i have an installation that i am using fritzbox 7170 with an ISDN and 3 numbers in total. each number is in one of the analogue ports of the router. the requirements has changed and in the office we need 4 numbers in total, fax to email, IVR, and many functions that i can offer from asterisk. my question is if there is a way to get the isdn to asterisk by sip trunk and how to configure it. i would like to have only one registration between asterisk and fritzbox. all numbers to go through this registration.
it will save me a couple hundreds of euros for an ISDN card for the asterisk
it will save me a couple hundreds of euros for an ISDN card for the asterisk
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