My voip calls to 101 always cut off 6m 36s to 6m 37s

[ppppenguin]

At least one VOIP provider doesn't even enable 101 at all!
https://help.telappliant.com/en_GB/voipt...number-101

If you have a mobile and adequate signal then call 101 from there. Many mobiles can also do calling via wifi if the network signal isn't adequate.