Hi Andreas, this is really very helpful, thank you so much. I was able to understand how some of the options work from looking at the source code, but I still feel I lack some basic knowledge of how the different Osmo-CC components interact, and this documentation should help close those gaps quickly. For instance, using osmo-cc-sip-endpoint with a SipGate account and osmocom-analog's C-Netz module, I was able to make incoming calls from the PSTN to mobile C-Netz devices registered against osmocom-analog. I was not able to make outgoing calls, though, as I seem to be unable to make either osmocom-analog understand it needs to route the outbound call to osmo-cc-sip-endpoint, or make osmo-cc-sip-endpoint understand it must seize the call attempt and connect the call through the SIP provider. Also, I was unable to make the speaking-clock Zeitansage example work with osmocom-analog so I could call 1191 from the C-Netz mobiles registered against osmocom-analog, and I assume this is due to my lack of understanding on how to ensure calls to 1191 are properly routed from osmocom-analog to the Zeitansage module. Since the Zeitansage, in effect, is just another endpoint, I should be able to gain helpful insight from the documentation in that respect as well. Also, the OsmoCC-Router looks quite powerful and should allow for very flexible routing between a multitude of endpoints, based on routing scripts, so a documentation on this, as foreseen here for future additions, will also be extremely helpful. Thank you very much for this work. BR, Markus

Hi Harald, On 22.03.21 19:04, Harald Welte wrote: Thanks for that. I pushed the 'alsa' endpoint. I just added two documents. One is the unfinished protocol specification and one the unfinished user's guide. For one that wants to try endpoints, pull latest version from their git repositories. Best regards, Andreas