AT&T SB67020 User Manual page 155

Symptom
You cannot retrieve
parked calls.
You hear static, sudden
silences, gaps in
speech, or garbled
speech.
A call is forwarded or
transferred to an
outside telephone
number and the call is
disconnected.
Troubleshooting
Synapse SB67020 Deskset User's Guide
Probable Cause
The first digit of an extension
number matches the first digit
of parked calls.
You may be experiencing
network problems.
Telephone line to telephone
line call times have been
restricted. Calls that are
forwarded or transferred to an
outside phone number use two
PSTN lines or voice channels
for the duration of the call. To
avoid tying up two outside
lines, these calls are on a timer.
Corrective Action
Your system administrator may have to correct your Dial Plan

settings. Do not have extension numbers whose first digits
match the park extension prefix.
Your LAN administrator should ensure the following minimum

guidelines are met:
A switched network topology is recommended (using

standard 10/100 Ethernet switches that carry traffic at a
nominal rate of 100 Mbit/s).
The office network infrastructure should use Cat.-5

wiring.
Do not connect a network server PC to the PC port on the

Deskset.
Make sure the network cable is solidly plugged in. If you tug

on the cable, the plug should remain inserted.
Ask your system administrator to reset the Timer for

Forwarded and Transferred Outside Calls.
155
Calls Generally