I thought upgrading our 403 from 2.0 to 3.0 might solve this problem.
When I try to create a conference call between three internal phones - pressing the conference button results in white noise.
I have ip403 ver 3.0 DT 16 all up to date firmware but problem existed in 2.1(27)when was loaded...
I work in an IT office where the boss wants to go with the upgrade to version 3.0 - mobile office is pushing it and SIPs enablement . Looking at what's new in 3.0 I don't see any mention of Sips so far.
The dealer was waxing lyrical about it.
I think I must of mis-understood.
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