C/C-ISO/IEC ISP 10608-5-99 (R2003)

1. Scope
 
 1.1 General
 This part of ISO/IEC ISP 10608 specifies subnetwork-type dependent requirements for end system operation when the end system is attached to an X.25 packet-switched data network by a dedicated (permanent) access line and using switched virtual calls. The Directory of Profiles and ISPs in ISO/IEC TR 10000 identifies this TA profile configuration as TA1111 or TA1121. The complete set of requirements for TA11n1 consists of the requirements specified in ISO/IEC ISP 10608-1 and ISO/IEC ISP 10608-5.
 
 1.2 Position of Profile Within the Taxonomy
 ISO/IEC ISP 10608-5 covers the taxonomy elements identified as TA in the Directory of Profiles and ISPs contained in ISO/IEC TR 10000-2. These elements constitute Transport profiles, group A: Connection-mode Transport Service over Connectionless-mode Network Service.
 
 This clause specifies requirements for the profile identified in ISO/IEC TR 10000 as TA11n1, Connection-mode Transport Service provided over the Connection less-mode Network Service through dedicated (permanent) access to an X.25 packet-switched data network using virtual calls.
 
 Figure 1 illustrates the standards which comprise the TA1111 and TA1121 profiles.
 
 1.3 Scenario
 Figure 2 illustrates the configuration of systems to which TA11n1 is applicable.