Mute outbound call syndrome; Betamax issue?

[jozef]

Yesterday I called my VOIP-friend and get MOCS. Call was Voxalot -> Voxalot.
Next call to him was thru FreeCall (Betamax) provider. Voxalot -> Freecall 883510004xxxxxx -> Voxalot. Call was disconnected after 30 sec.
I try one more time thru Actio provider. Voxalot -> Actio -> Actio. The call connected and we talked 50 minutes.

Is it Voxalot issue?

Originally Posted by tatjam

... As I'm now recalling, one key factor leading me to lean toward that conclusion was the fact that I sometimes get MOCS when I'm calling another voxalot user: in those cases, there can be no question of poor interaction between voxalot and a VSP, since it all goes through voxalot. ...

I would suggest:
1. Try without registration on line 2 with justvoip.
2.1. Try with Sipsorcery or PBXes instead of Voxalot. Justvoip as provider in Sipsorcery/PBXes. Line 2 with direct registration with justvoip.
2.2. Try with Sipsorcery or PBXes instead of Voxalot. Justvoip as provider in Sipsorcery/PBXes. Line 2 without registration with justvoip.
3.1 Try with Sipsorcery or PBXes. Voxalot as provider in Sipsorcery/PBXes and justvoip as provider in Voxalot. Line 2 with direct registration with justvoip.
3.2 Try with Sipsorcery or PBXes. Voxalot as provider in Sipsorcery/PBXes and justvoip as provider in Voxalot. Line 2 without registration with justvoip.

Thanks,
Józef