Cisco Catalyst WS-C2924-XL Hardware Installation Manual page 96

Diagnosing Problems
Table 3-2 Common Problems and Their Solutions (continued)
Symptom
LRE link goes down when
telephone is taken
off-hook, placed on-hook,
rings, or dials.
Catalyst 2900 Series XL Hardware Installation Guide
3-8
Possible Cause
Unfiltered telephone tap on LRE line.
Chapter 3 Troubleshooting
Resolution
Connect telephone cable into
•
PHONE socket on LRE CPE
device.
Terminate additional
•
telephone lines with
microfilters. For more
information about
microfilters, contact your
Cisco sales representative.
78-6461-04