Test Lines for CCITT 7 ISUP Trunks in a DMS-300
The CCITT-recommended digits for the T100 test line are 64. To use the T100 test line on a CCITT trunk, the entry in field TSTNOIND (table CLLIMTCE) must point to subtable TSTLCONT.TLNOS, which translates the T100 test line code to 64. The required datafill for fields TESTLINE, TLNUMBER, and TL_MFC_OG_SIG are shown in Table 4 below.
----------------------------------------------------------------------------------------- Table 4 CCITT 7 ISUP Protocol Datafill TESTLINE TLNUMBER TC_MFC_OG_SIG ----------------------------------------------------------------------------------------- T100 64 N -----------------------------------------------------------------------------------------
Originating 105 Test Line
Each Transmission Test Unit (TTU) circuit consists of a control signal generator card and a digital filter. Table 5 lists pairs of interconnected cards that can be provisioned together to form a TTU for the listed test procedure type.
----------------------------------------------------------------------------------------- Table 5 Transmission Test Unit Pairs Control Signal Generator Digital Filter Test Procedure Type ----------------------------------------------------------------------------------------- NT2X47AA NT2X56AA ATME2 (rated MD) NT2X47AB NT2X56AA ATME2 (DMS-300 switching units) NT2X47AC NT2X56AB ATME2 (104 test line) and ATMS (105 test line) NT2X47AD NT2X56AB ALT (Automatic Line Testing) and ATMS (105 test line) NT2X47BA NT2X56BA International (A-law) ATME and ATMS -----------------------------------------------------------------------------------------
Originating 105 Test Line - New Tests Provided with NT2X47AD
Table 6 shows the new tests provided by the NT2X47AD card.
----------------------------------------------------------------------------------------- Table 6 New Tests for Originating 105 Test Line Test Description of Test ----------------------------------------------------------------------------------------- ERL Echo Return Loss measurement with quiet termination ERLSC Echo Return Loss Self-Check with quiet termination ----------------------------------------------------------------------------------------- -continued-