Dual T1/PRI Network Application Card Product Reference Part No. 1.024.1367-01 Version Number 3.
Dual T1/PRI ® Network Application Card Product Reference Version 3.1 http://www.3com.com/ Part No. 1.024.
Com Corporation 5400 Bayfront Plaza Santa Clara, California 95052-8145 Copyright © 1999, 3Com Corporation. All rights reserved. No part of this documentation may be reproduced in any form or by any means or used to make any derivative work (such as translation, transformation, or adaptation) without written permission from 3Com Corporation.
CONTENTS ABOUT THIS REFERENCE Finding Specific Information in This Reference ........................................i Conventions..........................................................................................ii Contacting 3Com..................................................................................ii 1 OVERVIEW Supported Features ........................................................................... 1-1 Accessing the User Interface................................................
Menu Option 10...........................................................................2-6 Configuring the span line’s interface ID....................................2-6 Menu Option 11...........................................................................2-6 Configuring span level call-type blocking .................................2-6 Menu Option 12...........................................................................2-6 Configuring span level cause codes .......................................
Menu Option 4 .......................................................................... 2-15 Assigning timing source priority ............................................ 2-15 Menu Option 5 .......................................................................... 2-15 Configuring chassis slot devices ............................................ 2-15 Menu Option 6 .......................................................................... 2-16 Configuring the modem routing method ...........................
Menu Options 16 and 17..............................................................3-4 Changing span line service state ..............................................3-4 Logging Out of the UI Console...........................................................3-5 4 DUAL T1/PRI STATUS DISPLAYS Dual T1/PRI Status Displays.................................................................4-1 Menu Option 1.............................................................................
Environment...................................................................................... B-2 Shipping and Storage ................................................................... B-2 Operating .................................................................................... B-2 Physical Dimensions...........................................................................
ABOUT THIS REFERENCE About This Reference provides an overview of this reference, tells where to look for specific information and how to contact 3Com, and lists document conventions. This reference describes how to configure the Dual T1/PRI via its user interface (UI) console. This reference is intended for a network engineer or a network technician. It is assumed that the user of this documentation will possess a working knowledge of LAN and WAN technologies.
ii ABOUT THIS REFERENCE Conventions This table lists conventions used throughout this reference. Icon Contacting 3Com Notice Type Description Information note Information that contains important features or instructions. Caution Information to alert you to potential damage to a program, system, or device. Warning Information to alert you to potential personal injury or fatality. May also alert you to potential electrical hazard.
1 OVERVIEW This chapter contains an overview of supported features and instructions for accessing the Dual T1/PRI Network Application Card (NAC) through the user interface (UI) console.
1-2 CHAPTER 1: OVERVIEW Callout # Description 1 RJ-45 connector to NIC’s RS-232 port 2 DB-25 male connector to modem for remote operations 3 DB-25 female-to-female null modem adapter to PC or terminal
2 DUAL T1/PRI CONFIGURATION This chapter provides configuration information for span lines 1 and 2, inbound call routing, software fault event logging, and the card. Configuring Span Lines 1 and 2 Configure span lines 1 and 2 by selecting options 5 and 6 from the user interface (UI) console’s main menu. Copyright | 3Com Corporation, 1998 Dual T1/PRI Application Card Revision 3.1.
2-2 CHAPTER 2: DUAL T1/PRI CONFIGURATION The UI console menu options for configuring both spans are identical. Selecting options 5 or 6 from the main menu produces this screen for that span: Span Line 1 Configuration Current Setting 1 Framing Mode ESF 2 Line Coding B8ZS 3 Remote Loopback Ignore 4 Jitter Attenuation Transmitter 5 Transmit Line Build Out 0.0 fN 6 Switch Type (Boot time) Config=5ESS(AT&T)Act.
Configuring Span Lines 1 and 2 2-3 This diagram represents this process. Encoded HDB3 Signal Bit Stream Framer Circuitry Line Interface Unit Transformer Configure the NAC framer to respond or ignore the loop-up/loop-down pattern from the Telco. Menu Option 4 Configuring the span line’s jitter attenuation Jitter attenuation on the span line enhances the network interface card (NIC) tolerance to jitter.
2-4 CHAPTER 2: DUAL T1/PRI CONFIGURATION There are four attenuation values to choose from: Menu Option 6 ■ 0.0 dB (default) ■ 7.5 dB ■ 15.0 dB ■ 22.5 dB Configuring for the Telco’s switch type In order to receive or place calls to the Telco on the span line, configure the NAC to work with the type of switch the Telco is using.
Configuring Span Lines 1 and 2 Menu Option 8 2-5 Mapping the span line’s DS0s to chassis modems The Total Control chassis contains 17 NAC slots.
2-6 CHAPTER 2: DUAL T1/PRI CONFIGURATION Menu Option 9 Configuring the span line’s signaling channel If using non-facility associated signaling (NFAS), configure a B- or D-channel for signaling purposes. Menu Option 10 Configuring the span line’s interface ID If using NFAS, configure the interface ID specified by the Telco with this option. The default is 0 for non-NFAS.
Configuring Span Lines 1 and 2 2-7 The following types of cause codes are supported: Cause Code Type Default Cause Code Value Description A 58 All calls blocked B 58 Analog calls blocked C 58 Digital calls blocked D 58 No modems available E 58 No gateway available Use the following syntax when configuring this option: CCT:CCV Where: CCT = Cause code type CCV = Cause code value (0–127) Pressing R at the prompt resets all codes to the default value of 58.
2-8 CHAPTER 2: DUAL T1/PRI CONFIGURATION Where: BCT = blocked call type (A for analog calls, N for none, D for digital, B for both analog and digital.) DS0# = DS0 number, 1–23 (24 is reserved as the D-channel) The blocked call-type column has two subheadings: configured and current. As changes are made to this screen, the configured and current column are updated to reflect the new configuration.
Configuring Span Lines 1 and 2 2-9 Configure the Short Haul NIC to handle the following cable lengths: ■ 0 – 133 ft. ■ 134 – 266 ft. ■ 267 – 399 ft. ■ 400 – 533 ft. ■ 534 – 655 ft. If there is no Short Haul NIC installed behind the T1/PRI NAC, the main menu’s current setting for this option is not applicable.
2-10 CHAPTER 2: DUAL T1/PRI CONFIGURATION Configuring Inbound Call Routing Configure inbound call routing by selecting option 4 from the UI console’s main menu. Copyright | 3Com Corporation, 1998 Dual T1/PRI Application Card Revision 3.1.
Configuring Inbound Call Routing Menu Option 3 2-11 Configuring inbound call routing Configure inbound phone numbers assigned to a span line for a specific call type, analog or digital, for routing purposes. In order to route analog calls, the card must be configured to accept analog in menu option 2.
2-12 CHAPTER 2: DUAL T1/PRI CONFIGURATION The # column represents the phone number index, the phone number column displays the inbound phone number assigned to the specific index, and the CT column displays what call type the specific index is configured for, analog or digital. Menu Option 6 Mapping inbound phone numbers to reserved pools The Dual T1/PRI provides 12 pool IDs. These pools allow for greater flexibility in terms of the number of services that can be offered to callers.
Configuring Inbound Call Routing 2-13 Use the following syntax to assign a pool type to a pool ID: ID:PT Where: ID = pool ID PT = pool type (analog, digital, both, none, or clear (clears pool type and inbound phone #)) CAUTION: Changing pool types will trigger an automatic update to device-to-pool mappings that may result in data loss. Menu Option 7 Mapping chassis modem channels to reserved pools Once the pool IDs are configured, they must be mapped to modem channels. This option allows you to do this.
2-14 CHAPTER 2: DUAL T1/PRI CONFIGURATION Menu Option 9 Allowing ISDN-GWC termination This is the maximum number of digital (such as Terminal Adapter v.110, v.120) calls terminated directly by the ISDN gateway. All other digital calls are terminated by the Quad (I-modem). Maximum performance is generally obtained by disturbing the digital calls to the Quad (I-modem). Thus, this parameter should be selected to be zero for T1/PRI.
Configuring the Card Menu Option 2 2-15 Restoring configuration from NVRAM This option allows you to return the NAC to configuration settings stored in NVRAM. Menu Option 3 Restoring the default configuration After saving configuration changes to NVRAM, you may decide at a later date that changes need to be made. An easy way to implement this new configuration is to return the NAC to the default configuration and start fresh.
2-16 CHAPTER 2: DUAL T1/PRI CONFIGURATION The configurations made with this option are subject to verification by chassis awareness. For example, if a modem is configured that is not present in the chassis, the configuration request is automatically rejected with no error message displayed. Menu Option 6 Configuring the modem routing method Route incoming calls from the span to modem channels in one of three ways: ■ Next Available (Round Robin) Routes calls to the very next modem channel available.
Configuring Software Fault Event Logging Menu Option 9 2-17 Companding Code Configuration Companding is the process of compressing a signal’s amplitude for transmission and then expanding it back to its original form at the receiving end. It is used to reduce the signal-to-noise ratio on the line. This option allows you to configure the NAC for one of these companding modes: ■ A-law Companding standard used outside of North America. ■ u-law Companding standard used in Japan and North America.
3 DUAL T1/PRI MAINTENANCE This chapter contains information about performing Dual T1/PRI commands and logging out of the user interface (UI) console. Dual T1/PRI Commands Issue commands to the Dual T1/PRI by selecting option 1 from the UI console’s main menu. 3Com (c) 1995, 1996, 1997, 1998 Dual T1/PRI Application Card Revision 3.1.
3-2 CHAPTER 3: DUAL T1/PRI MAINTENANCE Selecting option 1 from the main menu produces this screen: Command 1 Reset to Highest Priority Timing Source 2 Reset PRI NAC 3 Enter/Exit span-to-span pass-thru loopback mode 4 Force Receiver Reframe on Span Line 1 5 Disconnect Call on Span Line 1 B-CHANNEL(s) 6 Force Receiver Reframe on Span Line 2 7 Disconnect Call on Span Line 2 B-CHANNEL(s) 8 Force TDM-Bus Mastership on Card 9 Enter/Exit LoopBack Command on Span Line 1 10 Enter/Exit LoopBack Command on Span Line
Dual T1/PRI Commands Menu Options 4 and 6 3-3 Forcing receiver reframe on the span lines Issuing command options 4 or 6 forces the T1 framer to reframe or re-synchronize incoming data on span line 1 or 2. Use these options if error conditions occur. Observe error conditions through span line 1 and 2 Alarm/Event status screens.
3-4 CHAPTER 3: DUAL T1/PRI MAINTENANCE Menu Option 11 Disabling red ALARM LEDs The span line ALARM LEDs on the NAC’s front panel remain lit for the duration of an alarm condition. In cases where the alarm condition is recognized and it is determined that the cause for this alarm is accounted for, disable the LED with this option. An example of such a condition would be when only one span is being used.
Logging Out of the UI Console Logging Out of the UI Console 3-5 Exit the Dual T1/PRI UI console by selecting option 8, the logout command, from the console’s main menu. 3Com (c) 1995, 1996, 1997, 1998 Dual T1/PRI Application Card Revision 3.1.
4 DUAL T1/PRI STATUS DISPLAYS This chapter contains information about Dual T1/PRI status displays. Dual T1/PRI Status Displays Access the Dual T1/PRI NAC status display options by selecting option 2 from the user interface (UI) console’s main menu. 3Com (c) 1995, 1996, 1997, 1998 Dual T1/PRI Application Card Revision 3.1.
4-2 CHAPTER 4: DUAL T1/PRI STATUS DISPLAYS Menu Option 1 Checking power-up self test status Upon power-up, the T1/PRI software performs various tests to ensure proper operation of the Network Application Card (NAC) hardware. Selecting option 1 from the status menu displays the results for these tests: ■ RAM This test fills the SRAM of the NAC with a pattern sequence, and then performs a comparison check. The failure level for this test is Critical.
Dual T1/PRI Status Displays ■ 4-3 Line Interface Unit 1/2 The power-up code verifies whether or not the NIC is present and then configures the CSU on the NIC to local loopback mode. The failure level for this test is Non-critical. ■ Flash ROM 12v Test This self-test checks and verifies that the 12v circuitry to the Flash ROM functions properly. The failure level for this test is Non-critical. ■ HDLC Channel 1/2 The code checks the HDLC controller channels 1 and 2.
4-4 CHAPTER 4: DUAL T1/PRI STATUS DISPLAYS ■ Dual PRI A Dual T1/PRI NAC is installed and assigned to that particular slot. ■ ISDN-GW A NETServer PRI NAC is installed and assigned to that particular slot. ■ QBCH-MDM A Quad Modem NAC is installed and assigned to that particular slot. ■ QBCH-I_MDM A Quad I-Modem NAC is installed and assigned to that particular slot.
Dual T1/PRI Status Displays 4-5 The ID (slot #) column represents the chassis slot numbers, 1–16 The status column displays one of these: ■ AVAIL The NETServer PRI is installed in the corresponding chassis slot and is idle. ■ Un-Avail There is no NETServer PRI installed in the corresponding slot, or it is not responding. ■ In-Use The NETServer PRI is installed in the corresponding chassis slot and is active. The number of calls column indicates how many calls the NETServer PRI is handling.
4-6 CHAPTER 4: DUAL T1/PRI STATUS DISPLAYS ■ IDLE The time slot is available and awaiting a call. ■ OOS The time slot is blocked either at the Telco or locally. The device type column displays the type of device handling the call. It displays one of these: ■ QBCH-MDM Quad Modem card. ■ QBCH-I_MDM Quad I-Modem card. ■ ISDN-GW NetServer PRI NAC. The slot/chan column shows what modem slot/channel the individual time slots are mapped to.
Dual T1/PRI Status Displays ■ 4-7 Unavailable Secs The DS1 is determined to be unavailable. All other counters will stop. Any layer 1 condition or 10 consecutive SES events will lead to DS1 unavailability. Ten consecutive non-SESs (no alarm condition) will clear the unavailability. ■ Bipolar Violations This indicates bipolar violations (BPV) in the line format being used. A BPV occurs when two consecutive non-zero elements of the same polarity occur in an alternate mark inversion (AMI) signal.
4-8 CHAPTER 4: DUAL T1/PRI STATUS DISPLAYS ■ Excessive CRC Error Indication (ECRCEI) This is reported in ESF format when 32 of any 33 consecutive CRCs are in error. The status report indicates whether or not this event occurred. A counter records the number of times an event occurred since the latest counter reset. ■ Out of Frame (OOF) This is a local alarm that indicates a framing pattern for a span is lost and data cannot be extracted properly. This is also referred to as a red alarm.
Dual T1/PRI Status Displays ■ 4-9 Failed Seconds This indicates the number of seconds in failed state operation. A failed state is defined as 10 consecutive seconds during which severely errored seconds occur. ■ D-Channel Operational This indicates the state of the ISDN D-channel. Up indicates that the D-channel is active, and Down indicates that the D-channel is not active. The events in the lower left-hand side of the screen are real time alarms.
A TROUBLE CLEARING This appendix contains Dual T1/PRI Network Application Card (NAC) trouble clearing information. Using the LEDs The Dual T1/PRI NAC has six LEDs on the front panel, three per span, that indicate line signal conditions.
A-2 APPENDIX A: TROUBLE CLEARING CD (1 or 2) LED Color ALRM (1 or 2) LED Color LPBK (1 or 2) LED Color T1 Condition Green Off Off No Alarm Green Red Off Remote Frame Alarm (RFA) Off Red Off Loss of Signal Alarm (LOS) Red Red Off Out of Frame Alarm (OOF) Red Red Off Unframed All Ones Alarm (AIS) Green Off Green Loopback in Progress Layer 2 (D-channel Status)* Any Any Off Signaling Channel Up Any Any Amber Signaling Channel Down *If Layer 1 alarms exist, Layer 2 status is
Using the LEDs Correcting Alarm/Error Conditions Alarm/Error Level Trouble Clearing Remote Frame Alarm (RFA) Yellow ■ ■ Loss of Signal (LOS) N/A ■ Examine boot-up test results. ■ Examine error counters. ■ Red Verify that the span is plugged into the NIC properly. If the cabling is correct, there is most likely a problem at the Telco. Contact the Telco for service. Check the cables—do not use a flat cable. ■ Check break-out boxes. ■ Examine boot-up test results.
A-4 APPENDIX A: TROUBLE CLEARING Alarm/Error Level Trouble Clearing Signaling Channel Down N/A ■ ■ Using SNMP Traps Contact the Telco to see what their side is receiving. If they’re showing that the Signaling Channel is up, there is most likely a problem in the receiving pair at your site. If the module is indicating alternating Signaling Channel Up (Loopback LED off) and signaling Channel Down signals, there is most likely a cabling mismatch between the TX and Rx signals.
TECHNICAL SPECIFICATIONS B Certification EMI/RFI Safety Regulatory Compliance Statements ■ FCC 15A ■ EN55022 A ■ UL 1950 ■ C-UL ■ EN 60950 ■ JATE United States FCC Part 15 Compliance Statement 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. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment.
B-2 APPENDIX B: TECHNICAL SPECIFICATIONS Environment Shipping and Storage Temperature: -25 to 75° C, -13 to 167° F Relative Humidity: 0 to 100%, Non-condensing Temperature: 0 to 40° C, 32 to 104° F Relative Humidity: 0 to 95%, Non-condensing Operating Physical Dimensions Inches Centimeters Length: 5.30 13.46 Width: 0.79 2.00 Height: 6.90 17.
INDEX About Dual Channelized T1 (386) Alarm Levels A-4 About T1/PRI Alarm Levels A-4 Accessing the User Interface 1-1 Allowing for ALERTING message in response to SETUP request 2-9 Allowing ISDN-GWC termination 2-14 Allowing modem analog calls 2-10 Assigning timing source priority 2-15 Configuring the span line’s signaling channel 2-6 Configuring the span line’s transmit line build out 2-3 Configuring the UI console password 2-16 Connect/disconnect B-channel on span lines 1 and 2 3-4 Contacting 3Com ii Co
INDEX-2 Mapping digital reserved pools to chassis Gateways 2-13 Mapping inbound phone numbers to reserved pools 2-12 Mapping the span line’s DS0s to chassis modems 2-5 P Physical Dimensions B-2 R Regulatory Compliance Statements B-1 Resetting the highest priority timing source 3-2 Resetting the PRI NAC 3-2 Responding to a span line remote (framer) loopback 2-2 Restoring configuration from NVRAM 2-15 Restoring the default configuration 2-15 S Saving configuration changes to NVRAM 2-14 Selecting a Gateway
3Com Corporation 5400 Bayfront Plaza P.O. Box 58145 Santa Clara, CA 95052-8145 ©1999 3Com Corporation All rights reserved Printed in the U.S.A. Part No. 1.024.
