Hi guys !
I’m not sure if SIP trunking will work with a Telco which has SIP-I. The scenario meant is that asterisk will only accept incoming calls ,that is a subscriber of Telco can only make calls towards Asterisk and not the reverse. Maybe the figure below explain better the scenario :
telco user -->ISUP— Telco Exchange ----SIP-I —Asterisk —> SIP phone
It is possible that SIP protocol that Asterisk has can inter-work with SIP-I of that Telco ?
Thanks in advance for your thoughts and suggestions !