East Coast Datacom Nx8- Dual Composite MUX High-Speed 16-Port TDM Multiplexer Specifications

OPERATIONS MANUAL Nx8- Dual Composite MUX High-Speed 16-Port TDM Multiplexer 31 August, 2006 Manufactured by: East Coast Datacom, Inc.

166119 8/31/2006 6 2.1 Multiplexer Operation The central hardware element of the Nx8-DualMUX is a multiplexer/demultiplexer function th

166119 8/31/2006 7 2.1.1.1 Timeslots and Channel Rates The number of timeslots assigned to a channel determine the bandwidth of the

166119 8/31/2006 8 F20 - (320) bitsDa1Da2Da3Da4Da5Da6M1M2M3F Da1Da2Da3Da4Da5Da6M1M2M3Db1Db2Db3Db4Db5Db6Da51 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 1

166119 8/31/2006 9 minimizes the duration of the interruption and eliminates the need for the operator to manually enter the sequence

166119 8/31/2006 10 RXDRXCTXDTXCTXCERXDRXCTXDTXCTXCELoop-timedDTEInternal-timedDTETx datalatchTransmittedTXCE is used toclock out TXDCross-over &q

166119 8/31/2006 11 For the Nx8-DualMUX, any parameter entry to the composite link rate causes the system to 1) resize the timeslot allocation

166119 8/31/2006 12 2.1.7 Channel Port Operation The 16 channel ports may be configured individually according to their various port options. Al

166119 8/31/2006 13 In the first and default mode, the DCD signal follows the state of the composite synchronization detector. Thus

166119 8/31/2006 14 2.2 System Operation 2.2.1 Configuration Management Functions The configuration management functions are those features to w

166119 8/31/2006 15 bandwidth is added to carry the control signal end-to-end. While bandwidth is added in both directions, only the port selected

166119 8/31/2006 16 2.2.4 System Reset A system reset results from either 1) powering up the system, or 2) a System Reset command.

166119 8/31/2006 17 2.2.6.3 Copying a Mixed Configuration from a Local to Remote System Using this command, the configuration parameters of

166119 8/31/2006 18 2.2.9 Node ID Information A unique node name, of up to 20 alphanumeric ASCII characters, may be entered into the non-

166119 8/31/2006 19 The High/Low attribute determines whether a channel can be bumped or not, to make room for another channel. High priority chan

166119 8/31/2006 20 Assuming no channel backup switching is required, all channels should be configured for a failover mode such that they

166119 8/31/2006 21 To configure this example, the operator would set channels 1, 2, 5, 7, 8, 12, and 15 to seek backup, while channels 4, 11, and

166119 8/31/2006 22 run at 512 Kbps on its assigned home link, and 32 Kbps when backed up on the alternate link. Table 3 1 624121296/24

166119 8/31/2006 23 an ascending count and finds channel 3 is “hs”. Since there were 68 timeslots unused on Link B, the channel is reallocated ont

166119 8/31/2006 24 Table 7 1 -6--16-22-48-87-128-2345678910111213141516hs hf ls lf1 6-12-163216/28166-3-53264/42345678910111213141516hs hf ls lff

166119 8/31/2006 25 Table 9 1 -6-163218-2--2-48871282345678910111213141516hs hf ls lf18/2-32--24-843564/42345678910111213141516hs hf ls lf3164fail

166119 8/31/2006 i 1 Introduction...

166119 8/31/2006 26 Table 11 1 -5-616322-2--2-488-7-12842345678910111213141516hs hf ls lf1-12--32--16-8435-64-2345678910111213141516hs hf ls lf316

166119 8/31/2006 27 channel rates and link speeds, a favorable configuration balancing efficient bandwidth utilization and backup under

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166119 8/31/2006 29 3 Hardware Installation The Nx8-DualMUX system hardware is designed for ease of installation and maintenance. The

166119 8/31/2006 30 The Nx8-DualMUX system is comprised of the following user-accessible modules: Main Chassis Power Supplies ( 1 or 2) Processor

166119 8/31/2006 31 Nx64-MUXSide inflowSide outflowConvection(through unit) Figure 11 Airflow around obstructions 3.2 Power Supply Modules The

166119 8/31/2006 32 3.3.1 Processor Card Replacement The processor card may be replaced with power applied to the system, but it is

166119 8/31/2006 33 AC mains poweris OKPower supply andprocessor boardin placeAC fuses OKAC line fuse isblownALL LEDs onprocessor boardare OFFSys

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166119 8/31/2006 35 4 User Interface 4.1 Indicators 4.1.1 Processor Card The Processor card has fourteen LED indicators on its front

166119 8/31/2006 ii 4.1.3 Redundant Power Supply ... 37 4.

166119 8/31/2006 36 POWERSYS STATUSSYNCPT# 166102MODEL: PROCESSOR, Nx-MUXNx-MUXDISCONNECT AC POWER SOURCEBEFORE REMOVING THIS MODULENOTICE:TXCRXCR

166119 8/31/2006 37 CH +1 ACTIVECH +1 LOOPCH +2 ACTIVECH +3 ACTIVECH +4 ACTIVECH +2 LOOPCH +3 LOOPCH +4 LOOPPT# 166007MODEL: 4-PORT I/O Figure 14

166119 8/31/2006 38 Table 13 – Console Terminal Interface Settings Additionally, the Nx8-DualMUX console interface is designed to echo characters

166119 8/31/2006 39 The operator is automatically logged off the system when there is no terminal keyboard activity for a period o

166119 8/31/2006 40 4.5 Menu Structure In order to illustrate the menu hierarchy in an abstract way, a graphical representation of the menu struc

166119 8/31/2006 41 4.6 Help Menu The Help Menu (option [7] on the Top-level menu screen) provides information on interpreting the status area of

166119 8/31/2006 42 4.7 Top-Level Menu The top-level menu provides eight optional menus from which to set-up and conduct system operations, as sh

166119 8/31/2006 43 ~ Nx8 ID: xxxxx Sys:3.1 FPGA:2.2 Ser:0 00017:21:51~- CpA=L CpB=L Channels: A A A A A A A A B B

166119 8/31/2006 44 Option [4] : Set Composite B Recover Threshold Same as option [2], but applies to Composite link B. Option [5] : Clear „Hits

166119 8/31/2006 45 In this menu the operator begins by choosing the composite port to which subsequent menu operations and commands will be direc

166119 8/31/2006 1 SAFETY WARNING Always observe standard safety precautions during installation, operation and maintenance of this product. To

166119 8/31/2006 46 Option [3]- EIA-530 Option [4]- HI-Z (Off) Selecting this last option turns off the Composite port interface drivers. 4.7.2.4

166119 8/31/2006 47 Option [7] - 60 seconds Option [8] - 5 minutes 4.7.2.9 Composite Link Restore Holdoff Timer [9] This menu allows setting the

166119 8/31/2006 48 The following diagram depicts the menu/options tree for the Channel Configuration Menu: Local ChannelConfiguration1Remote Cha

166119 8/31/2006 49 configuration, such as the type of electrical interface of the port, which may be different on the local side from

166119 8/31/2006 50 4.7.3.3 Channel Port Type [3] This menu allows the selection of the type of port interface standard used at the

166119 8/31/2006 51 4.7.3.7 Channel Failover Mode [7] The Channel Failover Mode determines the priority a channel has under conditions where a co

166119 8/31/2006 52 receive data signal of the DTE in place of that from the multiplexer port. While this loop is in effect, a continuous MARK sig

166119 8/31/2006 53 system, when linked up, is loaded from the file. The configuration is NOT stored to FLASH memory by this command 4.7

166119 8/31/2006 54 4.7.4.9 Reset to Null Configuration Selecting this option causes the current active local configuration to the res

166119 8/31/2006 55 4.7.5 Test & Maintenance Menu [5] This menu presents several options for collecting information on the system

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166119 8/31/2006 56 4.7.5.4.1 Change Password [1] This option allows an operator who is logged in, to change the password on the s

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166119 8/31/2006 59 5 Appendix 5.1 Factory Default Configuration (Null Configuration) Systems are shipped with a factory-default configura

166119 8/31/2006 60 5.2 Connector Pinout Diagrams 5.2.1 Channel Port Connectors (DCE) 25 24 23 22 21 20 19 18 17 16 15 141312 11 109 8 7 65 4 3

166119 8/31/2006 61 5.2.2 Composite Port Connector (DTE) 2524232221201918171615141312111098765432125-pin Sub-Miniature D-type Connector with Pin

166119 8/31/2006 62 5.2.3 Console Port Connector RS-232 Async DCE 25 24 23 22 21 20 19 18 17 16 15 141312 11 109 8 7 65 4 3 21 25-pin Sub-Miniatu

166119 8/31/2006 63 5.3 Adapter Cables 5.3.1 Composite Port V.35 Adapter Cable Connection Diagram Use the following diagram when constructi

166119 8/31/2006 64 5.3.2 Composite Port X.21 Adapter Cable Connection Diagram Use the following diagram when constructing or specifying

166119 8/31/2006 65 5.3.3 Composite Port RS-449 Adapter Cable Connection Diagram Use the following diagram when constructing or specifying

166119 8/31/2006 3 1 Introduction The Nx8-DualMUX is a modular, 16 Port Dual-composite TDM multiplexer for high-speed serial data term

166119 8/31/2006 66 5.3.4 Channel Port V.35 Adapter Cable Connection Diagram Use the following diagram when constructing or specifying a

166119 8/31/2006 67 5.3.5 Channel Port X.21 Adapter Cable Connection Diagram Use the following diagram when constructing or specifying an

166119 8/31/2006 68 5.3.6 Channel Port RS-449 Adapter Cable Connection Diagram Use the following diagram when constructing or specifying

166119 8/31/2006 69 5.3.7 Channel Port-to-Console Adapter Cable Any Nx8-DualMUX channel port, with a management terminal attached, may

166119 8/31/2006 70 5.4 Configuring an Nx8-DualMUX Link for Simplex Operation The Nx8-DualMUX may be used to support Simplex network traffic. Sin

166119 8/31/2006 71 One method to work around the problem of implementing differing local and remote channel parameters, is to remove the transmit

166119 8/31/2006 72 5.5 Technical Specifications Application Multiple Sync or Async DTE devices time-division-multiplexed onto one or

166119 8/31/2006 73 5.6 Ordering Information Part Number: 166100 Model: Nx-MUX_DD Description: 16-Port Dual Composite, Dual Power Chassis QT

166119 8/31/2006 4 Figure 2 Point-to-point Link as Sub-multiplexer 1.2 Planning The network administrator must determine how the Nx8-Dua

166119 8/31/2006 5 2 Key Functions This section presents the functional operation and concepts of the Nx64-DualMUX. Readers should familiarize th