Default What's the options for enabling VoIP

Hi,

I am using the Dopod WM6 ROM with MajikVOIP.cab, VOIP Drivers.cab and SetupVoIP_v0.3.

VoIP works OK but with bursts of crackling from the loudspeaker so are there any other alternatives to the above for getting VoIP working that I could try?

Also, are there any VoIP add-ons that allow the setup and quick switching between multiple SIP accounts?

For what it's worth, I have also tried the beta version of SJPhone's VoIP software for WM5 and it works very well, but it's obviously not as tightly integrated as using add-ons to the core OS.

Thanks
Sony Xperia Z - JB4.1.2, rooted
Samsung Galaxy Note GT-N7000. ICS 4.04. Speedmod kernel K3-13, rooted.
Motorola Xoom, JB4.1.2, rooted.
HTC Desire, CM9, rooted.