[Asterisk-Users] Please..... need some help

[Jay Milk]

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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