ADTRAN HDSL2 Installation And Maintenance Practice

Also see for 1223024L2: Installation and maintenance practice Manual

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ADTRAN HDSL2 Installation And Maintenance Practice Manual pdf 23 page image

HDSL2 for General Distribution Installation and Maintenance Practice HDSL2 System Testing61223HDSL2L2-5B 13H2TU-C Bantam JacksThe front panel of an H2TU-C module contains both metallic splitting (EQ) and monitor (MON)bantam jacks.The EQ jacks provide an intrusive access point, interrupting signal access to the local loop.This will enable the user to transmit a test signal toward an H2TU-R module and to receive atest signal from an H2TU-R module.The MON jacks, when connected to a bit-error rate test set that is configured for monitor(bridging) mode, provide a nonintrusive test access point for observing the transmit or receivesignal. In this configuration, synchronization, test patterns, and other functions can beobserved.Alternatively, the MON jacks can also be used for intrusive testing toward the network. Toutilize this configuration, perform the following steps:1. Disconnect the H2TU-C DSX-1 interface by opening both the metallic splitting TX and RXEQ jacks with either a bantam open plug or a bantam test cord that is not terminated.2. Configure a test set for Terminate mode.3. Connect the test set to the MON jacks. (Test access toward the network equipment isachieved).4. Connect the output (TRANS) of the test set to the MON RX jack, and the input (REC) of thetest set to the MON TX jack.NOTEFor additional Bantam Jack testing from the Total Access 3000H2TU-C (P/N 1181113L2), refer to “Appendix C, Front Panel DSXand MUX Mode Test Access”.H2TU-R Bantam JacksThe DS1 monitoring from the H2TU-R is accomplished using the MON bantam jacks.The jacks labeled MON provide a test access point for monitoring the transmit and receivesignals at the DS1 interface point. The bridging jacks can be used in two different ways:1. The bridging jack of an H2TU-R module provides a nonintrusive tap onto a signal line andpermits the connection of test equipment to monitor the characteristics of the signal withthe DS1 test set optioned for Bridging mode.2. If the DS1 test set is optioned for Terminate mode and the customer DS1 is disconnected,then the bridging jack of an H2TU-R module provides an intrusive tap and could be usedto transmit and receive signals between an H2TU-R module and the network.Figure 7 illustrates the complete bantam jack arrangement and details for specific jacks.