[moyta]

This is what I've observed on T-Mobile, Centurylink and Comcast over the past month across two phones, it does allow me to backdate messages and send them later at least, so not a total loss.

In regards to federation for Signal, what are you looking for in terms of technical competence and skills? I'm already intimately familiar with running servers, VOIP, SMS delivery, etc so I've got a good grip on things, and I'd like to tie in our existing PBXes with Signal whereby ZRTP calls go straight to endpoints, perhaps we can force the issue with Grandstream and get them to add ZRTP support on device for their GXP2140 & GXP2170 phones.