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Eicon Connections for Linux User’s Guide
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APPENDIX A
X.25 User-Facility Support and Code
References
This section describes X.25 user-facility support features and includes details on DNICs, X.25
diagnostic and cause codes, and ASCII control codes specific to the X.25 protocol.
User-Facility Support
User facilities are optional network services that let you perform tasks such as reversing
charges on your calls, accessing a Closed User Group, or specifying a Network User
Identification (NUI).
Two of Dialogic’s additions to the X.28 Command set—call and conn— support full CCITT Facility
request capability.
Facilities are encoded into the facility field of the call request packet without any interpretation
on the part of the X.PAD program. The facility field contains both facility codes and their
associated parameters. Code format varies, since facilities may have one or more parameters.
You can enter the contents of the user-facilities field in three different formats:
• Hexadecimal numbers separated by commas
• ASCII characters within either single or double quotation marks
• Combination of hexadecimal numbers and ASCII characters
The table below summarizes the facility codes for these facilities, including the applicable
packet types. The facility code is given in hexadecimal.
Facility Codes
Facility Applicable Packet types Code
Call
Request
Incoming
Call
Call
Accepted
Call
Connecte
d
(hex)
Flow Control Parameter
Negotiation (Packet Size)
X X X X 0x42
Flow Control Parameter
Negotiation (Window Size)
X X X X 0x43
Throughput Class Negotiation X X X X 0x02
Closed User Group (CUG)
Selection
X X 0x03
CUG with Outgoing Access
Selection
X X 0x09
Bilateral CUG Selection X X 0x41
Reverse Charging X X 0x01*
Fast Select X X 0x01*
Network User Identification
(NUI)
X X 0xC6
- 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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