This one is not a new feature but a bug fix. SwyxWare trunks use profiles to adapt to specific SIP provider or ISDN lines. The predefined profiles can be adapted by adding your own special number replacement rules:

These rules always work from the beginning of a number,e.g.

+* –> 00*

changes numbers like +4923147770, which SwyxWare uses internally, to 004923147770.

Before v6.12 a rule like

* –> 123456

did not manipulate an empty number string. That is no big deal most of the time, because as soon as one digit is present, the rule is applied. But there’s at least one scenario where this bug is bad. Some ISDN device or analog/IP-Adapter do not send a calling party number. A rule like * –> 123 would help by just replacing the empty calling number with 123. With SwyxWare v6.12 this works now.