Resetting Or Restoring The Conference Station; Performing A Basic Reset - Cisco 7937G - Unified IP Conference Station VoIP Phone Administration Manual

Chapter 9 Troubleshooting and Maintenance
Table 9-1
Summary
Poor voice quality when calling
digital cell conference stations using
the G.729 codec (protocol)
Caution
Prolonged broadcast storms cause
conference stations to reset, or be
unable to make or answer a call
Sound sample mismatch between the
conference station and another
device

Resetting or Restoring the Conference Station

There are two methods for resetting or restoring the conference station:
•
•

Performing a Basic Reset

Performing a basic reset of a conference station provides a way to recover if the conference station
experiences an error. A basic reset resets or restores various configuration and security settings.
Table 9-2
these operations any time after the conference station has started up. Choose the operation that is
appropriate for your situation.
Cisco Unified IP Conference Station 7937G Administration Guide for Cisco Unified Communications Manager 6.0
OL-11560-01 Rev. B0
Cisco Unified IP Conference Station 7937G Troubleshooting (continued)
Using a cell, mobile, or
GSM conference station,
or two-way radio in close
proximity to a Cisco
Unified IP Conference
Station 7937G might
cause interference. For
more information, refer to
the manufacturer's
documentation of the
interfering device.
Performing a Basic Reset, page 9-11
Performing a Factory Reset, page 9-12
describes the ways to perform a basic reset. You can reset a conference station with any of
Resetting or Restoring the Conference Station
Explanation
In Cisco Unified Communications Manager, you can configure
the network to use the G.729 protocol (the default is G.711).
When using G.729, calls between a Cisco Unified IP
Conference Station 7937G and a digital cellular conference
station will have poor voice quality. Use G.729 only when
absolutely necessary.
For more information, refer to the Cisco Unified
Communications Manager application online help.
A prolonged Layer 2 broadcast storm (lasting several minutes)
on the voice VLAN may cause conference stations to reset, lose
an active call, or be unable to initiate or answer a call.
Conference stations may not come up until a broadcast storm
ends.
The RxSize and the TxSize statistics show the size of the voice
packets that are being used in a conversation between this
conference station and the other device. The values of these
statistics should match.
See the "Call Statistics Screen" section on page 7-4
information about displaying these statistics.
for
9-11