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$ sudo apt-get install ser
...
Starting ser: serListening on 
             udp: 127.0.0.1 [127.0.0.1]:5060
             udp: 61.100.220.34 [61.100.220.34]:5060
             udp: 192.168.0.1 [192.168.0.1]:5060
             tcp: 127.0.0.1 [127.0.0.1]:5060
             tcp: 61.100.220.34 [61.100.220.34]:5060
             tcp: 192.168.0.1 [192.168.0.1]:5060
Aliases: 
             tcp: localhost:5060
             udp: localhost:5060