DCP Series X.25 Packet Switched Communications Software (PSCS ...

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Introduction 1–2 Section Topic 1.3 X.25 PSCS Restrictions 1.4 DCE Network Limitations 1.5 DCP Loading Over X.25 Networks 1.6 1.6.1 1.6.2 Migration Issues X25ROUTE Statement X.29 PAD/Videotex line indicator option Default Level 4 program option for incoming call routing Using DTE statements as filters for incoming calls Level 4 Program Definition for SNA/net ——————————————————————————————————————— 7831 5470–200
1.1. X.25 PSCS Product Overview Introduction X.35 PSCS continues to support capabilities introduced in previous releases. These are described in this section. ——————————————————————————————————————— 1.1.1. DCE Network Feature The DCE Network feature enables a DCP to function as data circuit-terminating equipment (DCE), allowing directly attached DTEs (DADs) using the X.25 protocol to use a Telcon network as a private X.25 packet network. In addition to network access, a DCE network provides the following capabilities: • Priority virtual circuits, which ensure that traffic on a low priority circuit does not delay traffic on a higher priority circuit. • One-way logical channels, which enable you to reserve certain logical channels for incoming calls and others for outgoing calls. • D-bit and M-bit implementations, which enable you to specify whether the network or the receiving DTE provides acknowledgments. The M-bit implementation enables communicating DTEs to maintain data integrity when the network divides data blocks into smaller packets. • Nonstandard default packet and window sizes, enabling a DTE to select a default packet size other than 128 octets and a default window size other than 2. • Flow control parameter negotiation, enabling a DTE to request specific packet and window sizes on a per call basis during call establishment. • Closed user groups (CUGs), providing a method of restricting access to groups of DTEs. • Reverse charging, which enables sending DTEs to transfer charges for a call to a receiving DTE. • Multilink procedure, allowing individual links to be grouped and treated as a single link, which improves performance because the bandwidth of the group is larger than any single link. It also improves reliability because if one link fails, others may still be available. • Accounting and charging information capability, enabling you to collect and log DTE usage information on a virtual circuit basis. 7831 5470–200 1–3
Page 1 and 2: Product Information Announcement Ne
Page 3 and 4: NO WARRANTIES OF ANY NATURE ARE EXT
Page 5 and 6: Contents vi Section 2. Configuring
Page 7 and 8: Contents viii 5.6. SWITCH — Rerou
Page 9 and 10: Contents x Appendix A. X.25 PSCS Re
Page 11 and 12: Figures xii 4-16. X.29 PAD with Con
Page 13 and 14: About This Guide Purpose Scope The
Page 15 and 16: Section Description Section 4 Confi
Page 17 and 18: Related Product Information About T
Page 19 and 20: Document Name/Number Description DC
Page 21: Section 1 Introduction Section 1 pr
Page 25 and 26: 1.1.3. Idle Trunk Circuit Handling
Page 27 and 28: SNA DCA Introduction X.25 PSCS prov
Page 29 and 30: • Reverse charging, which enables
Page 31 and 32: 1.2. X.25 PSCS Limitations X.25 PSC
Page 33 and 34: 1.4. DCE Network Limitations The DC
Page 35 and 36: 1.6. Migration Issues Introduction
Page 37 and 38: 1.6.2. Level 4 Program Definition f
Page 39 and 40: Configuring Standard X.25 PSCS Capa
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Configuring Standard X.25 PSCS Capa
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Section 3 Configuring a DCE Network
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3.1 Planning the Network Configurin
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3.1.2 Rules for Creating Network Ad
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Figure 3-3 illustrates address comp
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• At least one X25DEF statement t
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Procedure Provide the following sta
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3.2.2 Adding a Node and DTEs to a D
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Example Configuring a DCE Network
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Procedure Configuring a DCE Network
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Configuring a DCE Network ———
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Procedure Provide the following add
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Configuring a DCE Network
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Procedure Provide the following add
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Configuring a DCE Network 3.3 Confi
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Configuring a DCE Network When DTED
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3.3.3 Configuring Reverse Charging
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3.3.5 Configuring DTE Hunt Groups P
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3.3.6 Configuring DTE Subaddresses
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3.3.7 Configuring an ILM-20 Connect
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Example Configuring a DCE Network T
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Configuration Examples 4-2 Section
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Configuration Examples CMS configur
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Configuration Examples 4-6
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Configuration Examples 4.2 DCP-to-D
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Configuration Examples Telcon confi
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Configuration Examples 4.3 DCP-to-D
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Configuration Examples 4.5 DCP-to-U
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Configuration Examples 4-28 Figure
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Configuration Examples 4.8 X.29 PAD
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Configuration Examples 4-42 Figure
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Configuration Examples 4.10 Two-Nod
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Section 5 Using Network Management
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Using Network Management Services (
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TERM=name A terminal to deactivate.
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Figure 5-1 is an example of LIST LI
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5.4 RECORD — Controlling DCE Netw
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5.5 STAT — Displaying Status Form
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5.5.1 STAT LINE Display STAT Figure
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5.5.2 STAT PDTE Display Figure 5-3
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5.5.3 STAT PTRK Display Figure 5-4
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5.6 SWITCH — Rerouting Call Packe
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5.7 TRAC — Message Tracing TRAC T
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DATA Fields for the Items to Trace
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Example 2 Example 2 sets the file s
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5.7.2 TRAC SNAP DCEF Format The TRA
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5.8 UP — Activating a Facility Fo
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Section 6 Using X.25 PSCS Configura
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Section Topic Using X.25 PSCS Confi
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6.2. DTE — Defining Data Terminal
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DCATS=sname A DCATS statement. Use
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RPOA=dnic Specifies the data networ
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6.2.2. DTEs on DCE Networks Format
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Examples DCECUG=(opt,a[,b][,c][,d])
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6.3. DTETYPE — Defining DTE Commu
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X29PAD Specifies an X.29 network PA
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PAKSIZ=(ipps[,opps]) DTETYPE Specif
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Examples Example 1 DTETYPE Example
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6.3.2. DTETYPEs for DCE Networks Fo
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6.4. EU — Defining X.25 PSCS End
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Accunet (USA) Arpac (Argentina) Aus
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Example 4 Example 4 provides the sa
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Example The following example defin
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Example The following example shows
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6.5.2. LCLASS For ILM-20 Lines Form
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Example 2 LINE Example 2 defines a
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6.7.1. PDNGRPs for PDNs and Private
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Examples OPTIONS=(opt1,opt2,...) Sp
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6.7.2. PDNGRPs for the DDN Format P
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IMP=(psn) PDNGRP Specifies an IMP o
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6.7.3. PDNGRPs for DCE Networks For
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Online configuration differences PD
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X3P02=value Defines echo function.
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X3P10=value Defines the line foldin
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X3P19=value X3P20 X3P21 Defines the
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Example 2 PDNPAD Example 2 defines
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Example The following example defin
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6.10. X25DEF — Defining Network C
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Table 6-3. Network Names and Mnemon
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Parameters NAME='net-name' X25DEF S
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DTETYPE=dtype X25DEF Specifies a DT
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L3OPT=(option1,...,option31) Level
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Examples Example 1 Example 1 define
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6.11. X25NET — Defining DCE Netwo
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6.12. X25ROUTE — Specifying Routi
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Example PROTOCOL=(lvl4[,lvl4]...)(A
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Section 7 X.25 PSCS Troubleshooting
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7.2 Verifying Line Operation X.25 P
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7.2.1.2 Determining If X.25 PSCS In
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X.25 PSCS Troubleshooting DCP/OS al
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7.2.2.1 Physical Layer Connection X
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7.3 Verifying Virtual Circuit Conne
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7.3.3 Connection Troubleshooting Ac
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7.4 Verifying Message Data Transfer
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7.4.1.3 Determining Adequate DCP/OS
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Facility Constraints X.25 PSCS Trou
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Appendix A X.25 PSCS Reserved Words
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X.25 PSCS Outgoing Call Routing Con
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X.25 PSCS Outgoing Call Routing Con
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NMS TRAC Command Trace File Formats
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NMS TRAC Command Trace File Formats
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Glossary A asynchronous transmissio
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Glossary data unit control (DUC) Th
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DTP DTPX DUC E See DCA transport pr
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Glossary hunt group An optional X.2
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Glossary logical channel A network
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Glossary packet layer services (PLS
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Glossary Recommendation X.29 A ITU/
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U U Series The family of U 6000 har
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Index A Accunet, 1-7, 6-27, 6-63 to
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Datapac, 1-7, 6-27, 6-63 to 6-64 Da
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M M-bit implementation feature desc
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tracing messages, 5-21 transit dela
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