I have these items (9k, 400, pap2t) working together, however, when calling a spa voip phone (spa942) from a phone attached to the pap2t, I am unable to end up in voicemail if the user at the spa942 does not answer. From other SPA phones it is not a problem. I know there are issues with generic SIP clients getting into voicemail, but does that include the scenario I describe above? Do any of the spaxxx ATA's other than the pap2 have the ability to get forwarded into VM if an extension does not answer? Thanks.
Currently ATAs are not supported with regards of SPA400 VM...we are currently evaluating the feasibility to support ATAs on SPA9000 Voice System with SPA400 Voicemail. Please stay tuned.