twinkle-console binary package in Ubuntu Focal arm64

 Twinkle is a soft-phone for making telephone calls over an IP network
 using the SIP protocol. You can use it for direct IP phone to IP phone
 communication or in a network using a SIP proxy to route your calls.
 Notable features include multiple active identities, call transfer,
 call rejection, 2 simultaneous calls and 3-way conference calls.
 .
 This package contains the console interface. Note that the console
 interface provides a reduced set of features; in particular, the
 graphical interface is needed to create the configuration files.

Source package