Provisioning HDSL2 for General Distribution Installation and Maintenance Practice10 61223HDSL2L2-5BTotal Access 3000 H2TU-C Edge ConnectorThe Total Access 3000 shelf delivers DSX-1 from the network to the H2TU-C via connectors onthe backplane labeled Pair 7 and Pair 8. The HDSL2 signal is provided toward the customer viathe backplane connector labeled Pair 2. Pins 1 and 33 of the connectors Pair 7 and Pair 8 arethe DSX connections for the H2TU-C in slot 1. Pins 2 and 34 of these connectors areassociated with slot 2. Pins 3 and 35 are associated with slot 3, and so forth, up to pins 28and 60 for slot 28.Figure 6. HDSL2 Edge Connector Wiring, continuedPROVISIONINGHDSL2 Configuration is performed via software control. For more information, refer to“Control Port Operation” on page 17. The provisioning settings can be viewed and manipu-lated through access to the firmware via the front panel RS-232 port. Table 6 lists theavailable provisioning options and their factory default settings.123456789101112131415161718192021222324252627282930313212345678910111213141516171819202122232425262728293031321234567891011121314151617181920212223242526272829303132P2, Row A P2, Row B P2, Row C- 48 volt returnInterrupt RequestMUX B Receive DataMUX A Receive ClockMUX A Receive DataChassis groundChassis groundSCU Control LeadFuse alarmInterrupt Request SelectMUX B Transmit ClockMUX A Transmit ClockTest access bus Loop ringTest access bus Loop tipReceive DSX-1 Ring backup connectionTransmit DSX-1 Ring backup connectionReceive DSX-1 Ring normal connectionTransmit DSX-1 Ring normal connection- 48 volt return- 48 volt DC A- 48 volt DC AHDSL2 Loop Ring (facility)HDSL2 Loop Tip (facility)SCU Control LeadSCU Control LeadSCU Serial InterfaceMUX B Transmit DataMUX B Receive ClockMUX A Transmit DataReceive DSX-1 Tip backup connectionTransmit DSX-1 Tip backup connectionReceive DSX-1 Tip normal connectionTransmit DSX-1 Tip normal connection- 48 volt DC B- 48 volt DC BTotal Access 3000H2TU-C Edge Connector Wiring
