IPO v9 / OneX on iOS / low volume on calls from IP to ISDN

[damiri]

Hi,

I am interested if we can somehow fix on IPO One-X client voice volume on receiving party. What every I do from my phone, it is always low and people can barely hear what I am saying.

Configuration looks like this:

One-X client on iPhone --> Avaya SBC as VM --> IPO500v2 --> ISDN

However, One-X client on iPhone --> Avaya SBC as VM --> IPO500v2 --> another extension on this IPO
works just fine.

So issue is somewhere in conversion from IP to ISDN.

Any suggestions?

Thank you.