I have a SRP521 router used mainly for security (VPN access).
This router has a 2 FXO slots and one FXS slot.
Documentation shows how phone device connected can make calls through SIP server, and this work
I would like to make VOIP calls from the outside (softphones) that will go through my office line
Is there a way to route calls to the phone line (FXS) whether native SIP in the SRP500 or with a SIP server witin my private network
the use case is to be able to make calls while traveling abroad through my land line, since calls are free
thanks
Elsa.W