philologist's techblog

RFCs:

RFC 2833, RTP Payload for DTMF Digits, Telephony Tones and Telephony Signals

RFC 2916, E.164 number and DNS

RFC 3261, SIP: Session Initiation Protocol

RFC 7201, Options for Securing RTP Sessions

RFC 8599, Push Notification with the Session Initiation Protocol (SIP)

Blogs, websites:

https://opensips-blog.yooxy.ru/ Pavel Eremin’s blog about OpenSIPS, Kamailio, VoIP

https://www.packetizer.com/voip/

https://openbsdrouterguide.net/

https://romanzolotarev.com/

https://why-openbsd.rocks/fact/

https://www.romanzolotarev.com/

https://dataswamp.org/~solene/2024-02-20-rarely-known-openbsd-features.html

https://www.unixsheikh.com/

https://www.vocal.com/

https://github.com/OpenSIPS/opensips/issues/1288#issuecomment-367293070

https://docs.huihoo.com/opensips/tutorials/uac/ar01s06.html

https://telecom.altanai.com/

https://kb.smartvox.co.uk/