Syn248 Installation and Configuration Guide
Troubleshooting
88
Resolving General Audio Issues
Check the following if you hear static, sudden silences, gaps in speech, echoes, distorted
speech, or garbled speech.
To resolve general audio issues:
You may be experiencing network problems.
Your LAN administrator should ensure the following minimum guidelines are met:
A switched network topology, which requires attaching network components
to switches rather than hubs, is recommended. The network should use
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.
If you have Digital Subscriber Line (DSL) service, you may be experiencing telephone line
problems.
Make sure you have a DSL filter plugged in between each DSL line and the
telephone wall jack.
You may need a higher quality DSL filter than you are currently using. You can
also try plugging in multiple DSL filters in sequence to decrease DSL interference.
Move the DSL line to the lowest priority line, which is Line 4 on the highest
numbered Gateway, as indicated on the Gateway display.
The Gateway might not have recognized a new outside telephone line, so line calibration
— which allows the Gateway to adjust its performance depending on the phone lines’
characteristics — did not occur. After unplugging the telephone line, wait for 15 to 30
seconds before plugging the telephone line back into the Gateway.
Reintroducing a Deskset Into the System
If there are no more than 24 Desksets in the system and a Deskset screen displays
Synch
Failed
or
Synchronizing
for a long time, you may need to remove the Deskset from the
system and reintroduce it. This problem may have been caused by a network disruption,
the Deskset having been part of a different network, or by an AC power failure.
To reintroduce a Deskset into the system:
1. Ensure that the Deskset is connected to the same LAN subnet as other system
Gateways and Desksets. Ensure that the PC you will use to access the WebUI is either
on the same subnet as Syn248, or that the PC subnet can communicate with the
Syn248 subnet.
Devices on the same subnet generally share the first three octets of
their IP addresses. If the subnets are different, contact your installer.
2. If you want to retain the programming for a problem Deskset, back up the Deskset.
a. Log on to the WebUI as administrator on the problem Deskset. Click
Device
Management
, then
Back up/Restore
, and then
Extension Settings
in the
navigation menu at left.