Product specifications

26 Issue 1, November 2003 61181113L2-5A
The General Information screen (Figure 37) shows the
Loop Deployment Guidelines for this type of circuit.
Should trouble occur on the circuit, many test details are
available here.
Ability to download new firmware for the unit is
available via the Total Access H2TU-C
Flash Image
screen (Figure 38). This feature allows the download
and installation of a firmware upgrade. Any existing
provisioning setting will be retained, while new provi-
sioning items will assume the factory default settings.
Prior to installing, the H2TU-C will confirm that the
firmware is correct. When initiated, setup instructions
will be displayed on the craft access terminal.
Figure 37. General Information Screen
Figure 38. Total Access 3000 H2TU-C Flash Image Screen
Shelf: 1 Slot: 14 Total Access System 10/28/03 08:59
Unacknowledged Alarms: INFO
Circuit ID:
HDSL2 Loop Guidelines for optimum operation
-------------------------------------------
Non-loaded cable pair
Single bridge tap < 2Kft
Total bridge taps < 2.5Kft
Bridge tap within 1000ft of transceiver may affect performance.
Impulse noise < 50dBrnF (F filter)
Wideband noise < 31dBrnF (f filter)
Power influence <= 80 dBrnC
Longitudinal Balance >= 60dB (If using Wideband test at 196 Khz >= 40dB)
Foreign DC Voltage (t-r,t-g,r-g) < 3VDC
Loop Resistance <= 775 ohms
Margin >= 6 dB
Attenuation <= 28 dB
Selection:
Shelf: 1 Slot: 14 Total Access System 10/28/03 08:59
Unacknowledged Alarms: INFO
Circuit ID:HntsvlALMn0103
SW Ver Checksum
H2TU-C Flash Image: A01 DD85
Software Update
1. Download H2TU-C via Y-Modem
2. Download H2TU-C via TFTP
3. Boot Block Status and Overwrite Password
Selection: