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COMSPHERE 3600 Series Data Service Units

E-8

December 1996

3610-A2-GB46-60

Table E-5

(4 of 4)

Device Health and Status Messages

Message

Action

Condition

Prt

nnn Disable

Transmitter at port 

nnn (01— 06, All) is

disabled.

Use the Control branch’s control option TxCtl to
enable the port.

Prt

nnn Stream Term

Streaming terminal. DTE at port 

nnn (01— 06,

All) has its RTS lead turned ON longer than the
predefined time.

Refer to configuration option AntiStream. Verify
DTE operation.

Redun Fan Alarm

Indicates a problem with the fan on the –48 Vdc
Central Office Power Unit.

Check NMS adapter cable connection to 
– 48 Vdc power supply cable connections. If
okay, call your sales or service representative.

Redun Pwr Alarm

Indicates a problem with the power on the 
– 48 Vdc Central Office Power Unit.

Check NMS adapter cable connection to 
– 48 Vdc power supply cable connections. If
okay, call your sales or service representative.

Subnetwrk Alarm

A major alarm was set Off by one of the devices
in your subnetwork.

Check the Subnetwork Health and Status report
and Table E-6.

Sub-normal Speed

The DBM is operating at a dial backup speed
less than the DSU and the DDS network speed.

Set the configuration option DBM Rate(Kbps) to
the DDS network data rate.

Subtree Truncat

Downstream health and status information has
been truncated because of an overflow of the
system limits.

Clear any alarms to decrease the amount of
information reported.

Summary of Contents for COMSPHERE 3610

Page 1: ...ES DATA SERVICE UNITS MODELS 3610 AND 3611 USER S GUIDE Document No 3610 A2 GB46 60 December 1996 NOTE This document supports Firmware version 8 0 or greater Refer to Appendix G for Firmware Version C...

Page 2: ...rrent information via fax or to speak with a company representative Within the U S A call 1 800 870 2221 International call 727 530 2340 Trademarks All products and services mentioned herein are the t...

Page 3: ...ied service personnel 6 General purpose cables are provided with this product Special cables which may be required by the regulatory inspection authority for the installation site are the responsibili...

Page 4: ...useful to determine the quantity of devices you may connect to your telephone line and still have all of those devices ring when your number is called In most areas the sum of the RENs of all devices...

Page 5: ...nd jack must be ordered from the telephone company Refer to the following table for this information DBM Jack Installation Requirements DBM Type USOC Jack Standalone USOC Jack Carrier Mounted Canadian...

Page 6: ...er utility telephone lines and internal metallic water pipe system if present are connected together for protection This precaution may be particularly important in rural areas CAUTION Users should no...

Page 7: ...ted Documents 1 5 2 Model 3610 Installation Overview 2 1 Before You Begin 2 1 Installation Process 2 2 DSU Installation Planning 2 2 Verifying the S1 Switch Settings 2 2 Powering Up the DSU 2 4 Power...

Page 8: ...est Branch 3 9 Abort 3 9 Device Test 3 10 Loopbacks 3 10 Digital Test 3 12 End to End Test 3 12 Bit Error Rate Test 3 13 Lamp Test 3 13 Dial Tone Test 3 13 Configuration Branch 3 14 Options 3 14 Poll...

Page 9: ...dices A Data Service Unit Menu A 1 B DSU Configuration Worksheet B 1 C Async Terminal Operation C 1 D SNA Diagnostics D 1 E Troubleshooting and Front Panel Messages E 1 F Technical Specifications F 1...

Page 10: ...menu structure with a brief description of each branch s purpose or function Chapter 4 provides the basics of setting or changing configuration options Configuration option tables assist you in making...

Page 11: ...n to user transmitted data Async Sync conversion Provides point to point and multipoint asynchronous to synchronous data conversion for DTE ports The DSU can send asynchronous data over a synchronous...

Page 12: ...6700 or 6800 Series NMS workstation The front panel The async terminal of a control DSU A DATAPHONE II System Controller or Network Controller Point to Point and Multipoint Supports both link configu...

Page 13: ...DS line Bridging Digital bridging provides dial backup of multipoint configurations When ordered from the factory as a DBM X for Model 3611 does not function as a DSU A DBM X is a Model 3611 DBM D DBM...

Page 14: ...nbound and outbound directions TDM Capability Additional TDM capability includes the following features Port capacity Allows up to six independent ports to share one standard digital point to point fa...

Page 15: ...hen used to support dedicated multipoint dial backup includes the following features Number of tributaries Provides dedicated multipoint dial backup for up to 20 tributary DSUs Partial and full backup...

Page 16: ...MP Flex Upgrade Installation Instructions 3610 A2 GZ51 Shipped with field installable TDM Flex or MCMP Flex upgrades Contains Model 3610 Flex MUX installation procedures COMSPHERE 3600 DBM Option Inst...

Page 17: ...nnect to the network No on site assembly is required Before You Begin Before connecting any cables to your DSU verify the following There is a dedicated grounded ac outlet within 6 feet that is protec...

Page 18: ...ing normal operation When performing installation procedures however take proper static control precautions to prevent damage to equipment If you are not sure of the proper static control precautions...

Page 19: ...ure B 496 14719 02 Switch 1 V 35 Test Mode S1 4 EIA 232 Test Mode S1 3 V 32 Analog DBM Interface S1 1 Frame Ground Signal Ground S1 2 S1 1 ON 2 3 4 1 2 3 4 Switch Setting Function S1 1 ON default Perm...

Page 20: ...the DSU to any network ensure that approved primary protectors have been installed on the circuit in accordance with Article 800 of the National Electric Code NFPA 70 in the United States and Section...

Page 21: ...odel 3610 and Model 3611 DSUs change configurations options from A front panel or A 6700 or 6800 Series NMS or An async terminal Model 3610 standalone only Appendix B provides a Basic Configuration Wo...

Page 22: ...Procedure 1 From the Home screen as shown above select Local F1 The following screen appears on the LCD F1 Local Mode Stat Bckup Test F2 F3 Confg Ctrl 2 To access the Configuration Confg branch press...

Page 23: ...tary s Active set and appear based on local hardware They are filtered when the front panel is locked The selected option set can then be displayed edited and saved back to the same tributary another...

Page 24: ...s Alrm indicator is no longer lit Health and Status screen no longer displays a No Signal message The DDS data rate displays Auto while detecting a rate Change the Rate Kbps to a set rate when the dat...

Page 25: ...3610 DTE connection Procedure 1 Connect the plug end of the DTE cable to the proper port on the back panel of the DSU EIA232 or V 35 Tighten the two holding screws if present to secure the connector P...

Page 26: ...nostic Interface Verification Procedure 1 Enable the LPDA option refer to Table 4 5 2 Send a DSU CSU and Line Status test from the IBM NetView console to the control DSU and each tributary 3 As the st...

Page 27: ...Status 3 7 Circuit Quality 3 7 Identity 3 7 Terminal Power 3 7 Backup Branch 3 9 Test Branch 3 9 Abort 3 9 Device Test 3 10 Loopbacks 3 10 Local Loopback 3 10 DTE Loopback 3 10 Digital Loopback 3 10...

Page 28: ...tation to control and configure the DSU from the NMS Front Panels The front panel is the user interface to the DSU There are two types of front panels The front panel on the Model 3610 Figure 3 1 The...

Page 29: ...Menu Right Scroll Key Function Keys Left Scroll Key Moves Up One Level from Current Display LCD Second Line Keypad There are seven keys on the Model 3610 front panel The key terminates any work in pro...

Page 30: ...core is being tested the active DSU or DBM device is either performing a test or other DSUs or DBMs are in Test mode The DSU or DBM is automatically put into Test mode when a remote DSU or DBM is perf...

Page 31: ...fault settings Table A 1 lists all DSU factory default settings Top Level Menu Access to all network management tasks begins at the top level menu the head of the menu hierarchy 495 12970a TOP LEVEL M...

Page 32: ...H S is selected For a Local DSU alarm and status conditions are updated every 2 seconds Remote DSU display reflects the actual alarm and status conditions at the time of access Device Health and Statu...

Page 33: ...g the DDS Receive Signal Loss DDS RxLoss based on peak detection of the received signal The DDS RxLoss display is available when App Module ID displays XLOOP except when MUX Function is set to EBrdg T...

Page 34: ...option DBMtyp xxx yy y z Type of DBM installed xxx can be I ISDN or DBM I V V 32 or DBM V 2wS 2 wire Switched 56 kbps DBM or DBM D or 4wS 4 wire Switched 56 kbps DBM or DBM S yy y indicates the DBM s...

Page 35: ...ing a test can affect your application data or may cause your application session to be dropped depending upon the protocol front end processor and time out parameters No data or acknowledgment messag...

Page 36: ...ol DSU Loopbacks do not appear with a multipoint DSU in Remote mode Refer to the figures as you read about loopbacks Local Loopback Local Loopback LL is session disruptive performing the test disrupts...

Page 37: ...ital Loopback cannot be initiated from a multipoint tributary When a DSU control or tributary originates Remote Digital Loopback both the originating DSU and the targeted DSU enter Test mode No other...

Page 38: ...time period Run on port nn Port number appears if this test was not run on an aggregate data path When the test is complete The top line display changes from Active to Final The second line changes f...

Page 39: ...the test results and resets the timer to zero Table 3 5 Bit Error Rate Test BERT Results Results Information Displayed Time Running test timer Tot Error Running count of bits in error MAX appears whe...

Page 40: ...ions Table A 1 in Appendix A for all DSU factory default configuration option settings Table E 4 in Appendix E for Configuration Error Messages User Storage Areas Usr1 Usr2 and Usr3 are storage areas...

Page 41: ...for more DBM information Network Address Network address Addr is the network address of the local DSU and is available from the Local branch The DSU s network address is numeric A DBM automatically ac...

Page 42: ...the test but the unit remains disabled A DSU in test clears the test when it receives an enable or disable command If an enable command is sent to a control from an NMS the local front panel or an as...

Page 43: ...plays Device Reset Once completed the user needs to login into the async terminal again NOTE Reset is disruptive and can affect your application data or may cause your application session to be droppe...

Page 44: ...rnal Leads only The 3600 Series DSUs are shipped from the factory with the security level set to Unlock When the front panel is locked only the Local branch appears on the control DSU NOTE To lock or...

Page 45: ...tion options supporting DBMs are in Document No 3610 A2 GB49 Configuration Option Tables This section contains a configuration option table for each functional group or option set within the Configura...

Page 46: ...ts the speed of the DTE port interface The port speed may be set to any value less than or equal to the Rate Kbps configuration option value If the value is set less than the DDS rate the DSU performs...

Page 47: ...power up overflow or after the request to send lead makes an Off to ON transition Use TxElasStor to minimize the effects of clocking differences from different sources Disab Disable this configuratio...

Page 48: ...erface Not valid with digital bridging AggSw Enable for aggregate switch backup When Answer External Dial Backup is disabled Table 4 4 the DSR signal is sent to the external dial backup unit Data can...

Page 49: ...onD nondisruptive diagnostics and no excess bandwidth is available for in band diagnostics This configuration option only appears when Diag Type is set to NonD For example DSU port speed and DDS line...

Page 50: ...tary is a 2600 or 3500 Series DSU This selection is not available for digital DBMs 3600s2 Used in circuits containing only 3600 Series DSUs This configuration option performs full 3600 diagnostics bet...

Page 51: ...w often the health and status message is transmitted an extended RTS CTS delay occurs each time the DTE raises or lowers RTS Applicable to tributary DSUs and DBMs only 1 Tributary DSU responds with he...

Page 52: ...1s 2s 5s Prev Packet Delay Controls the time in seconds that a DSU or DBM waits for a packet to complete from an NMS This configuration option only appears for a DSU configured as a control NOTE Must...

Page 53: ...ice NOTE Enable this configuration option for the control DSU and the tributaries the control DSU and tributaries must be set the same Enab Enable this configuration option when performing multipoint...

Page 54: ...to abnormal conditions such as no signal or test mode as determined by the following configuration option settings in this table RTS Cntrl CTS Lead and Circ Assur RTS Request to Send CTS follows RTS...

Page 55: ...tion refer to the Backup Configuration Option Table in Document No 3610 A2 GB49 FrcOn Forced On Keeps CTS on as long as the DSU has power DSR FrcOn Enab Next Enab Disab Prev Data Set Ready Forced On P...

Page 56: ...er the DSU responds to a 2500 or V 54 Remote Loopback request Refer to the Loopbacks section in Chapter 3 Enab Performs a Digital Loopback Disab Ignores the Loopback command LL by DTE Disab Next Enab...

Page 57: ...plays DTR Alarm and reports it to the NMS Does not appear for TDM or MCMP mode Enab If DTR lead turns Off for 30 seconds the DSU generates an alarm Disab No alarm is generated when DTR lead is Off SW...

Page 58: ...ntrol the External DBU places the call Data switches back to the DDS line when the front panel Drop Backup DrBU or NMS Standby Facility command is issued This turns the DSR signal Off on the alternate...

Page 59: ...ntrol branch Enab Any installed DSU DBM and MUX performs all device tests during the initial power up routine or when selecting Reset from the Control branch Disab The power up routine and Reset will...

Page 60: ...nfigurations the extended circuit link can also be configured to respond to the NetView dial backup command by turning on SNA Backup at the extended control DSU This feature is not supported in multip...

Page 61: ...in effect and additional installed hardware features Top Level Menu The DSU operation is presented as menu selections that branch downward from the top level of the menu tree Factory Default Settings...

Page 62: ...nced Diagnostic protocol Dir Directory FacC Factory Control PList Poll List AggSw Aggregate Switch Disab Disable FacT Factory Tributary PrtSp Port Speed Bckup Backup Disc Disconnect FB1 Fallback 1 Psw...

Page 63: ...Prt1 Prt2 Prt3 Prt4 Prt5 Prt6 Remt Usr1 Usr2 Usr3 Address Activ Usr1 Usr2 Usr3 TDM MCMP DSU DBM TxCtl LEDs ExtL DSU DBM Ports Displ Chang Enab Disab Skip Clr Diag Prt1 Prt2 Prt3 Prt4 Prt5 Prt6 Copy F...

Page 64: ...ptive NonDisruptive 2ndChannel bps 400 400 400 400 400 Disruptive Type 3600e 3600e 3600e 3600e 3600e Diag Gen FacC FacT FacB MPTC MPTT Position Control Trib Control Control Trib LinkConfiguration Poin...

Page 65: ...Enable Circuit Assurance Disable Disable Disable Disable Disable Test Pattern Std Std Std Std Std RespondRDL Disable Enable Disable Disable Enable LL by DTE Disable Disable Disable Disable Disable RL...

Page 66: ...DSU configuration options Included are option sets for the DSU and LPDA 2 options The worksheet presents the options sets with configuration options and values You can use the worksheet for Reference...

Page 67: ...20s 50s Packet Delay A 0s 1s 2s 5s Extend Chan A Yes No Upstrm Port A Prt1 Prt2 Prt3 Prt4 Prt5 Prt6 M PtSymPrt A Enab Disab Fast Sel A Enab Disab General Configuration Options Value DTE Port EIA232 V...

Page 68: ...th 9 6 kbps data rate 8 bits 1 stop bit and no parity Emulates the front panel The modem needs to be set for the same speed of 9 6 kbps before enabling the async terminal If you are accessing the DSU...

Page 69: ...anch Use the or key to display the Term selection Select Term 2 Select Pswrd the Term Pswrd screen appears F1 Term Pswrd ________ Chang Save F2 F3 To access the terminal without a password press F2 fo...

Page 70: ...he DSU s top level menu appears on the async terminal At the same time the LCD s message changes to F1 User I F Activ FP Locked F2 F3 If no key is pressed at the async terminal for 5 minutes the front...

Page 71: ...a selection or display screen pressing the Enter key at any time during a session refreshes the async terminal s screen NOTE When no entries are made for 5 minutes the async terminal session times out...

Page 72: ...as shown below The unit s current configuration is displayed This example identifies a Control DSU with Port 1 operating at the port speed of 9 6 kbps To select from the menu enter the number or lett...

Page 73: ...2 The Control Function Menu selection screen appears PRESS 3 ExtL 3 The External Leads Menu selection screen appears PRESS 2 Chang Customer ID ORLANDO2 Model COMSPHERE 3610 External Leads 1 Displ T C...

Page 74: ...the Customer ID Menu screen to set up or change the Customer ID PRESS 1 Chang The Customer ID input screen appears The Customer ID can be up to 8 characters Valid Customer ID Entries Input ID Entry A...

Page 75: ...Top Menu Ctrl U Up Menu Ctrl V View H S ENTER Input Form of hhh mm ss 000 08 00 Ctrl x Disconnect 5 Enter the run time for the Digital Test and press the carriage return CR The following message appea...

Page 76: ...ot diagnostically compatible with IBM 5822 DSUs A mixture of 3600 Series and IBM 5822 DSUs will not support LPDA 2 diagnostics The SNA Diagnostic Interface option must be enabled in each control and t...

Page 77: ...n extended control DSU is the second level control and assigned the address 2 Valid Addresses Valid addresses for control DSUs range from 1 to 255 The following rules apply to assigning the LPDA 2 add...

Page 78: ...ails again call your sales or service representative Messages This section describes the informational messages that may appear on the DSU s front panel when Using the Async Terminal feature Executing...

Page 79: ...DSU reverts to User I F Idle Table E 3 Command Error Messages Message Condition Action Command Failed Command could not execute and none of the error messages below apply If problem cannot be correct...

Page 80: ...S data rate Set configuration option PrtSp Kbps to be equal to or less than the DDS Rate Kbps DSU AsyncUndersp A port configured for asynchronous operation cannot be the underspeed port Bit robbing fo...

Page 81: ...nfiguration option PrtSp Kbps to 4 8 kbps or higher or change Diag Type or enable M PtSymPrt or change MUX Funct to not equal MCMP Change configuration option Disr Type to Br56 or set PrtSp Kbps to th...

Page 82: ...mote not detected 7 Rate Confl Rate conflict Rate Kbps is set to Auto and the total of the port speeds exceeds the aggregate rate 1 Verify that the DSU Rate Kbps setting matches the network speed Try...

Page 83: ...ed pairs needing repair nn n EBrdg Indicates the Bridge Rate nn n of the active core DSU or DBM when there are no alarms The bridge rate is set with the MUX Setup configuration option External Alarm A...

Page 84: ...rameThresh For DSUs operating on a single port rate adaption or nondisruptive TDM or MCMP the local DSU has detected a continuous MUX Out of Frame condition If the alarm continues on a point to point...

Page 85: ...er supply cable connections If okay call your sales or service representative Redun Pwr Alarm Indicates a problem with the power on the 48 Vdc Central Office Power Unit Check NMS adapter cable connect...

Page 86: ...working remote status address is available MAJOR Indicates a major alarm from a DATAPHONE II device Verify DPII connection MUX MUX TDM or MCMP failure See MCMP or MUX CommunicFail message in Table E...

Page 87: ...ble F 5 Async Terminal for use with a Model 3610 DSU only Table F 6 Table F 1 LADS Connection Distances for Models 3610 A3 xxx and 3611 A3 xxx or Lower Wire Diameter AWG Data Rate kbps 19 Gauge 0359I...

Page 88: ...79 mi 7 71 km 3 53mi 5 68 km 56 10 84 mi 17 45 km 6 4 mi 10 3 km 4 50 mi 7 24 km 3 34 mi 5 37 km 64 10 69 mi 17 2 km 6 06 mi 9 76 km 4 47 mi 7 2 km 3 20 mi 5 15 km Table F 3 1 of 3 General COMSPHERE...

Page 89: ...O 2110 ITU V 35 ISO 2593 A modular DSU V 35 interconnect cable is required to use the V 35 connector The cable provides an interface between the DSU s 25 pin D type connector and the DTE cable s V 35...

Page 90: ...ENSIONS 3610 DSU Height Width Depth 3611 DSU modular or non modular Height Width thickness Depth Rear Connector Plate 2 port Height Width Depth 25 Pin V 35 Interface 3000 Series Carrier Height Width D...

Page 91: ...s 3600 Series Hubbing Device which provides two 8 pin modular jacks Via the SDU in the COMSPHERE 3000 Series Carrier or DC OUT via NMS adapter cable for a tributary in the carrier NETWORK COMPATIBILIT...

Page 92: ...g Device has a 6 inch cable that terminates in a 4 pin modular plug PHYSICAL DIMENSIONS Height Width thickness Depth 1 9 inches 4 8 cm 0 9 inches 2 3 cm 3 4 inches 8 6 cm WEIGHT 0 13 pounds 0 06 kg Ta...

Page 93: ...ified To determine the current firmware version use the Health and Status Identity ID display Refer to the Identity section of Chapter 3 and Table 3 2 When the control DSU firmware version is less tha...

Page 94: ...2 3 xx 3 4 7 xx 3 23 2 3 xx 3 5 8 xx 3 24 3 4 xx 3 1 5 xx 4 40 3 4 xx 3 2 or 3 3 6 xx 4 41 3 4 xx 3 4 7 xx 4 42 3 4 xx 3 5 8 xx 4 43 3 1 5 xx 3 1 5 xx Normal 3 1 5 xx 3 2 or 3 3 6 xx Normal 3 1 5 xx...

Page 95: ...over telephone lines ANSI American National Standards Institute Sets standards for the US computer industry ANSI participates in defining network protocol standards apl Analog Private Line Dedicated p...

Page 96: ...cond Indicates the speed at which data is transmitted between devices BRI Basic Rate Interface ISDN interface consisting of B channel for information transfer and D channel for control and signaling b...

Page 97: ...r to Send A signal indicating that the device is ready for the DTE to transmit data Data mode One of two general operating modes the other is Command mode When in Data mode the modem considers any inp...

Page 98: ...a remote location It uses one multiplexed channel to provide an external 1200 bps asynchronous transparent path for the NMS s control channel dial backup module Ensures continuity of service if a DDS...

Page 99: ...A pattern test run in both directions simultaneously on local and remote devices EPROM Erasable programmable read only memory errored second A performance measurement reported during Digital Test or T...

Page 100: ...MCI and SPRINT Access to these services can be provided through DDS dedicated channels T1 5 dedicated access channel or digital switched access DSA channels IOC ISDN Ordering Code ISDN Integrated Serv...

Page 101: ...it card that contains gold finger contacts and is used with a rear connector plate This circuit card type is easily removed from the front of the carrier without disconnecting the DTE cables MPTC Fact...

Page 102: ...blic Switched Telephone Network A network shared among many users who can use telephones to establish connections between two points rate adaption Used when the DSU or DBM operates at a speed greater...

Page 103: ...and data mode idle DMI signaling in order to ensure protocol independence of primary data while trapping diagnostic data in the DSU switched 56 kbps digital service A service provided by local exchan...

Page 104: ...onnectors In addition a 26 pin high density D type connector is located at the top of the connector module to provide the V 35 interface for either Port 1 or an aggregate data path 6700 Series Network...

Page 105: ...alternate port 1 1 2 3 9 Answer External Dial Backup 4 14 AnswExtBU 4 14 AntiStreaming 4 10 App Modul ID display 3 8 ASPEN App Modul ID display 3 8 async terminal 1 2 C 1 C 8 connection 2 10 front pan...

Page 106: ...B 1 B 2 Conflict w Envir message E 2 connection async terminal 2 10 DDS network 2 8 diagnostic 4 7 DTE 2 9 for V 35 and EIA 232 2 9 LADS distances F 1 F 2 network diagnostic 2 9 control CTS 4 10 RTS...

Page 107: ...save after configuration option changes 3 14 EIA 232 async terminal connection 2 10 DSU to DTE connection 2 9 DTE Port 4 10 interface 1 1 terminal power display 3 7 test mode 2 2 elastic store for eac...

Page 108: ...10 network 1 2 1 5 SNA diagnostic D 1 D 2 Inval Selection message E 2 K keypad operation 3 3 L LADS connection distances F 1 F 2 operation 1 1 Lamp test 3 13 latching loopback 4 4 LCD display 3 3 exa...

Page 109: ...E 3 LPDA PrtSPIncmpt E 4 MCMP CommunicFail E 6 MUX CommunicFail E 7 Device Fail E 7 NetI E 7 NetI F No Signal E 7 No Response E 2 Not in Menu E 2 OutofFrame Thresh E 7 Please wait E 2 Port DTR Alarm E...

Page 110: ...Not In Menu message E 2 O OK LED status indicator 3 4 options changing and saving 2 5 Options Opts Configuration branch 3 14 3 15 Configuration tables 4 1 4 16 Overspeed 4 15 P Packet Delay 4 8 parit...

Page 111: ...2 signal loss circuit quality display 3 7 SNA Backup 4 16 SNA diagnostic interface See LPDA 2 software version control 4 13 G 2 specifications See technical specifications SPID Configuration branch 3...

Page 112: ...2 TxClkSource 4 2 TXD LED status indicator 3 4 TxElasStor 4 3 U United States government requirements C Upstrm Port 4 9 User I F Activ message E 2 Idle message E 2 Usr configuration option sets 2 7 co...

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