'sip:123@[2620:0:2ef0:7070:250:60ff:fe03:32b7]',
'sip:[2620:0:2ef0:7070:250:60ff:fe03:32b7]',
'sip:[2620:0:2ef0:7070:250:60ff:fe03:32b7]:5060',
Python Regular Expression for SIP URI variables? [SOLVED]