H2tu-c bantam jacks, H2tu-r bantam jacks, H2tu-c bantam jacks h2tu-r bantam jacks – ADTRAN HDSL2 User Manual

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HDSL2 for General Distribution Installation and Maintenance Practice

HDSL2 System Testing

61223HDSL2L2-5B

H2TU-C Bantam Jacks

The front panel of an H2TU-C module contains both metallic splitting (

) and monitor (

MON

)

bantam jacks.
The

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 a
test 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 receive
signal. In this configuration, synchronization, test patterns, and other functions can be
observed.
Alternatively, the

MON

jacks can also be used for intrusive testing toward the network. To

utilize this configuration, perform the following steps:

1. Disconnect the H2TU-C DSX-1 interface by opening both the metallic splitting

and

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 is

achieved).

4. Connect the output (TRANS) of the test set to the

MON RX

jack, and the input (REC) of the

test set to the

MON TX

jack.

NOTE

For additional Bantam Jack testing from the Total Access 3000
H2TU-C (P/N 1181113L2), refer to

“Appendix C, Front Panel DSX

and MUX Mode Test Access”

H2TU-R Bantam Jacks

The 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 receive

signals 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 and

permits the connection of test equipment to monitor the characteristics of the signal with
the 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 used
to 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.