Telecommunications - Configuration of X.25 Networks


International Access

Tariffs

Security

Overview of service options

X.2 options comparison of networks


X.25 Physical layer


X.25 link level parameters



X.25 packet level procedures

7.1.2 Virtual Circuits

7.1 CALL REQUEST PACKET

7.1 INCOMING CALL PACKET

7.2 CALL ACCEPTED PACKET

7.2 CALL CONNECTED PACKET

7.3 CLEAR REQUEST PACKET

7.3 CLEAR INDICATION PACKET

7.4 CLEAR CONFIRMATION PACKET

7.5 DATA PACKET

7.6 - RR PACKET

7.7 RNR PACKET

7.8 REJ PACKET

7.9 RESET REQUEST PACKET

7.9 RESET INDICATION PACKET

7.10 RESET CONFIRMATION PACKET

7.11 INTERRUPT PACKET

7.12 INTERRUPT CONFIRMATION PACKET

7.13 RESTART REQUEST PACKET

7.13 RESTART INDICATION PACKET

7.14 RESTART CONFIRMATION PACKET

7.15 on-line facility registration

7.16 on-line facility confirmation

7.17 Diagnostic Packet

7.18 Diagnostic Codes


CCITT X.2 Per-call facility options

8.1 Flow control parameter negotiation

8.2 Throughput class negotiation facility

8.3 Closed User Group Selection facility

8.4 Closed User Group with Outgoing Access Selection

8.5 Bilateral Closed user group facility

8.6 Reverse charging facility

8.7 Fast select facility

8.8 Network User Identification (NUI) facility

8.9 Charging Information facilities

8.10 RPOA selection

8.11 Call deflection selection facility

8.12 Call redirection or deflection notification (CRN)

8.13 Called line address Modified Notification(CLAMN)

8.14 Transit Delay Selection and indication

8.15 Abbreviated Address Calling


9 - CCITT defined DTE facilities

9.1 Calling Address extension facility

9.2 Called Address extension facility

9.3 Minimum Throughput Class

9.4 end-to-end transit delay

9.5 priority facility

9.6 Protection facility

9.7 Expedited data negotiation facility


CCITT X.2 L3 Subscription options

10.1 On-line facility registration

10.2 Extended Packet Sequence Numbering

10.3 D-bit modification

10.4 Packet Retransmission

10.5 Incoming Calls Barred

10.6 Outgoing Calls Barred

10.6 Outgoing Calls Barred

10.7 One-way Logical Channel Outgoing

10.8 One-way Logical Channel Incoming

10.8 One-way Logical Channel Incoming

10.9 Nonstandard Default Packet sizes

10.10 Nonstandard Default Window sizes

10.11 Default Throughput Classes Assignment

10.10 Nonstandard Default Window sizes

10.11 Default Throughput Classes Assignment

10.12 Flow control Parameter Negotiation

10.13 Throughput Class Negotiation

10.14 Closed user group

10.15 Closed user group with Outgoing Access

10.16 Closed user group with Incoming Access

10.17 Incoming Calls Barred within a CUG

10.18 Outgoing Calls Barred within a CUG

10.15 Closed user group with Outgoing Access

10.16 Closed user group with Incoming Access

10.17 Incoming Calls Barred within a CUG

10.18 Outgoing Calls Barred within a CUG

10.19 Bilateral Closed User Groups

10.20 Bilateral CUG with outgoing Access

10.20 Bilateral CUG with outgoing Access

10.21 Fast Select Acceptance

10.22 Reverse Charging Acceptance

10.23 Local charging prevention

10.24 Network User Identification (NUI)

10.25 NUI override

10.26 Charging information

10.27 RPOA Subscription

10.28 Hunt Group

10.29 Call redirection

10.30 Call deflection subscription

10.31 TOA/NPI address subscription

10.32 Direct Call

11 quality of service parameters

11.1 Call request delay

11.2 DATA packet transfer delay

11.3 Established Call Clear

11.4 Spontaneous Resets

Timers

Other Subjects

X32 configuration

X75 configuration

UKa specific configuration options


Glossary

BSI British Standards Institute
BT British Telecom plc
CCITT International Telephone and Telegraph Consultative Committee
CLAMN Called line address modified notification
CRN Call redirection notification
CUG Closed User Group
DCE Data Circuit-terminating Equipment (Network end of link)
DNIC Data Network Identification Code
DTE Data Terminal Equipment (Customers terminal equipment)
UK Global Network Service
UK(a) Existing UK X.25 service
UK(b) Enhanced Worldwide X.25 service
ICUG International Closed user group
ISO International Organisation for Standardisation
LCN Logical Channel Number
LCGN Logical Channel Group Number
NUA Network User Address
NUI Network User Identification
ONA Open network architecture
PAD Packet Assembler/Dissassembler
PVC Permanent Virtual Circuit
QOS Quality Of Service
RPOA Recognised Private Operating Agency
SVC Switched Virtual Circuit
X.2 CCITT Optional User Facilities
X.25 CCITT packet terminal interface recommendation
X.28 CCITT start-stop terminal interface recommendation
X.75 CCITT packet internetwork interface recommendation

 


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