@MikaKpk So basically you DIY one if those cheap "#GSMoverIP" boxes?
- Cuz yeah those exist, incl. #4G / #LTE variants and #FiitzBox cersions that support #ADSL|2 Annex B should be able to use that analog phone line part as well.
Unless you need like #ISDN and other features, something like a Tenda 4G06 is likely gonna work fine...





