I have tried to place SIP calls to other Gizmoproject (sipphone) members using the new N800 and its new Gizmo version with bad success: The Audio I can hear back is only garbage.

If I call to echo test the audio is fine. If I call to a landline phone the audio is fine.

The problem only exist when I make SIP calls to my friends who have HW SIP phones: Grandstream family Budgetone 100, Handytone 486, GXP-2000. They all give same results... If I call their phone IPKall assigned landline number, the audio is fine again...

If I call to the same numbers and HW devices using the PC Windows client of Gizmo the audio is fine.

I have tried this now at least on three different physical networks: One in Texas, one in JFK airport, and one in a hotel room in northern europe... makes no difference. (This is to rule out any router caused issues?)

So, I have figured that the audio codec the Grandstream HW phones use (ALAW, ULAW) are not handled well with N800 Gizmo client. However, I *think* the 770 version on 770 did work fine on these situations? I tried to install 770 client on N800 but it does not work at all: I could not hear voice at all when calling Echo test, for example.

Anybody any ideas?