AudioCodes Mediant 8000 - Page 842

Installation & Operation Manual 842 Document # LTRT-92224
Mediant 8000
Problem Possible Cause(s) Actions to Take See:
A problem with SC
board's SA/RTM
Make sure that the SA/RTM
modules of both SC boards are
inserted properly in the rear slots
and that their latches are firmly
closed.
Perform Lock action on another
Media Gateway board. If the
problem occurs on it too – reset the
SA/RTM module by extracting it
from the chassis and re-inserting it
back.
'SA/RTM
Synchronization
and Alarm Rear
Transition
Module' on page
69
Problems with Voice Quality
G.711 voice quality
is bad (clicks)
Wrong codec
definition in the
remote Media
Gateway
In the remote Media Gateway,
check that packetization time period
(Ptime) is 20 msec and the correct
µ-law or A-law compression is in
use.
'Configuring the
Voice Settings'
on page 527
Silence Suppression
is not compatible with
the remote Media
Gateway (when
remote Media
Gateway is not an
AudioCodes Media
Gateway)
Disable Silence Suppression and
check if quality is improved.
'Configuring the
Voice Settings'
on page 527
No voice There is no common
codec with the
remote Media
Gateway
Change voice codec definitions on
the SoftSwitch.
See
documentation
provided by the
relevant
Softswitch
vendor.
Echo on the PSTN
terminations
Clock
Synchronization
Check and validate the clock
synchronization of the PSTN
network and update the Media
Gateway's configuration.
'Configuring TDM
Synchronization'
on page 516