This part of ISO\/IEC 8882 defines an abstract test suite for testing the conformance of the Data Link Layer of an IUT with<\/p>\n
respect to ISO\/IEC 7776 (1986, 1995) or the ITU-T Recommendation X.25 (1980, 1984, 1988, 1993).<\/p>\n
Conformance of a Data Terminal Equipment (DTE) to the above ISO International Standard or ITU-T Recommendations is<\/p>\n
tested using a dedicated circuit between the tester and the DTE. It is noted that ITU-T Recommendations X.25 (1980), X.25<\/p>\n
(1984), X.25 (1988) and X.25 (1993) are written from the perspective of a DCE and therefore do not always explicitly specify the<\/p>\n
DTE's operation. In such cases it is assumed that recommended operation of a DTE is included by implication because of the<\/p>\n
need to communicate with X.25 DCE's. This part of ISO\/IEC 8882 excludes the testing of the LAP procedures given in the ITU-T<\/p>\n
Recommendations.<\/p>\n
NOTE Test cases for extended mode operation (Modulo 128), multilink procedure and DTE-DTE operation as per ISO\/IEC 7776 are for<\/p>\n
further study.<\/p>\n
The tests in this part of ISO\/IEC 8882 are designed for six possible interworking situations, shown in Figure 1. This part<\/p>\n
specifies tests for all six cases shown in Figure 1, but recognizes that not every test may apply to a particular DTE. A test<\/p>\n
selection procedure has to be performed to determine the applicability of a test to a particular DTE. Such selection will be based<\/p>\n
on the PICS and the PIXIT.<\/p>\n<\/p>\n
Figure 1 \u2014 Testing X.25-DTE\/DCE and X.25-DTE\/DTE Interworking<\/b><\/p>\n
In the rest of this part of ISO\/IEC 8882, the term "X.25 standards" means all four of ITU-T Recommendations X.25 (1980), X.25<\/p>\n
(1984), X.25 (1988), X.25 (1993), and International Standards ISO\/IEC 7776 (1995) and ISO\/IEC 7776 (1986), unless stated<\/p>\n
otherwise.<\/p>\n","protected":false},"excerpt":{"rendered":"
Information technology \u2014 Telecommunications and information exchange between systems \u2014 X.25 DTE conformance testing \u2014 Part 2: Data link layer conformance test suite<\/b><\/p>\n\n\n
\n Published By<\/td>\n Publication Date<\/td>\n Number of Pages<\/td>\n<\/tr>\n \n ISO<\/b><\/a><\/td>\n 2000-04<\/td>\n 18<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":636250,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[671,2634],"product_tag":[],"class_list":{"0":"post-636237","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-35-100-30","7":"product_cat-iso","9":"first","10":"instock","11":"sold-individually","12":"shipping-taxable","13":"purchasable","14":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/636237","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media\/636250"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=636237"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=636237"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=636237"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}