So far I always have two physical phones camped on a physical BTS to test voice. Speak into each handset and hear if the other plays it back. It involves a lot of plugging and SIM card and android settings / flight mode.
On Wed, Dec 07, 2022 at 11:57:08AM -0600, Keith wrote: > Maybe you want to try to keep it in osmo-* land or somehow you don't like > SIP.. (and by extension, IMS?) Which is why for you, forking and hacking on > LCR is fine, and using osmo-gapk to do a convoluted RTP loopback is fine, > but the really simple solution with SEMS is "overkill" :-) It would be great to have a simple echo service. Adding osmo-sip-connector and kamailio to osmo-msc is fairly easy, we have example config in osmo-dev.git. But I don't know how to do an actual echo with a delay of two seconds. I also find basically all of the PBX config daunting and near impossible to understand. Maybe someone who knows which PBX provides an echo service can write up a wiki page on osmocom.org to describe it? ~N
