Hello,
If you map your users with usernames and a PSTN alias number, you can
reach SIP clients from PSTN.
However, is there a smart way of rewriting the Contact address for
outgoing PSTN requests?
Usually the PSTN gateway receives the username as From/Contact, and the
gateway will use probably the first number in its routing table or a
number defined by the Telco for calls without a Calling number entry.
Br,
hw