Eight-Wire Synchronous Modem Wiring | Digi 90031300 specification

Eight-Wire Synchronous Modem Wiring

Eight-Wire Synchronous Modem wiring allows T1 Modem Bank units to be installed in remote locations and connected to the EPC/X host adapter via RS-232 or RS-422 synchronous modems.

The EPC/X host adapter and the T1 Modem Bank have been designed so that the synchronous ports can support either RS-422 or RS-232 line levels. To connect EPC/X host adapters and T1 Modem Banks to RS-232 synchronous modems, use the special cables shown in Figure 35.

Note that only the negative lead for each RS-422 signal is used in this configuration. The positive lead is left “floating”.

If you are building your own cable, four 2200 pF capacitors (X7R 50V type) are required—two for the EPC/X host adapter and two for the T1 Modem Bank. Install the capacitors between the positive and negative leads of the TxC and RxC signals on the back of the HD-15 connectors, as shown in Figure 35.

Figure 35

RS-232 Synchronous Modem Cables

Appendix E

97

Image 107

Digi 90031300 manual Eight-Wire Synchronous Modem Wiring, RS-232 Synchronous Modem Cables

Contents

AccelePort T1 Modem Bank Page Table of Contents T1 Modem Bank Contents List of Figures List of Tables Federal Communications Commission FCC Statement Regulatory Statements FCC Part Problems with your T1 Modem Bank Industry Canada Compliance Statement T1 Modem Bank Chassis, Front View AccelePort T1 Modem Bank Overview Unpacking T1 Modem Bank Shipping Carton Contents Carrier Approval CSU ModePlanning the T1 WAN Interface CSU Technical Description CSU SpecificationT1 Cable Specification Line Build Out Parameters Specified to the Carrier General Information Requirements for T1 Modem Bank SetupPlanning Worksheets Type Number or Checkmark Description T1 Modem Bank Worksheet T1 Modem Bank Power Supply Installation/Replacement Hardware Installation Power Supply T1 Modem Bank Standalone or Rack Installation Standalone Installation Procedure Bracket Position For 19-inch Rack Requirements for Rack InstallationsMounting Bracket Installation for a 24-inch Rack Bracket Position For 24-inch Rack T1 Modem Bank Unit Spacer General Rack Installation Directions Line Card 735 Synchronous Ports and Terminal Port Daisy Chaining T1 Modem Bank Units Two Daisy Chains of T1 Modem Banks to be Connected Locally Daisy Chain Example Remote T1 Modem Bank Units Connecting a Modem Mixing EPC Concentrators with T1 Modem Bank Units Fault Tolerance PCI Host Adapters EPC/X Host Adapter InstallationConfiguring the Host Adapter Installing the PCI Host Adapter in your Computer ISA Host Adapters Setting the I/O Port AddressDIP Switch Settings for I/O Port Address Factory-Set Jumper J1 Installing the ISA Host Adapter in your Computer Factory-Set Jumpers Installing the Eisa Host Adapter in your ComputerSystem Configuration Eisa Host Adapters Above 1 Megabyte Below 1 Megabyte EPC/X Host Adapter Connected Locally to T1 Modem Banks Connecting the EPC/X Host Adapter to the T1 Modem Banks Local and Remote T1 Modem Bank Units Setting the Node Number Software Installation and Configuration T1 Modem Bank Display Panel Installing Download Post Failure Error Message Codes Restarting Post Possible ProblemDisplay Panel Status Indicators Segment Meaning Description Display Display Panel Status Codes Severely Errored Introduction Software Installation for Novell Systems Installing QuickManager Installing the EPC/X AIO Device DriverInstalling the AIO Application Installing Snmp Main Screen Configuring the T1 Modem BanksLoad dgt1cfg.nlm T1 Modem Bank Configuration Screen Windows NT Software Installation for Windows NT SystemsInstalling the EPC/X Windows NT Device Driver Installing the Windows NT Snmp Service Host System Installation Installing RASInstalling the Management Software Remote System Installation ∙ terminal port mode ∙ display panel mode T1 Modem Bank ConfigurationConfiguring via QuickManager ∙ QuickManager mode Line Card Status Display Line Card Options Display Configuring via the Terminal Port Configuring via the Display Panel T1 Modem Bank Configuring via the Serial Port Interface Initial screen is shown below User selects short-haul for the span-type by entering Configuration modification T1 Modem Bank Equipment List System Information Modem Switchhook Status Alarm Status LOS T1 Modem Bank Diagnostics Modem Test Results Running Diagnostics with QuickManager Running Diagnostics from the Display Panel Running Diagnostics from the Terminal Port Press ? to see the configuration/diagnostic menu Diagnostics Test 2 RAM Test Diagnostic Test DescriptionsTest 3 Timer Test Test 1 Front Panel Test Test 6 Sync Internal Loopback Test Test 4 Line Card TestTest 5 Modem Test Test 9 Watchdog Test Test 7 Sync External Loopback TestTest 8 Eeprom Test Component Level Troubleshooting Component Removal and Installation Line Card Removal and Replacement Component Removal and Installation Modem Card Removal Modem Card Removal and Installation/Replacement Modem Card Modem Revision Description Types of Modem Cards Quick Manager Modem Revision Screen Modem Card Installation/Replacement T1 Modem Bank Power Supply Removal Power Supply Fan Assembly Fan Assembly Removal and Replacement AC Power Inlet Fuse Replacement Connections to the Telephone Network T1 Modem Bank Interaction Alarms on a T1 SpanAlarm Reason for Alarm Result of Alarm Functional Block Diagram of the T1 Modem Bank T1 Modem Bank Power Cord Specifications Physical Specifications T1 Modem Bank Environmental Requirements T1 Modem Bank Rack SpecificationsStandalone Unit Specifications Rack Specifications T1 Loop Back Plug Daisy Chain CablesTerminator Plug Telecom SafetyT1 Modem Bank Certification Emissions Glossary Glossary T1 Modem Bank Appendix a Memory Conflicts Contention for Memory Addresses Typical PC Memory Usage 1st Megabyte EGA/VGA ROM Bios Conflicts Between 8-Bit and 16-bit Memory Devices Eisa Host Adapters Wire Synchronous Modem External Clock Mode# Baud Rate Wire, Internally Clocked Mode# Baud Rate Wire, Self Clocked Mode# Baud Rate Appendix C Terminal Port Cable RJ-45 Plug Signal Pin Terminal Port Connector for Sync Channels Eight-Wire Direct Daisy Chain Cable Wiring Appendix E Generic T1 Modem Bank Wiring ModesEight-Wire Direct Wiring Four-Wire Direct Daisy Chain Cable Wiring Four-Wire Direct Wiring Baud Rate Maximum Cable Length Restrictions on Daisy Chain Cable LengthsDaisy Chain Cable Length vs. Baud Rate RS-232 Synchronous Modem Cables Eight-Wire Synchronous Modem Wiring RS-422 Synchronous Modem Cables Basic AT Commands Appendix F Modem AT Command Set Fn Online Echo Command no operation Dn Dial CommandEn AT Command Echo Options Returned when n = 0 or Modem Identification Returned when n = 0, 1, 2, 3 orLn Speaker Volume dummy command Mn Speaker Control dummy command O3-14 Vn Result Code Format Enable Tone dialingReturned when n = 0, 1 or Sn? Read S Register n Zn Recall Stored Profile Yn Dummy Command Dn Data Terminal Ready Option Load Factory SettingsBn Autoretrain Cn Data Carrier Detect Option Async Only Ln Dial-Up/Leased-Line Option Jn Dummy Command for AutoSyncGn Guard Tone Operation Kn Set Flow Control Pn Dial Pulse Ratio Mn Select Sync, Async or AutoSync Mode OptionsQn Communications Mode Option Rn CTS/RTS Option non-CTS Flow Control Mode Sn Data Set Ready Option Tn Self Test CommandsReturned when n = 0, 3, 4, 5, 7 or Wn Store Active Profile Vn View Active Configuration and Stored ProfileResult Codes Returned when n = 0 or Zn=x Store Telephone Number Yn Select Stored Profile on PowerupXn Sync Transmit Clock Source Cn Data Compression AT% Percent CommandsGn Auto Fallforward/Fallback Enable An Set Autoreliable Fallback Character AT\ Backslash Commands \Kn Set Break Control \Jn Constant DTE Speed Option \Vn Protocol Result Code \Tn Set Inactivity Timer\Nn Modem Protocol Options \Qn DTE Flow Control Options \Xn Set XON/XOFF Passthrough Option JnSet V.42 Detection Phase AT- Dash Commands On Select V.42bis Maximum String Length AT Quote CommandsHn V.42bis Compression Control Nn V.42bis Dictionary Size +FRS=n Class 1 FAX Commands+FTM=? FAX Normal Mode Transmit Capabilities +FTS=n 145 Supported FAX Transmit/Receive Modulations121 122 +FAXERR T.30 Session Error Report Class 2 FAX Commands+FAA=n FAX Auto Answer Enable +FCTCRTY ECM Retry Count Data Bit Order SelectionCopy Quality Checking Capability to Receive FAX Capability Parameters +FDCC Current Session Results +FDCS Current Session Parameters +FDFFC Data Compression Format Conversion Transmit Page Punctuation Begin or continue Phase C Receive DataBegin Phase C Data Transmission Error Correction Mode Control Phase C Transmit Data Block Size +FPHCTO DTE Phase C Response Time-outPhase C Receive Data Block Size Phase C Received EOL Alignment Class 2 FAX Responses Registers Register Definitions S6 Wait Before Dialing S8 Pause Time for Command or Dial ModifierS10 Lost Carrier Delay S11 Dtmf Duration and Interdigit Delay S14 Bit-Mapped Options S12 Guard Time S16 Bit-Mapped Option Status Hdlc protocol S18 Modem Test TimerS19 AutoSync Protocol Support Mode Address detector disabled C1 DCD is on after connect S21 Bit-Mapped OptionsR0 CTS follows RTS 10 &D2 disconnect 111 X4 is selected S22 Bit-Mapped Options10 L2 is selected 01 M1 is selected T4 is selected DisabledS26 RTS to CTS Delay Interval S23 Bit-Mapped Options L0 is selected S30 Inactivity Timer ValueS27 Bit-Mapped Option 000 &Q0, &M0 is selected S40 Bit-Mapped Option Status N1 enabledJ1enabled S37 Desired DCE Speed 255 = 256 bytes = \A3 S50 FAX/Data Mode Selection EnabledS46 Automatic Sleep Timer S47 Forced Sleep Timer with Powerdown Mode in Pcmcia 011 &K3, \Q3 are selected S53 Modem Operating Mode \NnS57 V.42bis Dictionary Size see ATN Default = S51 Data/FAX DTE Flow Control Selection S65 Round Trip Delay S58 Btlz String Length Default =S59 Bit-Mapped MNP Options Default = %C1 is selected S62 DTE Rate Status Default = 142 T1 Modem Bank Display Format Options Result Codes Connect Extended Message Options Ring Carrier 1200/75 Negotiation Progress MessagesCarrier Carrier 75/1200 Compression V.42bis Compression Class Protocol MNP 2 Index 150 T1 Modem Bank