- Parameter "morsegerman" for option "local-tones" will generate morse-a dialtone (pre-1979).
- Fixed german tone pattern timings according to 1TR110-1 Chapter 8
* Busy tone: 480ms on / 480ms off
* Hangup tone: 480ms on / 480ms off
* Old german ringing: 1000ms on / 4000ms off
* Old german busy/hangup tone: 125ms on / 475ms off