This doesn't appear to be asterisk related -- you may want to contact
your other vendors for product support (Panasonic, Multitech or Micronet).
Looks like this is a kludgey setup you could have had cheaper using
asterisk, however.
housi mueller wrote:
Sorry if I post in this forum, this may be not the right one, but I
hope to find in here some experts which could help me out.
I have in one location 8 extensions from a Panasonic PBX “KX-TD1232“
connected to FXO Ports on an MultiVoIP Gateway from Multitech.
On the other location I have 8 SP5100 IP-Phones from Micronet as
remote extensions.
Between the locations I have a VPN.
If I call from an IP-Phone to a local extension on the Panasonic PBX
or if a local extension from the Panasonic PBX calls to an remote
IP-Phone, the voice quality is o.k.
If I receive a call from the PSTN to a remote IP-Phone or if a remote
IP Phone calls someone over the PSTN, the person on the PSTN can’t
almost hear anything. The voice volume ist to low.
I tried with different Codec’s with Echo cancellation or without, with
silence suppression or without, on the Gateway as with the IP-Phones
etc. nothing helps!
I contacted a company specialised in Panasonic PBX and with them we
changed the EPROM on the PBX which increases the volume between trunk
lines, but with no results.
Now I have the Output Gain on the IP-Phones set to the maximum and on
the MultiVoIP Gateway I increased the Output Gain 7 db.
The Person on the PSTN can hear now better but with calls between
local extensions and remote IP-Phones, the volume is now too loud and
with noise and echo.
Why everything works well with calls made from local PBX extensions to
remote IP-Phones but it does not work with calls from or to remote
IP-Phones over the PSTN.
Where could be the problem of this issue?
Thanks for helping in advance...
Housi Mueller
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