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Model 5399 RAC Digital Modem Configuration Notes

U.S. Operation, Disable V.42bis Compression (V.42 only)

4

Parameter 31:

m1: v34 Full Duplex - Enabled (Default)

Parameter 33:

TrC: Trellis Coding - 4D 16 States (Default)

Parameter 34:

V8: V8 Handshake - Enabled (Default)
E: V34 Extension - v.34 Extended (Default) 

U.S. Operation, Disable V.42bis Compression 
(V.42 only) 

Leave all parameter options set to their default values except:

Parameter 2:

T: Tx V.42bis - Disabled (Not Default)
R: Rx V.42bis - Disabled (Not Default)

required config_bytes setting:

config_bytes 2 =4

U.S. Operation, MNP5 Primary: V.42/V.42bis 
Disabled

Leave all parameter options set to their default values except:

Parameter 0: 

L: LAPM - Disabled (Not Default)

required config_bytes setting:

config_bytes 0 =4

Although other parameters affect V.42 operation, only 
parameter 0 needs to be changed to disable V.42 operation 
completely.

Summary of Contents for 5399

Page 1: ...August 1997 Model 5399 RAC Digital Modem Configuration Notes ...

Page 2: ...tedStatesGovernmentregardingitsuse reproduction anddisclosureareas setforthinthe Commercial Computer Software Restricted Rights clause at FAR 52 227 19 Trademarks of Bay Networks Inc Annex Remote Annex Annex Manager Remote Annex 2000 Remote Annex 4000 Remote Annex 6100 Remote Annex 6300 Remote Annex 5390 Async Remote Annex 5391 CT1 Remote Annex 5393 PRI BayStack Remote Annex 2000 Server 5399 Remot...

Page 3: ...Model 5399 RAC Digital Modem Configuration Notes Revision Level History Revision Description A Initial Release ...

Page 4: ...Model 5399 RAC Digital Modem Configuration Notes ...

Page 5: ...meter Maps and Option Settings 5 Parameter 0 6 Parameter 1 7 Parameter 2 10 Parameter 3 11 Parameter 4 12 Parameter 5 12 Parameter 6 12 Parameter 7 13 Parameter 8 13 Parameter 9 14 Parameter 10 14 Parameter 11 15 Parameter 12 15 Parameter 13 15 Parameter 14 16 Parameter 15 16 Parameter 16 17 Parameter 17 18 Parameter 18 19 Parameter 19 20 Parameter 20 21 Parameter 21 22 Parameter 22 22 Parameter 2...

Page 6: ...arameter 43 37 Parameter 44 37 Parameter 45 37 Parameter 46 39 Parameter 47 40 Parameter 48 41 Parameter 49 41 Parameter 50 41 Parameter 51 41 Parameter 52 42 Parameter 53 42 Parameter 54 42 Parameter 55 42 Parameter 56 43 Parameter 57 43 Parameter 58 43 Parameter 59 43 Parameter 60 44 Parameter 61 44 Parameter 62 44 Parameter 63 44 ...

Page 7: ... to alter the digital modems behavior at a basic level Using the digital_modem Section The digital_modem section of the config annex file can be used to establish user defined modem types and modify the digital modem configuration parameters described in this document An example of the digital_modem section follows below wan begin_session credit_card called_no 103 call_action modem set type_of_mod...

Page 8: ...ponding values for all of the parameters in that series Each parameter s value is a decimal octal or hexadecimal number that is the equivalent of the parameter s binary bit settings the config_bytes keyword does not use values expressed in binary Decimal is the default base for setting parameter values If you set values in octal base precede them with 0 if you set values in hexadecimal base preced...

Page 9: ...Disabled Default B Buffer Enabled Default Parameter 1 D V42 Detection Enabled Default Parameter 2 T Tx V 42bis Enabled Default R Rx V 42bis Enabled Default M MaxStringLength StringLength 16 Default Setting theoption to other values may cause unexpected results D Dictionary Size Dictionary Size 2048 Default Parameter 3 C MNP Class Class 5 Default B MNP Frame Size Frame Size 256 Default Parameter 21...

Page 10: ...sion V 42 only Leave all parameter options set to their default values except Parameter 2 T Tx V 42bis Disabled Not Default R Rx V 42bis Disabled Not Default required config_bytes setting config_bytes 2 4 U S Operation MNP5 Primary V 42 V 42bis Disabled Leave all parameter options set to their default values except Parameter 0 L LAPM Disabled Not Default required config_bytes setting config_bytes ...

Page 11: ..._bytes setting config_bytes 21 1 International Operation Leave all parameter options set to their default values except Parameter 30 A µ Compander type A law Not Default required config_bytes setting config_bytes 30 1 Parameter Maps and Option Settings The default settings for each parameter are shown in binary in the map for the parameter and are displayed in bold in the description for each opti...

Page 12: ...e M MNP MNP is not available in the first release When this option is enabled the modem attempts to establish a Microcom Networking Protocol connection As with LAPM disabling MNP prevents an MNP connection from being made The modem then attempts to make a V 42 connection if enabled or a Buffer mode connection as a last resort 0 Disable 1 Enable B Buffer This option enables or disables data bufferi...

Page 13: ...e 1 Enable B V42 Break A break is an attention key provided on some keyboards for interrupting a transmission from a host Breaks were widely used by terminals communicating with mainframe computers but are rarely used in modern applications such as Internet browsing A break character consists of several character periods of constant Space bits Table 1 and Table 2 below describe how the modem handl...

Page 14: ...eceived Non destructive Expedited Complete data transmission in progress then transmit break Hold data until receive acknowledgment Continue delivering data Continuereceiving data Continuereceiving data Non destructive Non expedited Wait for acknowledgment of data previously transmitted and then transmit break Hold data until acknowledgment received Continue delivering data Continuereceiving data ...

Page 15: ...into the proper sequence This results in a more efficient slightly faster exchange of data 0 Disable 1 Enable Table 2 Receiving DCE Break Handling with Respect to Data Break Handling Option Going to Remote DCE Going to local DTE Destructive Expedited Discard data not yet transmitted Discard data not yet delivered Deliver break signal Non Destructive Expedited No effect Deliver break signal immedia...

Page 16: ...is is the extension to V 42 that provides data compression This parameter allows the modem to selectively disable compression in the receiving direction 0 Disable 1 Enable M Max String Length This parameter defines the maximum number of consecutive characters that are stored in the V 42bis dictionary It optimizes the dictionary and therefore compression for different data types 0 String Length 6 1...

Page 17: ...0 Dictionary Size 512 bytes 1 Dictionary Size 1024 bytes 10 Dictionary Size 2048 bytes Parameter 3 Default config_bytes Setting Decimal base 29 Octal base 035 Hexadecimal base 0x1D C MNP Class This option limits MNP operation to the specified MNP class or lower Classes 1 through 4 support error correction only while class 5 also supports data compression Some early MNP only modems improperly negot...

Page 18: ...d at 128 bytes 0 Block Size 64 1 Block Size 128 10 Block Size 192 11 Block Size 256 Parameter 4 Parameter 5 Parameter 6 Bit 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Value 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Descr Unused Reserved Bit 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Value 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Descr Unused Reserved Bit 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Value 0 0 0 0 0 0 0 0 0 0 0 0 0 0 ...

Page 19: ...carrier for the specified number of seconds the default value is 45 seconds If a carrier is not received within this time the modem hangs up and reports Message No carrier Disconnect reason CD Timer Bit 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Value 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Descr Unused Reserved Bit 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Value 0 0 0 0 0 0 0 0 0 0 1 0 1 1 0 1 Descr Unused Wait C...

Page 20: ...tion and reconnection for the time selected the default is 20 seconds If a carrier is not received within this time the modem hangs up and reports Message No carrier Disconnect reason Retrain timeout Parameter 10 Bit 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Value 0 0 0 0 0 0 0 0 0 0 0 1 0 1 0 0 Descr Unused Retrain Timeout Bit 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Value 0 0 0 0 0 0 0 0 0 0 0 1 0 1 0 ...

Page 21: ...after loss of carrier to report a failure and drop the connection Message No carrier Disconnect reason Carrier lost Parameter 12 Parameter 13 Bit 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Value 0 0 0 0 0 0 0 0 0 0 0 1 0 1 0 0 Descr Unused Lost CD Time Bit 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Value 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Descr Unused Reserved Bit 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Value 0 ...

Page 22: ...es Parameter 14 16 Parameter 14 Parameter 15 Bit 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Value 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Descr Unused Reserved Bit 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Value 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Descr Unused Reserved ...

Page 23: ...the modem supports 0 Reserved 1 Speed 0 300 10 Speed 600 11 Speed 1200 100 Speed 2400 101 Speed 4800 110 Speed 7200 111 Speed 9600 1000 Speed 12000 1001 Speed 14400 1010 Speed 16800 1011 Speed 19200 1100 Speed 21600 1101 Speed 24000 1110 Speed 26400 1111 Speed 28800 10000 Speed 31200 10001 Speed 33600 Bit 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Value 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 1 Descr Unused Maxi...

Page 24: ...he modem supports 0 Reserved 1 Speed 0 300 10 Speed 600 11 Speed 1200 100 Speed 2400 101 Speed 4800 110 Speed 7200 111 Speed 9600 1000 Speed 12000 1001 Speed 14400 1010 Speed 16800 1011 Speed 19200 1100 Speed 21600 1101 Speed 24000 1110 Speed 26400 1111 Speed 28800 10000 Speed 31200 10001 Speed 33600 Bit 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Value 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 1 Descr Unused Maxim...

Page 25: ...he modem supports 0 Reserved 1 Speed 0 300 10 Speed 600 11 Speed 1200 100 Speed 2400 101 Speed 4800 110 Speed 7200 111 Speed 9600 1000 Speed 12000 1001 Speed 14400 1010 Speed 16800 1011 Speed 19200 1100 Speed 21600 1101 Speed 24000 1110 Speed 26400 1111 Speed 28800 10000 Speed 31200 10001 Speed 33600 Bit 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Value 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 Descr Unused Minim...

Page 26: ... modem supports 0 Reserved 1 Speed 0 300 10 Speed 600 11 Speed 1200 100 Speed 2400 101 Speed 4800 110 Speed 7200 111 Speed 9600 1000 Speed 12000 1001 Speed 14400 1010 Speed 16800 1011 Speed 19200 1100 Speed 21600 1101 Speed 24000 1110 Speed 26400 1111 Speed 28800 10000 Speed 31200 10001 Speed 33600 Bit 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Value 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 Descr Unused Minimum...

Page 27: ...ed for cases where certain non standard modems do not support all baud rates 0 2400 1 2743 10 2800 11 3000 100 3200 101 3429 Max Rx baud The maximum reception baud rate the modem supports This parameter is provided for cases where certain non standard modems do not support all baud rates 0 2400 1 2743 10 2800 11 3000 100 3200 101 3429 Bit 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Value 0 0 0 0 0 0 0 0...

Page 28: ...o 33 6Kbps 1 V34 bit rates up to 28 8Kbps 10 V32 V32bis bit rates up to 19 2Kbps 11 V22bis bit rates up to 2400bps Parameter 22 Default config_bytes Setting Decimal base 176 Octal base 0260 Hexadecimal base 0xB0 Bit 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Value 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Descr Unused Reserved Modulation Bit 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Value 0 0 0 0 0 0 0 0 1 0 1 1 0 0...

Page 29: ...backwhenqualityisbad Whenthisoptionisenabled themodem will fall back to a lower speed of operation that is less demanding of the phone line quality during the initial handshake This occurs when the received signal quality is below the Signal Quality threshold specified in Parameter 33 0 Disable 1 Enable RN Renegotiates the rate upward when quality improves during a call When enabled the modem paus...

Page 30: ...ase 037 Hexadecimal base 0x1F Bit 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Value 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Descr Unused Reserved Bit 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Value 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Descr Unused Reserved Bit 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Value 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 Descr Unused MC R AB PR Pre emphasis Filter ...

Page 31: ... accordingly when establishing a V 34 connection 0 Disable 1 Enable AB Asymmetric Baud Rates This is the ability of the modem to operate at different baud rates for transmission and reception It allows the modem to take advantage of differing line conditions in either direction 0 Disable 1 Enable MC Mandatory Carrier Frequency This option effective only if Channel Probing is disabled allows you to...

Page 32: ... phase phase 4 of training The default setting Negotiable allows the modem to make this determination 0 Negotiable 1 Training 4 points 10 Training 16 points 11 Reserved PREC Precoding Precoding is a non linear equalization method that uses information provided by the remote modem to reduce equalizer noise enhancement caused by amplitude distortion 0 Negotiable 1 Mandatory 10 Disable 11 Reserved Bi...

Page 33: ...Nonlinear encoding is a method for improving distortion immunity near the perimeter of a signal constellation by introducing non uniform two dimensional signal point spacing 0 Negotiable 1 Mandatory 10 Disable 11 Reserved Parameter 28 Default config_bytes Setting Decimal base 14 Octal base 016 Hexadecimal base 0xE O1 Optional Baud Rate 2743 This supports certain country specific spectral requireme...

Page 34: ...onfig_bytes Setting Decimal base 31 Octal base 037 Hexadecimal base 0x1F Options R1 through R5 refer to combinations of baud or symbol rate and carrier frequency pairs You can disable pairs selectively in order to troubleshoot certain international modem problems R1 3000 1800 Enables disables 3000 baud low carrier frequency operation 0 Disable 1 Enable R2 3000 2000 Enables disables 3000 baud high ...

Page 35: ... 0 Disable 1 Enable R5 3429 1959 Enables disables 3429 baud rate operation 0 Disable 1 Enable Parameter 30 Default config_bytes Setting Decimal base 3 Octal base 03 Hexadecimal base 0x3 D Usb1EarlyDetector Detectionofunscrambledbinaryonessupports V 34 modems under certain South American line conditions 0 Disable 1 Enable Bit 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Value 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1...

Page 36: ...w Parameter 31 Default config_bytes Setting Decimal base 26 Octal base 032 Hexadecimal base 0x1A m1 v34 Full Duplex Enables disables V 34 operation 0 Disable The modem will falls back to V 32bis operation 1 Enable m3 v32 v32bis Enables disables V 32 operation 0 Disable The modem still operates at V 34 speeds and at V 22bis 1 Enable m4 v22 v22bis Enables disables V 22bis operation 0 Disable The mod...

Page 37: ...ing a type of forward error correction used bythe modem receiver during V 34 connections 0 Negotiable 1 4D 16States 10 Reserved 11 Reserved T v32 9600 Trellis Coding Enables disables trellis coding at 9600 bps 0 Disable 1 Enable Bit 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Value 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Descr Unused Reserved Bit 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Value 0 0 0 0 0 0 0 0 0 0 0...

Page 38: ... example when this option is set to 0 the modem indicates an error when it detects one bit in error for every 1x104 bits received 0 104 1 106 Parameter 34 Default config_bytes Setting Decimal base 99 Octal base 0143 Hexadecimal base 0x63 Eq Equalizer Type This is for V 32 operation only and is provided to support certain international line conditions 0 No compromise 1 Equalizer 1 10 Equalizer 2 11...

Page 39: ...ased this option disables extended 33 6Kbps operation 0 v 34 Bis 1 v 34 Extended Parameter 35 Default config_bytes Setting Decimal base 0 Octal base 00 Hexadecimal base 0x0 EP Echo Protection Tone When this option is enabled the modem sends an unmodulated carrier signal prior to the training and data signals to disable the telephone network echo suppressor 0 Disable 1 Short 10 Long 11 Reserved Bit...

Page 40: ...pace option 0 Long 1 Short S1 V22bis S1 Sequence Thisoptionaffectsthedurationof theS1 signal during a V22bis handshake It is used to support certain older V 22bis modems 0 100 ms 1 150 ms RL V25 Calling Tone V25 calling tone This tone is used in some international modems to identify a data call from a voice call 0 Disable 1 Enable Parameter 36 Parameter 37 Bit 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0...

Page 41: ...by the modem s normal far end echo canceller In a very few situations the telephone company converts the digital connection to two wire analog and then back to digital before it is routed to the distant phone company where the expected two wire conversion is then performed This additional conversion results in an unexpected near end echo which may be compensated for by enabling this parameter This...

Page 42: ...lue 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Descr Unused Reserved Bit 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Value 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Descr Unused Reserved Bit 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Value 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Descr Unused Reserved Bit 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Value 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Descr Unused Reserved ...

Page 43: ...al base 05 Hexadecimal base 0x5 Bit 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Value 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Descr Unused Reserved Bit 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Value 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Descr Unused Reserved Bit 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Value 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 1 Descr Unused CPM Threshold CPM Filter ...

Page 44: ...k etc frequencies throughout the world 0 General purpose 1 Belgium 10 Holland 11 Not used 100 Austria 101 USA 110 Reserved CPM Threshold Call Progress Threshold dBm This sets the minimum level of call progress tones that will be detected by the modem 0 50 1 48 10 46 11 44 100 42 101 40 110 38 111 36 1000 34 1001 32 1010 30 1011 28 1100 26 1101 24 1110 22 1111 20 ...

Page 45: ...wer Tone Threshold dBm Used in originate mode only this sets the minimum level that the modem requires to detect the answering modem s answer tone 0 50 1 48 10 46 11 44 100 42 101 40 110 38 111 36 1000 34 1001 32 1010 30 1011 28 1100 26 1101 24 1110 22 1111 20 Bit 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Value 0 0 0 0 0 0 0 0 0 0 1 0 0 0 1 1 Descr Unused GF GT AP AF AT Threshold ...

Page 46: ...in the telephone network This can be heard as the ding ding ding sound heard during the early portion of the modem s handshake It almost never should be disabled except in some unusual international lines 0 Disable 1 Enable GT Guard tone Some national regulatory agencies require guard tones on systems that use international telephone circuits for V 22 and V 22bis modes only 0 Disable 1 Enable GF G...

Page 47: ...lue 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Descr Unused Reserved Bit 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Value 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Descr Unused Reserved Bit 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Value 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Descr Unused Reserved Bit 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Value 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Descr Unused Reserved ...

Page 48: ...lue 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Descr Unused Reserved Bit 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Value 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Descr Unused Reserved Bit 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Value 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Descr Unused Reserved Bit 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Value 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Descr Unused Reserved ...

Page 49: ...lue 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Descr Unused Reserved Bit 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Value 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Descr Unused Reserved Bit 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Value 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Descr Unused Reserved Bit 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Value 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Descr Unused Reserved ...

Page 50: ...lue 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Descr Unused Reserved Bit 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Value 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Descr Unused Reserved Bit 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Value 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Descr Unused Reserved Bit 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Value 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Descr Unused Reserved ...

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