admin said:To download a build with music on hold during transfer from DR:
http://www.3cx.com/downloads/3CXPhoneSystem5_3762.exe
Gicleemedia - not sure which oustanding VOIP provider issues you are referring to - we have tested against all our supported providers and it works well. However, we have made additional documentation on how to configure it with unsupported VOIP providers. Basically, if you are getting source identification errors, review this FAQ how to fix it:
http://www.3cx.com/support/source-identification-err-2.html
Hope that helps!
Founded in 2005, when VoIP was an emerging technology, 3CX has gone on to establish itself as a global leader in business communications.