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To configure the T1 Nx64 HTU-R, first familiarize
yourself with the operation of the front panel LCD
and push buttons. Then follow the steps listed
below.
Step 1. Apply power to the T1 Nx64 HTU-R using
a customer provided power cord. The front panel
LCD will indicate that the T1 Nx64 HTU-R is
initializing. Upon completion of initialization, the
T1 Nx64 HTU-R will display its user menu. The
user can now configure the T1 Nx64 HTU-R.
Step 2. The T1 Nx64 HTU-R comes factory default
configured as a Slave unit. To properly configure
the T1 Nx64 HTU-R, the user must configure the
HDSL interface options concerning
T1 Nx64 HTU-R mode (Master/Slave) and the
T1 Nx64 HTU-R clock source (Network/Internal/
DTE). Next the user must configure the DTE
interface options. The following factory default
configuration options are recommended for the
Slave unit.
HTU MODE: SLAVE (HTU-R)
CLOCK SOURCE: NETWORK
DTE INT. TYPE: V.35
RATE 56/64: 64
CHANNELS: CONT
DTE TX CLK: AUTO
START CHAN: 01
# OF CHAN: 24
DATA: NORMAL
CTS: NORMAL
DCD: NORMAL
DSR: NORMAL
If two T1 Nx64 HTU-Rs are deployed as Master and
Slave, follow Step 3 to properly configure the
Master unit. If you are deploying the
T1 Nx64 HTU-R as a remote unit in a circuit with
an ADTRAN T1 HTU-C, verify that the HTU-C is
properly installed and configured according to the
appropriate ADTRAN T1 HTU-C Installation and
Maintenance Practice and proceed to Step 4.
Step 3. Configure the second T1 Nx64 HTU-R as a
Master unit. To properly configure the
T1 Nx64 HTU-R, the user must configure the HDSL
interface options concerning.
T1 Nx64 HTU-R mode (Master/Slave) and the
T1 Nx64 HTU-R clock source (Network/Internal/
6
DTE). Next the user must configure the DTE
interface options. Descriptions and explanations of
all configuration options are shown in Table 2.
HTU MODE: MASTER (HTU-C)
CLOCK SOURCE: INTERNAL
DTE INT. TYPE: V.35
RATE 56/64: 64
CHANNELS: CONT
DTE TX CLK: AUTO
START CHAN: 01
# OF CHAN: 24
DATA: NORMAL
CTS: NORMAL
DCD: NORMAL
DSR: NORMAL
Step 4. If you plan on using a VT-100 or
compatible terminal for maintenance, and
diagnostics, connect an RS-232 cable to the 9-pin
DB9 female connector. Connect the other end to the
dumb terminal. Use of the dumb terminal for
maintenance, and diagnostics is described in
subsection 4 of this practice.
Connecting T1 Nx64 HTU-R to HDSL Local
Loop
The T1 Nx64 HTU-R connects to the HDSL local
loop using an RJ-48C connector. This connection is
made through a user-supplied cable. You will need
to construct this cable in order to ensure proper
connections between the HDSL local loop and the
T1 Nx64 HTU-R. This cable should be constructed
to match the HDSL local loop signals on one end
and the T1 Nx64 HTU-R HDSL loop signals on the
other end. The RJ-48C connector pin designations
are detailed in Table 3.
Table 3. T1 Nx64 HTU-R HDSL Interface
Section 61245023L1-5B, Issue 2
Pin Assignments
Pin
Signal
1 ................... HDSL Loop 1 Ring
2 ................... HDSL Loop 1 Tip
3 ................... Not used
4 ................... Not used
5 ................... Not used
6 ................... Not used
7 ................... HDSL Loop 2 Ring
8 ................... HDSL Loop 2 Tip
61245023L1-5B
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