Nortel Networks BCM50 - Manual (Page 165)

Chapter 18 Testing basic BCM50 functionality 165
Installation and Maintenance Guide
To check the ATA2 wiring
1 Use an analog phone to test the ATA2.
2 Check the following connections:
a ATA2 to the terminal
The resistance must be 200 ohms or less for data applications and 1300 ohms or less for
voice applications.
b BCM50 hardware to the ATA2
The wiring must be equivalent to 800 m of 0.5 mm wire (2600 ft. of 24-AWG) or less. Do
not use bridge taps and loading coils between the BCM50 hardware and ATA2.
Reset to factory settings
This section describes how to reset the BCM50 system to the factory settings or a stable working
condition using the reset switch (see the figure
Reset switch location on page 165). When the
BCM50 is in this condition, you can make further modifications.
Figure 68 Reset switch location
Some possible situations in which you use the reset feature are:
• If the BCM50 system is configured incorrectly to an extent that it is no longer functional. The
customer must use a level 1 reset to return to the default system programming and restore a
previous configuration or reconfigure the system.
• If distributors want to reuse BCM50 systems, they must first erase all customer-specific data
using a level 1 or level 2 reset.
Reset levels
Reset to factory settings is a stand-alone feature that has the following levels of reset:
• Level 1 reset erases all customer-specific data and restores the default configuration for all
components. This reset leaves the software components untouched. That is, the system has the
latest release and patch level of the software installed. Only the system and user configuration
data is erased and replaced with default values. No Ethernet connectivity to the system occurs
during this operation.
Reset switch