Eicon Networks S52 Betriebsanweisung Seite 66
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X.25 User-Facility Support and Code References
page 64
Window sizes of 1 to 7 are standard. Window sizes of 8 to 127 are valid only if extended
sequence numbering is used. The default window size is 2. A value of 0 is not allowed.
Fast Select
The fast select facility is controlled by bits 6 and 7 of the octet in the parameter field. If fast
select is not requested then bits 6 and 7 are set to 0. If fast select is requested with no
restriction on response then bit 6 is set to 0 and bit 7 is set to 1. Otherwise, if fast select is
requested with a restriction on response then bits 6, 7 are set to 1.
*See Reverse Charging on page 66.
Bits 1, 2, 3, 4, 5 may be used for other facilities or set to 0
Note: The reverse charging and Fast Select facilities share the same facility code and may be
used concurrently.
Throughput Class Negotiation
The throughput class for transmissions from the remote DTE is represented in the high nibble
of the octet in the parameter field. The throughput class for transmissions from the local DTE
is indicated in the low nibble.
Fast Select Values
Bit 7 Bit 6 Meaning
0 0 Fast Select not requested
1 0 Fast Select requested with no restriction on
response
1 1 Fast Select requested with restriction on
response
0
Fast Select
0 0
6
00
7 345
100
012
Code
Octet 1
Bit
Fast Select
*
0
Remote DTE
0 0
6
00
7 345
010
012
Local DTE
Code
Octet 1
Bit
Throughput Class
- User’s Guide 1
- page 4 4
- Contents 5
- About this Guide 7
- Typographic Conventions 8
- CHAPTER 2 9
- Eiconcard Services 10
- Eiconcard Host PAD Driver 11
- Eiconcard Terminal PAD Driver 11
- Eiconcard Routing Services 12
- Eiconcard SNMP Services 13
- Integrating with OSI 13
- OSI Model 14
- For More Information 15
- page 14 16
- CHAPTER 3 17
- Completing the Installation 18
- Removing Eiconcard Router 18
- Removing Eiconcard Services 19
- Introduction 19
- Install an Eiconcard 19
- Uninstall an Eiconcard 20
- Configure Eiconcard Protocol 20
- High-Level Services 21
- Line Protocols 21
- Dialer Selection 21
- Changing Protocol Parameters 22
- Eiconcard Memory Requirements 22
- Online Help 23
- Configuration Procedure 24
- Configure Advanced Options 25
- Configure the PAD 25
- page 24 26
- Terminal PAD 27
- page 26 28
- Using tpad with cu and uucp 29
- The cu Commands 30
- page 30 32
- X.3 PAD Parameters 33
- The uucp Configuration Files 33
- Using uucp and cu 34
- page 34 36
- CHAPTER 5 37
- page 36 38
- Load the mpr.if file 40
- IP Routing Tables 40
- Displaying IP-routing Entries 42
- Testing Your Installation 42
- The Test System 43
- Resources for the Test System 43
- The Addressing Scheme 43
- Configuring the Eiconcards 44
- Creating an X.25 Test Circuit 45
- Troubleshooting 46
- Setting Up a PPP Connection 48
- page 48 50
- page 50 52
- page 52 54
- CHAPTER 6 55
- Load/Self-test Timeout Period 56
- Watchdog Wake Up Period 56
- X.25 socket driver 56
- Modem and Null-Modem Cables 57
- Establishing Contact 58
- Modem Cables 59
- HSI/V.24 Converter 60
- Null-Modem Cables 61
- X.21 HSI Null-Modem Cable 62
- References 63
- Facility Types 64
- Facility Syntax 64
- Examples of User Facilities 64
- Packet size 65
- Window Size 65
- Fast Select 66
- Throughput Class Negotiation 66
- Bilateral CUG Selection 68
- Reverse Charging 68
- Priority Traffic: 0,0,1,1 69
- Traffic: 69
- 1,1,0,0,1,1 69
- Networks and DNICs 70
- X.25 Diagnostic Codes 71
- page 70 72
- X.25 Cause Codes 73
- ASCII Control Codes 74
- page 74 76
- X.29 Call User Data Format 77
- page 76 78
- Key Packet Formats 79
- Call Accepted Packet Format 80
- Clear Request Packet Format 81
- 2:n Echo 85
- 5:n Auxiliary Device Control 85
- page 84 86
- 8:n Discard data 87
- 9:n Carriage return padding 87
- 10:n Line folding 87
- 11:n Communication speed 87
- 15:n Editing 88
- 14:n Linefeed padding 88
- 16:n Character delete 89
- 17:n Line delete 89
- 18:n Line redisplay 89
- 19:n Editing service signals 89
- 20:n Echo mask 90
- 21:n Parity treatment 90
- 22:n Page wait 90
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