Troubleshooting
150-357-200-02, Issue 2
54
February 9, 1999
HXU-357 List 1
All affected lines must be Out-of-Service and Unequipped
during loopback testing to prevent unwanted protection
switching from occurring. See “Placing the HXU DS1
Interface in Service” on page 35 and “Placing the HXU DS3
Interface in Service” on page 36.