C-12 – Vertical Communications TeleVantage 7.5 User Manual
Page 148
C-12
1.
Check that the SCbus cable that connects your ISA boards is installed correctly and
reseat it if necessary. See “Installing Intel Dialogic boards” on page 6-6 for more
information.
2.
If the SCbus cable is installed correctly, the problem may be IRQ-related. Do the
following:
Q
In BIOS, reserve an IRQ for use by legacy ISA devices. You can usually use IRQ 5.
Q
Check the IRQs assigned to the Intel Dialogic boards, and resolve any conflicts that
you find. See “Verifying that Intel Dialogic is using a free IRQ and base memory
address” on page 7-16.
3.
Restart the Intel Dialogic drivers. If the problem recurs, contact your technical support
representative.
All phones ring when Intel Dialogic drivers are started
If all the phones ring for approximately 30-60 seconds when the Intel Dialogic drivers are
started, the MSI boards are not getting power from the MSI power supply. Check the power
supply, the fuse, and so forth. You may need a different power supply.
Echo heard on IP phones on calls that came in on D/120JCT-LS analog
trunk board
IP phone users may hear an echo when listening to VoIP calls that originated on analog trunks
that are outside of telephone company specifications, and which came into the TeleVantage
Server via a D/120JCT-LS analog trunk board. The problem may also occur on calls that came
in on a D/120JCT-LS board and were routed to another TeleVantage Server via an IP Gateway.
Using the Rev 2 version of this board (model number D/120JCT-LSR2) can reduce this VoIP
echo that originates on the analog trunks.
The following procedure can help reduce the echo.
Note:
This fix applies only to the rev 2 version of the D/120JCT-LS board. Rev 2 boards are
identified in the DCM main dialog box as
D/120JCT-LS-Rev 2
. (Rev 1 boards are identified as
D/120JCT-LS
.)
1.
Shut down the TeleVantage Server if it is running.
2.
Stop the Intel Dialogic drivers if they are running.
3.
Start the Intel Dialogic Configuration Manager (DCM.)
4.
In the DCM main dialog box, right click the first D/120JCT-LS board, and then select
Configure Device
.
5.
On the Misc tab, select the
ParameterFile
parameter and then select
us_120jr2_complex.prm
from the
Value
drop-down list.
6.
Click
OK
to save your changes.