January 2002
Year Publish FCC TM
Copyright © 1992– 2002 Nortel Networks
All Rights Reserved
Printed in Canada
Information is subject to change without notice. Nortel Networks reserves the right to make changes in design
or components as progress in engineering and manufacturing may warrant. This equipment has been tested
and found to comply with the limits for a Class A digital device pursuant to Part 15 of the FCC rules, and the
radio interference regulations of Industry Canada. These limits are designed to provide reasonable protection
against harmful interference when the equipment is operated in a commercial environment. This equipment
generates, uses and can radiate radio frequency energy, and if not installed and used in accordance with the
instruction manual, may cause harmful interference to radio communications. Operation of this equipment in a
residential area is likely to cause harmful interference in which case the user will be required to correct the
interference at their own expense.
SL-1 and Meridian 1 are trademarks of Nortel Networks.

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  • Page 1 All Rights Reserved Printed in Canada Information is subject to change without notice. Nortel Networks reserves the right to make changes in design or components as progress in engineering and manufacturing may warrant. This equipment has been tested and found to comply with the limits for a Class A digital device pursuant to Part 15 of the FCC rules, and the radio interference regulations of Industry Canada.
  • Page 3 Page 3 of 126 Revision history January 2002 Standard 13.00. This global document is up-issued for Release 25.40. December 2000 Standard 12.00. This global document is up-issued to include updates and changes required for Option 11C IP Expansion field trials with Release 25.3x software.
  • Page 4 Page 4 of 126 Revision History July 1994 Issue 4.00, Standard, published for Generic X11 Release 19.0x February 1994 Issue 3.00, Standard, published for Generic X11 Release 18.0x January 1993 Issue 2.00, Standard, published for Generic X11 Release 17.0x April 1992 Issue 1.00, Standard, published for Generic X11 Release 16.0x 553-3011-315 Standard 13.00...
  • Page 5 Page 5 of 126 Contents About this guide ......ISDN features ......2.0 Mb DTI Implementation .
  • Page 6 Page 6 of 126 Contents 553-3011-315 Standard 13.00 January 2002...
  • Page 7 About this guide This document contains specifc information on how to configure 2.0 Mb ISDN DTI/PRI on Meridian 1 Option 11C. For general information on ISDN, and for information on software features, refer to X11 Networking Features and Services (553-2901-301).
  • Page 8 Page 8 of 126 About this guide 553-3011-315 Standard 13.00 January 2002...
  • Page 9 Page 9 of 126 ISDN features For a detailed description and implementation information, see the X11 Networking Features and Services (553-2901-301). For a detailed description and implementation information for DPNSS1, see the DPNSS1: Features and Services Guide (553-3921-300). For a detailed description and implementation information for DASS2, see the DASS: Features and Services Guide (553-3911-300).
  • Page 10 Page 10 of 126 ISDN features 553-3011-315 Standard 13.00 January 2002...
  • Page 11 Task summary list ......... Overview This chapter provides the information required to install the 2.0 Mb DTI card in Meridian 1 Option 11C systems. It includes information for: • hardware installation •...
  • Page 12 Page 12 of 126 2.0 Mb DTI Implementation Hardware Requirements Hardware requirements for 2.0 Mb DTI are as follows: • 2.0 Mb DTI Circuit card - NTAK10 (a Clock Controller is incorporated into the circuit card) • CEPT Cable – NTBK05DA (120 ¾ twisted pair – 6.15 m length) CEPT Cable –...
  • Page 13 2.0 Mb DTI Implementation Page 13 of 126 NTAK10 2.0 Mb DTI card The 2.0 Mb Digital Trunk Interface card provides the physical interface for the digital E-1 carrier on the Option 11C system. The card includes an on-board clock controller and is installed in slots 1 through 9 in the main cabinet.
  • Page 14 Page 14 of 126 2.0 Mb DTI Implementation Switch S1—Clock Controller Configuration This switch enables/disables the on-board Clock Controller. Table 1 Switch S1 Switch Off (Up) On (Down) S1-1 Spare Spare S1-2 Clock Controller Clock Controller Enabled Disabled Switch S2—Carrier Impedance Configuration This switch sets the carrier impedance to either 120¾...
  • Page 15 2.0 Mb DTI Implementation Page 15 of 126 Switch S4—Carrier Shield Grounding This switch allows for the selective shield grounding of the Tx and/or Rx pairs of the carrier cable. Closing the switch (down position) applies Frame Ground (FGND) to the coaxial carrier cable shield, creating a 75¾ unbalanced configuration.
  • Page 16 Page 16 of 126 2.0 Mb DTI Implementation NTBK05DA pinouts The pinouts for the NTBK05DA cable are as follows: Table 5 NTBK05DA pinouts From: 50 pin MDF 9 pin connector connector Colour Signal pin 23 pin 6 Black pin 48 pin 7 White pin 50...
  • Page 17 DTI software programming The following procedure describes the process required to program basic 2.0 Mb DTI on the Meridian 1 Option 11C main and IP expansion cabinets. Task summary list The following is a summary of the tasks in this section: LD 17 –...
  • Page 18 Page 18 of 126 2.0 Mb DTI Implementation Prompt Response Description FEAT ABCD ABCD bit signaling category. SICA 2-16 Signaling category DFLT (1)-16 Default signaling category to be used for default values JDMI defaults to 16 with <CR> Incoming/Outgoing Calls: IDLE(S) abcd (Send) idle signal bits...
  • Page 19 2.0 Mb DTI Implementation Page 19 of 126 Prompt Response Description If NRCV(S) signal not required P EOSF(S) abcd End of selection free (send) If EOSF(S) not required TIME (100)-150 Time for EOSF(S) in milliseconds P EOSB(S) abcd End of selection busy (send) If EOSB(S) not required TIME (100)-150...
  • Page 20 Page 20 of 126 2.0 Mb DTI Implementation Prompt Response Description If RCTL(S) not required Note: Prompted only when CLRB is unused or is defined the same as IDLE. TIME 100-(150)-300 Time value is stored in multiples of 10 milliseconds. R RCOD(S) abcd Release Control Originating party Disconnect.
  • Page 21 2.0 Mb DTI Implementation Page 21 of 126 Prompt Response Description TIME xxx yyy Minimum and maximum time range for OPRS(R) in milliseconds. xxx = 8-(48)-2040 yyy = xxx-(128)-2040 If SEZV(S) not required SEZA(R) abcd Seize acknowledgment (receive) signal If SEZA(R) not required P WNKS(R) abcd Wink start pulsed seize acknowledgment (receive) signal...
  • Page 22 Page 22 of 126 2.0 Mb DTI Implementation Prompt Response Description If RCTL(R) not required TIME 96-(128)-320 Time value stored in multiples of 8 milliseconds 96-(256)-320 P NXFR(R) abcd Network transfer If not required P ESNW(R) abcd ESN wink signal If ESNW(R) not required P CAS(R) abcd...
  • Page 23 2.0 Mb DTI Implementation Page 23 of 126 LD 73 – Define the 2.0 Mb DTI pad tables. Prompt Response Description Add or change Digital Trunk Interface data block TYPE DTI2 2.0 Mb DTI FEAT Request the digital pad feature. PDCA 1-16 PAD Category table.
  • Page 24 Page 24 of 126 2.0 Mb DTI Implementation DFLT (1)-16 For NEW only. The table is used for default values. The following prompts define the pad levels. The receiving pad code is r and the transmission pad code is t. These entries have the range 0-15.
  • Page 25 2.0 Mb DTI Implementation Page 25 of 126 Analogue CO trunk (prompted only if the 1.5/2.0 Mb Gateway feature is equipped and TYPE=DTI2) Analogue TIE trunk (prompted only if the 1.5/2.0 Mb Gateway feature is equipped and TYPE=DTI2) The following pads are available for the 2.0 Mb DTI card. Their respective codes are also given.
  • Page 26 Page 26 of 126 2.0 Mb DTI Implementation If METR(R) signal not required EDGE PPM bit counted when changed from 1 to 0. PPM bit counted when changed from 0 to 1. TIME 40-(240)-480 Maximum time METR signal can be on in milliseconds. SASU 0-(1920)-8064 Seize acknowledge supervision period in milliseconds.
  • Page 27 2.0 Mb DTI Implementation Page 27 of 126 • nnnM = time in minutes where nnn = 1-240 • nnH = time in hours where nn = 1-24 Prompt Response Description NC mt dt ct ot Cyclic redundancy check error counts NC=Error count values are in the range 1-255 mt = Maintenance threshold time (MNT) dt = No new data calls threshold time (NNDC)
  • Page 28 Page 28 of 126 2.0 Mb DTI Implementation Prompt Response Description T2 mt dt ct ot Group 2 error thresholds. This is the maximum amount of time that can occur before software checks the associated thresholds of 120 to 32,640 msec and rounds it to the closest multiple of 128 msec.
  • Page 29 2.0 Mb DTI Implementation Page 29 of 126 Prompt Response Description SREF CC0 Slot number of the DTI2 card containing the primary clock reference for the main cabinet. 11-19 Slot number of the DTI2 card containing clock controller 1. PREF CC1 11-19 Slot number of the DTI2 card containing the primary clock reference for the IP expansion cabinet 1.
  • Page 30 Page 30 of 126 2.0 Mb DTI Implementation LD 16 – Configure the service routes. Prompt Response Description Add or Change Route data block TYPE Route data block CUST 0-31 Customer number ROUT 0-30 Route number TKTP Service routes allowed with ISDN Tie trunk route Central office trunk Direct Inward Dial trunk...
  • Page 31 2.0 Mb DTI Implementation Page 31 of 126 Prompt Response Description SRCH (LIN) Linear search, or round-robin search used for outgoing trunks ACOD xxxx Trunk route access code TARG 1-15 Trunk access restriction group for routes OABS Outgoing digit(s) to be absorbed INST (0)-999 Digits to be inserted...
  • Page 32 Page 32 of 126 2.0 Mb DTI Implementation LD 14 – Define the associated list of service trunks. Prompt Response Description Add or Change Trunk data block TYPE Tie trunk route Central Office trunk data block Direct Inward Dial trunk data block CHID 1-382 Channel ID for this trunk...
  • Page 33 2.0 Mb DTI Implementation Page 33 of 126 NCOS Network class-of-service group number: BARS/NFCR 0-15 NARS RTMB 0-127 1-510 Route number and member number NITE xxxx Night-service directory number TGAR (0)-15 Trunk group access restriction Class-of-service restrictions Note: If DIP option is selected, a new SLCA table must be defined in LD 73.
  • Page 34 Page 34 of 126 2.0 Mb DTI Implementation 553-3011-315 Standard 13.00 January 2002...

  • Page 35: Table Of Contents

    Page 35 of 126 2.0 Mb PRI Implementation Contents This section contains information on the following topics: Reference list ..........Overview .

  • Page 36: Reference List

    Option 11C and 11C Mini Technical Reference Guide (553-3011-100) • Option 11C Planning and Installation (553-3021-210) Overview This chapter provides the information required to install 2.0 Mb PRI on a Meridian 1 Option 11C system. It includes information for: • hardware installation • software programming With the introduction of Release 25.3x, the 2.0 Mb PRI card is now supported...

  • Page 37: Hardware Requirements

    2.0 Mb PRI Implementation Page 37 of 126 Hardware requirements Circuit cards To implement 2.0 Mb PRI on the Meridian 1 Option 11C, an NTAK79 or an NTBK50 PRI card plus associated daughterboards is required. Table 7 2.0 Mb PRI hardware requirement...

  • Page 38: Cables

    Page 38 of 126 2.0 Mb PRI Implementation Cables The following cables are required for PRI connections: • CEPT Cable - NTBK05DA (120 ¾ twisted pair—6.15 m length) • CEPT Cable - NTBK05CA (75 ¾ coaxial—6.15 m length) Hardware description 2.0 Mb PRI cards Two PRI cards are available on the Option 11C system: •...

  • Page 39: Ntak20 Clock Controller (Cc) Daughterboard

    2.0 Mb PRI Implementation Page 39 of 126 For information on the NTAK79 faceplate LEDs, refer to “PRI Maintenance” on page 85 of this guide. NTBK50 2.0 Mb PRI circuit card The 2.0 Mb Primary Rate Interface card provides the physical interface for the digital E-1 carrier on the Option 11C system.

  • Page 40: Ntak93 D-Channel Handler Interface (Dchi) Daughterboard

    Page 40 of 126 2.0 Mb PRI Implementation IMPORTANT Every cabinet that contains a digital trunk must contain a clock controller. If a system is equipped with digital trunks, it is recommended that at least one digital trunk be placed in the main cabinet.

  • Page 41: Ntbk51 Downloadable D-Channel Daughterboard

    2.0 Mb PRI Implementation Page 41 of 126 A minimum of one NTAK93 is required for each PRI link. If more than one PRI link is connected to the same end location, a single DCHI circuit card can support up to a maximum of 8 PRI connections for the Option 11C system. This allows for the support of 240 B-Channels or PRI trunks.

  • Page 42: Inspect The Ntak79 Circuit Card

    Page 42 of 126 2.0 Mb PRI Implementation Inspect the NTAK79 circuit card • Locate the NTAK79 2.0 Mb circuit card and carefully remove it from its packaging. • Inspect the circuit card for any visible damage which may have occurred during shipping.
  • Page 43 2.0 Mb PRI Implementation Page 43 of 126 Figure 2 NTAK79 with Switch locations NTAK79 Faceplate Switch 3 Switch 1 LEDs Switch 2 Switch 4 Jack 553-7869.EPS Set the switches found on the circuit card as per the requirements of your specific installation: Option 11C 2.0 Mb DTI/PRI...
  • Page 44 Page 44 of 126 2.0 Mb PRI Implementation Switch SW1—DCHI Configuration This switch enables/disables the on-board DCHI and sets the operating mode of the DCHI. For the U.K., use DPNSS1 mode. For all other countries, use Q.931 mode. Table 8 Switch SW1 Switch Down (On)

  • Page 45: Insert The Ntak79

    2.0 Mb PRI Implementation Page 45 of 126 Switch SW4—Carrier Shield Grounding This switch allows for the selective grounding of the Tx / Rx pairs of the carrier cable. Closing the switch (down position) applies Frame Ground (FGND) to the coaxial carrier cable shield, creating a 75¾ unbalanced configuration.
  • Page 46 Page 46 of 126 2.0 Mb PRI Implementation Figure 3 NTAK79 Cabling NTBKO5DA 120Ω Twisted Pair (6.15 m) OPTION 11 To 2.048 2 Mb PRI Mpbs Carrier Cross Connect 2Mb DTI NTBKO5CA 75Ω Coax Pair (6.15 m) 553-8320.EPS NTBK05DA pinouts The pinouts for the NTBK05DA cable are as follows: Table 12 NTBK05DA pinouts...

  • Page 47: Install The Ntbk50 Pri Card

    2.0 Mb PRI Implementation Page 47 of 126 NTBK05CA pinouts The pinouts for the NTBK05CA cable are as follows: Table 13 NTBK05CA pinouts From: 50 pin MDF Transmit coax Receive coax 50 pin MDF connector connector connector connector pin 23 Inner conductor —...

  • Page 48: Inspect The Ntbk50 Circuit Card

    Page 48 of 126 2.0 Mb PRI Implementation Inspect the NTBK50 circuit card • Locate the NTBK50 2.0 Mb circuit card plus associated daughterboard(s) and carefully remove them from their packaging. • Inspect the circuit cards for any visible damage which may have occurred during shipping.
  • Page 49 2.0 Mb PRI Implementation Page 49 of 126 Set the switches found on the circuit card as per the requirements of your specific installation. Switch SW1—DCHI Configuration (NTAK93 only) This switch enables/disables the DCHI and sets the operating mode of the DCHI.

  • Page 50: Mount The Daughterboards On The Ntbk50

    Page 50 of 126 2.0 Mb PRI Implementation Table 16 Switch SW3 Switch Down (On) Up (Off) SW 4-1 Rx—FGND Rx—OPEN SW 4-2 Tx—FGND Tx—OPEN Note: The usual method is to ground the outer conductor of the receive coax signal. Mount the daughterboards on the NTBK50 Use the following procedure to mount and remove the NTAK20 CC and the NTBK51 DDCH or NTAK93 DCHI daughterboards onto the NTBK50 PRI.
  • Page 51 2.0 Mb PRI Implementation Page 51 of 126 Figure 5 Daughterboard installation Stiffeners NTAK20 Clock Controller Connector Sockets LEDs Bantam Jacks NTAK93 or NTBK51 D-Channel Interface 553-7872 Standoffs 553-7872.EPS Option 11C 2.0 Mb DTI/PRI...

  • Page 52: Insert The Ntbk50

    Page 52 of 126 2.0 Mb PRI Implementation Remove the daughterboards from the NTBK50 Use these guidelines to remove the NTAK20 and NTBK51 or NTAK93 from the NTBK50 PRI card. Because of the physical layout of the mother and daughterboards, the NTAK20 should be removed before the NTAK93 or NTBK51.
  • Page 53 2.0 Mb PRI Implementation Page 53 of 126 Figure 6 NTBK50 Cabling NTBKO5AA 120Ω Twisted Pair OPTION 11 To 2.048 Mpbs Carrier NTBK50 Cross Connect NTBKO5CA 75Ω Coax Pair 553-7873.EPS NTBK05DA pinouts The pinouts for the NTBK05DA cable are as follows: Table 17 NTBK05DA pinouts From:...
  • Page 54 — PRI software programming The following information describes the process required to program basic 2.0 Mb PRI on the Meridian 1 Option 11C. PRI cards must be configured before defining the DCH links or PRI applications. Prompts which do not show a response can be left as default. For more information on any of these prompts, refer to Administration (553-3001-311).
  • Page 55 2.0 Mb PRI Implementation Page 55 of 126 LD 16 – Define a PRI service route. LD 14 – Define service channels and PRI trunks. LD 73 – Define system timers and clock controller parameters. LD 73 – Define PRI parameters and thresholds. LD 73 –...
  • Page 56 Page 56 of 126 2.0 Mb PRI Implementation Prompt Response Description D-channel is for ISDN PRI only. Note: 2.0 Mb only supports PRI or SHA user mode. Interface type. DCHL PRI card number which will be carrying the D-channel. Must match entry made for the "CDNO"...
  • Page 57 2.0 Mb PRI Implementation Page 57 of 126 Prompt Response Description - N201 4(260) Maximum number of octets in information field 1-(7)-32 Maximum number of outstanding unacknowledged frames (NAKS) LD 15 – Define a PRI customer. Prompt Response Description REQ: Add new data Change existing data TYPE...
  • Page 58 Page 58 of 126 2.0 Mb PRI Implementation LD 16 – Define a PRI service route. Prompt Response Description Add new data Change existing data TYPE Route data block TKTP Trunk type. DTRK Digital trunk route DGPT PRI2 2.0 Mb PRI. Prompted only if PRA = YES in LD15. ISDN ISDN option MODE...
  • Page 59 2.0 Mb PRI Implementation Page 59 of 126 c ch Enter the PRI trunk card (c) and channel number (ch). c = 1-9 for main cabinet, 11-19 for IP expansion cabinet 1, 21-29 for IP expansion cabinet 2, 31-39 for IP expansion cabinet 3, and 41-49 for IP expansion cabinet 4.
  • Page 60 Page 60 of 126 2.0 Mb PRI Implementation PREF CC4 41-49 Card slot number of PRI2 card containing the prImary clock reference for IP Expansion cabinet 4. SREF CC4 41-49 Card slot number of PRI2 card containing the secondary clock reference for IP Expansion cabinet 4.
  • Page 61 2.0 Mb PRI Implementation Page 61 of 126 Prompt Response Description T2 mt dt ct ot Group 2 error thresholds. This is the maximum amount of time that can occur before software checks the associated thresholds of 120 to 32,640 msec and rounds it to the closest multiple of 128 msec.
  • Page 62 Page 62 of 126 2.0 Mb PRI Implementation LD 73 – Change trunk pad category values. Prompt Response Description Change data TYPE PRI2 2.0 Mb PRI FEAT PADS PDCA PAD table-0 is default and is hard coded The following prompts define the pad levels. The receiving pad code is r and the transmission pad code is t.
  • Page 63 2.0 Mb PRI Implementation Page 63 of 126 Table 19 shows the pads available to 2.0 Mb PRI. Positive dB represents loss and negative dB represents gain. Table 19 Pad Values code value +1.0 +2.0 +3.0 +4.0 +5.0 +6.0 +7.0 (dB) code value...
  • Page 64 Page 64 of 126 2.0 Mb PRI Implementation When configuring the DSL for ISDN BRI trunking in LD 27, the response to the MISP prompt is: 1-9 (main cabinet), 11-19 (IP expansion cabinet1), 21-29 (IP expansion cabinet 2), 31-39 (IP expansion cabinet 3), 41-49 (IP expansion cabinet 4.) 553-3011-315 Standard 13.00...
  • Page 65 Page 65 of 126 DTI Maintenance Contents This section contains information on the following topics: Overview ..........Replace the NTAK10 2.0 Mb DTI card .

  • Page 66: Replace The Ntak10 2.0 Mb Dti Card

    Page 66 of 126 DTI Maintenance Option 11C DTI operation is monitored and reported on through maintenance messages, out-of-service alarms, and circuit card faceplate LEDs. Option 11C maintenance provides several tools, either manual or automatic, for maintaining effective DTI operation. These tools are service change and maintenance commands that are accessible through the software overlays and resident diagnostic routines.

  • Page 67: Monitor Option 11C Dti Operation

    DTI Maintenance Page 67 of 126 Software enable all NTAK10 2.0 Mb DTI cards using LD 60 (command ENLL N, where N is the 2.0 Mb DTI card number). Software enable the clock controller using LD 60 (ENL CC 0). Enable clock tracking on primary digital loop by issuing the following command TRCK PCK.

  • Page 68: Grade-Of-Service Messages

    Page 68 of 126 DTI Maintenance Grade-of-Service messages Grade-of-Service messages (DTA XXX) provide near and far end switch status. A summary of these status messages is given in Table 21: Table 21 Grade-of-Service messages Status 2.0 Mb DTI Capability Acceptable Both incoming and outgoing calls allowed Maintenance...
  • Page 69 DTI Maintenance Page 69 of 126 Group II alarm types are listed from high to low priority. A Group II alarm type may not be reported when a greater type is detected. Alarm Indication Signal (AIS)—Far End Alarm Loss of Frame Alignment Signal (LFAS)—Near End Alarm Loss of Multiframe Alignment Signal (LMAS)—Near End Alarm Loss of CRC-4 Multiframe Alignment Signal (CFAS)—Near End Alarm Remote Alarm Indication (RAI, B3)—Far End Alarm...
  • Page 70 Page 70 of 126 DTI Maintenance The primary difference between BPV and CRC is that bipolar violation tracking indicates errors in the local span, while CRC indicates errors on an end-to-end span. For example, on a satellite link, BPV only detects errors in the span between the Meridian 1 and the satellite connection.
  • Page 71 DTI Maintenance Page 71 of 126 Clock synchronization can be either tracking, on the primary or secondary reference clock, or free run (non-tracking). In LD 73 (prompts PREF and SREF), the 2.0 Mb DTI which supports the active clock controller is defined as the primary clock reference.
  • Page 72 Page 72 of 126 DTI Maintenance With respect to the reception of AIS in TS16, AIS 64 Kbits must be detected when multiframe alignment has been lost and the binary content of TS16 is 95 percent 1, counting on 256 or 512 bits. When AIS in TS16 is detected, then bit 6 of outgoing TS16 frame 0 should be set.

  • Page 73: Ntak10 Faceplate Leds

    DTI Maintenance Page 73 of 126 Alarm threshold recommendations for digital trunks If a digital trunk is present in an IP Expansion cabinet, link outages due to data network performance degradation between main cabinet and expansion cabinet will cause alarms on the far end of the digital trunk. If link outages are frequent, alarm thresholds on the far end may need to be increased to prevent the trunk from being placed in a state requiring manual intervention to recover.

  • Page 74: Option 11C Dti Maintenance Tools

    Page 74 of 126 DTI Maintenance Table 23 NTAK10 Faceplate LEDS (Part 2 of 2) NTAK10 2.0 Mb DTI is not in loop-back mode On (Red) The clock controller is switched on and disabled On (Green) The clock controller is switched on and is either locked to a reference or is in free run mode Flashing...

  • Page 75: Clock Controller Commands

    DTI Maintenance Page 75 of 126 ENLL L Enable 2.0 Mb DTI LCNT (L) List alarm counters RCNT (L) Reset alarm counters SLFT (L) Do 2.0 Mb DTI self-test STAT (L) List 2.0 Mb DTI status Clock Controller commands Below is a quick reference list of clock controller commands in LD 60. Command Action DIS CC 0...
  • Page 76 Page 76 of 126 DTI Maintenance Before this test is run, the loop must be disabled as follows: Disable the NTAK10 using LD 60: LD 60 DISL L CH Run the self-test using LD 60: LD 60 SLFT L (for the entire loop) SLFT L CH (for a specific channel) Local loopback may also be performed on a per-channel basis without having to disable the entire loop.
  • Page 77 DTI Maintenance Page 77 of 126 Table 24 Self-test failure codes for NTAK10 2.0 Mb DTI (Part 1 of 5) DTI009 loop DTI/PRI loop or channel failed hardware self test. For DTI009 L M E, the output data is L = loop M = N for NI microprocessor M = C for CI microprocessor E = error code for debug purposes.
  • Page 78 Page 78 of 126 DTI Maintenance Table 24 Self-test failure codes for NTAK10 2.0 Mb DTI (Part 2 of 5) 50 = External RAM in range 880h-8EFH failed (MESSIN queue) 51 = Internal RAM test failed. 52 = Pad RAM test failed. 53 = External RAM test failed.
  • Page 79 DTI Maintenance Page 79 of 126 Table 24 Self-test failure codes for NTAK10 2.0 Mb DTI (Part 3 of 5) 132 = Attempt was made to enable outpulsing TS 0 or TS16. 133 = A Messout 31 has been received for TS 0 or TS 16 with the pulse hold time not = 0.
  • Page 80 Page 80 of 126 DTI Maintenance Table 24 Self-test failure codes for NTAK10 2.0 Mb DTI (Part 4 of 5) 148 = The TN of MESSOUT 29 received was not that of TS 0. 149 = Upon enabling the DTI card, the CI-1 was unable to write Frame 0, TS 16 with '0B'.
  • Page 81 DTI Maintenance Page 81 of 126 Table 24 Self-test failure codes for NTAK10 2.0 Mb DTI (Part 5 of 5) 149 = Upon enabling the DTI card, the CI-1 was unable to write Frame 0, TS 16 with '0B'. 150 = MESSOUT 26 was received with the PPM counting bit (abcd) all equal to zero.
  • Page 82 Page 82 of 126 DTI Maintenance The procedure for a near-end per-loop loopback test is as follows: Procedure Overlay Command Disable the 2.0 Mb DTI card LD 60 DISL L Run the loopback test LD 60 RMST L The procedure for a near-end per-channel loopback test is as follows: Procedure Overlay Command...
  • Page 83 DTI Maintenance Page 83 of 126 Far End Trunk loopback test The far end trunk loopback test checks the integrity of the 2.0 Mb link from the far end to the carrier interface of the 2.0 Mb DTI (it does not test the 2.0 Mb DTI card).
  • Page 84 Page 84 of 126 DTI Maintenance Figure 10 Far End Trunk Loopback NEAR END FAR END Option 11 Far End Switch NTAK10 RLBK L (per loop— loop disabled) or Per loop or per Per loop or per RLBK L CH (per channel—channel channeltest run channel test run disabled)
  • Page 85 Page 85 of 126 PRI Maintenance Contents This section contains information on the following topics: Reference list ..........Overview .

  • Page 86: Reference List

    Page 86 of 126 PRI Maintenance 2.0 Mb PRI self test ......... 107 2.0 Mb PRI automatic loop test .

  • Page 87: Enable The Ntbk50 Pri

    PRI Maintenance Page 87 of 126 Enable the NTBK50 PRI If using the NTBK51 DDCH daughterboard, enable the DDCH in LD 96 by issuing the command ENL MSDL X. Software enable all 2.0 Mb PRI cards using LD 60 (command ENLL N). The DCHI will enable automatically from the enable PRI command.

  • Page 88: Monitor Option 11C Pri Operation

    Page 88 of 126 PRI Maintenance Monitor Option 11C PRI operation Maintenance messages Service messages report on near and far end switch status. Both service and service acknowledge messages are supported on PRI B-channels and ISL channels. These messages are used for backup D-channel and D-channel sanity polling.
  • Page 89 PRI Maintenance Page 89 of 126 Service message function Service messages are used to monitor the following: • D-channel establishment • D-channel sanity polling • B-channel or ISL status change • Channel status audit. D-channel establishment When the D-channel establishes, the B-channel status is supported by sending service messages for each B-channel controlled by a D-channel.

  • Page 90: 2.0 Mb Pri Error Detection

    Page 90 of 126 PRI Maintenance • DIS SERV N: turns off the support of service and service acknowledge messages for DCH link N. • STAT SERV (N): displays the current service and service acknowledge message SERV setting for individual DDCH N or for DCHIs. Two new statuses are added for maintenance messages, FE MbSY = Far end maintenance and FE DSBL = Far end disabled.
  • Page 91 PRI Maintenance Page 91 of 126 Figure 11 Bipolar violations Normal Error Error 553-8321.EPS Frame Bit Errors The NTAK79/NTBK50 PRI CEPT PCM-30 stream is structured into a frame of 32 8-bit timeslots. To maintain alignment of this frame structure, alternate timeslot zeros have a specific frame alignment pattern (X0011011).
  • Page 92 Page 92 of 126 PRI Maintenance • BPV = N1•16 • CRC = N1• 4 • FBER = N1• 1 N2 values are not scaled. These parameters may be established in LD 73 on a per card basis, or they can be left at their default values. Parameters N1 and N2 provide for the following error rate thresholds reported to the system: Severely Errored Second: when the number of occurrences of the error...
  • Page 93 PRI Maintenance Page 93 of 126 Program Group I Thresholds To set your LD 73 Group I thresholds, use the following commands. LD 73 – Program Group I Thresholds. Prompt Response Description Request a Change Primary Rate Interface TYPE PRI2 FEAT LPTI Loop Timer...
  • Page 94 Page 94 of 126 PRI Maintenance In the opposite situation, when data bits are written (added) into a buffer at slightly lower rate than that at which they are being read (emptied), eventually the buffer runs dry or underflows. This is also a slip-frame repetition. A 2.0 Mb PRI contains a buffer large enough to contain 2 full frames (256 x 2 = 512 bits), and is normally kept half full (1 frame).
  • Page 95 PRI Maintenance Page 95 of 126 Frame slips have two alarm thresholds as defined in LD 73. They are as follows: Slip - Out of Service Threshold When this threshold (variable count versus variable time) is reached, the PRI card is placed in an out-of-service state. The card automatically returns to a normal state if the slip rate improves after the Group I OOS guard timer expires.
  • Page 96 Page 96 of 126 PRI Maintenance Yellow (Far End) Alarms A Yellow alarm on the 2.0 Mb PRI card indicates that the card is receiving an alarm indication from the far end. This type of alarm may be received in two ways: •...
  • Page 97 PRI Maintenance Page 97 of 126 For example, if the total cumulative time that an error has been present reaches the aggregate time (2.5 sec default) in less than the time set in OOS, the card is put into an out-of-service state. If it took more than the preset time for the error condition to register, the card could be put into NNDC, NNC or MAINT states.

  • Page 98: Ntak79 Faceplate Leds

    Page 98 of 126 PRI Maintenance Alarm threshold recommendations for digital trunks If a digital trunk is present in an IP Expansion cabinet, link outages due to data network performance degradation between main cabinet and expansion cabinet will cause alarms on the far end of the digital trunk. If link outages are frequent, alarm thresholds on the far end may need to be increased to prevent the trunk from being placed in a state requiring manual intervention to recover.
  • Page 99 PRI Maintenance Page 99 of 126 Table 27 NTAK79 faceplate LEDs (Part 2 of 2) On (Green) NTAK79 2.0 Mb PRI is in loop-back mode. NTAK79 2.0 Mb PRI is not in loop-back mode On (Red) The clock controller is switched on and software disabled On (Green) The clock controller is enabled and is...

  • Page 100: Ntbk50 Faceplate Leds

    Page 100 of 126 PRI Maintenance NTBK50 Faceplate LEDs The NTBK50 circuit card has a total of seven faceplate LEDs. Five of the LEDs are directly associated with the operation of the Downloadable D-channel handler and D-channel interface. The remaining two LEDs are associated with the Clock Controller.
  • Page 101 PRI Maintenance Page 101 of 126 State Definition On (Red) The clock controller is software disabled On (Green) The clock controller is enabled and is either locked to a reference or is in free run mode Flashing NTAK20 is equipped and is attempting (Green) to lock (tracking mode) to a reference.

  • Page 102: Option 11C Pri Maintenance Tools

    Page 102 of 126 PRI Maintenance Option 11C PRI maintenance tools Table 29 2.0 Mb PRI commands (LD 60) Command Action DISI L disable 2.0 Mb PRI when idle DISL L force disable PRI ENLL L enable PRI LCNT (L) list alarm counters RCNT (L) reset alarm counters and clear alarms...

  • Page 103: Dchi Commands

    PRI Maintenance Page 103 of 126 DCHI commands D-channel commands are found in LD 96. The following is a quick reference list of D-channel commands: Table 30 DCHI commands Command Action DIS DCHI N disable DCHI port N ENL DCHI N enable DCHI port N EST DCH N establish D-channel N...

  • Page 104: Ddch Commands

    Page 104 of 126 PRI Maintenance DDCH commands Downloadable D-channel commands are found in LD 96. The following is a quick reference list of D-channel commands with minor modification: Table 31 DDCH commands Command Action DIS MSDL X (ALL) Disable DCHI card X ENL MSDL X (FDL, Enable DCHI card X, with or without Force ALL)

  • Page 105: Clock Controller Commands

    PRI Maintenance Page 105 of 126 D-channel status and error conditions are reported as DCH messages. These messages can be found in the X11 Maintenance (553-3001-511). Clock Controller commands Clock Controller commands are accessed using LD 60. The following is a quick reference list of clock controller commands: Table 32 Clock Controller commands...
  • Page 106 Page 106 of 126 PRI Maintenance Failure codes 1-14 are hardware failures on the NTAK79/NTBK50 card. Codes 15-16 may be due to carrier span problems or lack of loopback activation at the far end. Table 33 Self-Test error codes Failure Code Associated Error Self test passed Self test general failure...
  • Page 107 PRI Maintenance Page 107 of 126 2.0 Mb PRI self test This self test can be run manually on a per-loop or per-channel basis using overlay 60. The DCHI/DDCH and 2.0 Mb PRI must be disabled before performing the self-test. Self-test (entire loop) Disable the DCHI/DDCH using: LD 96...
  • Page 108 Page 108 of 126 PRI Maintenance If any of the 30 channels are busy at midnight, the software disables one idle channel, chosen at random, and checks it while the card is enabled. With the ATLP command set to zero, only one channel is tested. The channel tested is randomly selected by software;...
  • Page 109 PRI Maintenance Page 109 of 126 Running the link diagnostic test To run the link diagnostic test on the Meridian 1, use the following procedure: Call a technician at the far end. Ask for loopback mode at that facility. When loop-back mode at the far end is confirmed: •...
  • Page 110 Page 110 of 126 PRI Maintenance Figure 13 2.0 Mb PRI Remote Loopback Test NEAR END FAR END Far End Switch Option 11C NTAK79 NTAK50 RLBK L - this end in loopback RLBK L - test run from this end 553-A0147 Coordinating the remote loopback tests When a technician at the far end asks for loop-back mode on the Meridian 1,...

  • Page 111: Reference List

    Page 111 of 126 ISL Implementation and Maintenance Contents This section contains information on the following topics: Reference list ..........111 Overview .

  • Page 112: Overview

    Page 112 of 126 ISL Implementation and Maintenance Overview This chapter provides the information needed to implement ISL on the Meridian 1 Option 11C system including: • hardware and software installation • programming of components needed to provide basic call service ISDN features are treated separately in the chapter devoted to ISDN feature implementation.

  • Page 113: Isl In Dedicated Mode Using Leased Line

    ISL Implementation and Maintenance Page 113 of 126 Figure 14 ISL in shared Mode Meridian 1 Meridian 1 SL1 Option 11 DCHI D-channel 2MB PRI used for PRI & DCHI • • Analogue/digital TIE trunks ISL in dedicated mode using leased line The following hardware is required: •...

  • Page 114: Isl In Dedicated Mode Using Dial-Up Modem

    Page 114 of 126 ISL Implementation and Maintenance Figure 15 ISL in dedicated mode using leased line Meridian 1 Meridian 1 or SL1 Option 11 ISL D-channel leased lines NTAK02 modem modem DCHI DCHI NTAK19BA QCAD42A • • Analogue/digital TIE trunks ISL in dedicated mode using dial-up modem The requirements are as follows: •...

  • Page 115: Isl Hardware Installation

    ISL Implementation and Maintenance Page 115 of 126 Figure 16 ISL in dedicated mode using dial-up modem Meridian 1 Meridian 1 or SL1 Option 11 NTAK19BA QCAD42A NTAK02 DCHI modem modem DCHI twisted twisted line pair pair line ISL D-channel ISL TIE trunks ISL hardware installation Shared mode...
  • Page 116 Page 116 of 126 ISL Implementation and Maintenance Table 34 NTAK02 switch settings Port 0 Port 1 SW1-1 SW1-2 DPNSS1 — ESDI Port 2 Port 3 SW1-3 SW1-4 DPNSS1 — ESDI Table 35 NTAK02 Jumper settings Jumper Strap for Strap for Jumper Unit location...

  • Page 117: Isl Software Programming

    ISL Implementation and Maintenance Page 117 of 126 Step 2 Set up the D-channel If this is a dedicated mode installation using leased line modems, the D-channel connects the DCHI with the far-end modem over a dedicated leased line. Synchronous modems with a minimum 2400 baud data rate must be configured.

  • Page 118: Dedicated Mode

    Page 118 of 126 ISL Implementation and Maintenance LD 17 – Shared mode. Prompt Response Description D-channel for ISL in “shared” mode, used for both ISDN PRI and ISL. ISLM 1-240 number of ISL B-channel (trunks) controlled by the D-channel (no default value).
  • Page 119 ISL Implementation and Maintenance Page 119 of 126 For ISL dedicated mode using a dial-up modem, a 500 set, TIE trunk route and member must be programmed (used for D-channel). Table summarizes the required steps. Table 36 Configuring Basic ISL Capability Step Overlay Action...
  • Page 120 Page 120 of 126 ISL Implementation and Maintenance Prompt Response Description SIDE NET (USR) Net: network, the controlling switch User: slave to controller Software release of far-end. This is the current software release of the far end. If the far end has an incompatible release of software, it prevents the sending of application messages, i.e.
  • Page 121 ISL Implementation and Maintenance Page 121 of 126 LD 15 – Enable the ISDN option. Prompt Response Description REQ: Add new data Change existing data TYPE: Networking data CUST 0-31 Customer number ISDN Customer is equipped with ISDN 1-32700 Customer private network identifier. MUST be unique to this customer in the private network.
  • Page 122 Page 122 of 126 ISL Implementation and Maintenance LD 16 – Enable the ISL option. Prompt Response Description Add new data Change existing data TYPE Route data block CUST 0-31 Customer number ROUT 0-127 Route number TKTP TIE trunk route DTRK Enter YES if this is a Digital Trunk Interface (DTI or PRI) ISDN...

  • Page 123: Isl Maintenance

    ISL Implementation and Maintenance Page 123 of 126 LD 14 – Assign a channel identifier. Prompt Response Description Add new data Change existing data TYPE TIE trunk type Card and unit to be associated with this trunk RTMB 0-127 1-510 Route number and member number CHID 1-240...

  • Page 124: Maintenance Messages

    Page 124 of 126 ISL Implementation and Maintenance ENL SERV N Enable service messages for DCHI N DIS SERV N Disable service messages for DCHI N Maintenance messages D-channel status and error conditions are reported as DCH messages. These messages can be found in the System Messages (553-3001-411) Maintenance testing ISL back to back testing (without modems) For maintenance reasons or testing purposes it is sometimes necessary to...
  • Page 125 ISL Implementation and Maintenance Page 125 of 126 Port settings: • For port 3, DCHI X, program the following settings in LD 17: — CLOK = INT (Internal clock) — SIDE = SLAV (Slave) Set NTAK02 port 3 jumper plugs to DCE and RS-422. •...
  • Page 126 Page 126 of 126 ISL Implementation and Maintenance 553-3011-315 Standard 13.00 January 2002...
  • Page 128 2.0 Mb DTI/PRI Copyright © 1992–2002 Nortel Networks All Rights Reserved Information is subject to change without notice. Nortel Networks reserves the right to make changes in design or components as progress in engineering and manufacturing may warrant. This equipment has been...

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