Hi. I am a bit confused but as I understand pjsip doesn't support telephone-subscriber format in sip uri. userinfo <https://www.tech-invite.com/fo-abnf/tinv-fo-abnf-sipuriui.html#userinfo> = ( user <https://www.tech-invite.com/fo-abnf/tinv-fo-abnf-sipuriui.html#user> / telephone‑subscriber <https://www.tech-invite.com/fo-abnf/tinv-fo-abnf-sipuritu.html#telephone-subscriber> ) [ ":" password <https://www.tech-invite.com/fo-abnf/tinv-fo-abnf-sipuriui.html#password> ] "@" telephone-subscriber <https://www.tech-invite.com/fo-abnf/tinv-fo-abnf-sipuritu.html#telephone-subscriber> = global‑number <https://www.tech-invite.com/fo-abnf/tinv-fo-abnf-sipuritu.html#global-number> / local‑number <https://www.tech-invite.com/fo-abnf/tinv-fo-abnf-sipuritu.html#local-number> global-number <https://www.tech-invite.com/fo-abnf/tinv-fo-abnf-sipuritu.html#global-number> = global‑number‑digits <https://www.tech-invite.com/fo-abnf/tinv-fo-abnf-sipuritu.html#global-number-digits> *parameter <https://www.tech-invite.com/fo-abnf/tinv-fo-abnf-sipuritu.html#par> parameter <https://www.tech-invite.com/fo-abnf/tinv-fo-abnf-sipuritu.html#parameter> = ";" pname <https://www.tech-invite.com/fo-abnf/tinv-fo-abnf-sipuritu.html#pname> [ "=" pvalue <https://www.tech-invite.com/fo-abnf/tinv-fo-abnf-sipuritu.html#pvalue> ] And I can't parse the next request uri: INVITE sip:service;npdi;rn=+01234567890@ip:port SIP/2.0 Are there any ideas instead of parsing this line by hand? Thank you