MTP 2 Testing The MTP 2 test specification is found in ITU [87]. The purpose of the tests is to ensure complete validation and compatibility of an SP's MTP 2 protocol according to ITU [51]. | MTP 2 Testing The MTP 2 test specification is found in ITU 87 . The purpose of the tests is to ensure complete validation and compatibility of an SP s MTP 2 protocol according to ITU 51 . See Chapter 6 Message Transfer Part 2 MTP2 for a description of the MTP2 protocol. The tests are split up by functional area into ten categories. Table 16-1 shows the test categories and the tests that they contain. Table 16-1. Test Categories and Numbers Found in Category Test Number s Total Link state control expected signal units orders 35 Link state control unexpected signal units orders 8 Transmission failure 8 Processor outage control 3 SU delimitation alignment error detection and correction 5 SUERM check 4 AERM check 4 Transmission and reception control basic 13 Transmission and reception control PCR 13 Congestion control 4 Totals 97 The remainder of this section explains fourteen of these tests covering at least one from each category. The tests explained include and . These numbers refer to the test numbers that are allocated in . Many of the tests that are not used as examples are variations of the example tests given therefore taking at least one test out of each category gives the reader a good understanding of the test methods. Test Configuration A single link is used for MTP2 tests. Figure 16-1 shows a single link between SP A and SP B. SP A is the device under test DUT while SP B is the Tester. Figure 16-1. Test Configuration Used for MTP2 Testing Example 1 Initialization Power-up Test This test ensures that the DUT enters the correct state upon power up and that it is used for both validation and compatibility testing purposes. It consists of two parts part a and part b . Part b is the same test repeated in the reverse direction. Part a Before beginning this test switch the DUT off and the tester
