I use a Telekom Router Speedport smart. The router has IP telefony and is my gateway to the PSTN. I have configured an asterisk system with some internal softphones. The internal calls work based on my pjsip and the dialplan. I want to route calls from internal softphones to my speedport smart and thus to the PSTN. I have configured an IP telephone in the speedport smart. How can I connect my asterisk to the speedport smart as IP telephone. I thought to define an endpoint which registers at the speedport smart as IP phone. All internal calls to this endpoint then would be forwarded to the speedport router and from there to the PSTN.
How can I define an endpoint which registers outbound at the speedport router ? Is an endpoint the correct entity ? Or need I some kind of outbound SIP Trunk to be defined to the router