SIP2.0 401 Unauthorized response when dial 7777 to Asterisk

sip 77777777 is hard coded into the software. My workaround is an outbound rule to 'fix' 777 dialled from a phone to 7777 down a specific SIP trunk.sip 7777 RACUNTOTO PP Sumber Bungur Pengaruh Sistem Pengapian Capasitive Discharge nition ... UDINTOGEL 505 > Бережіть від дітей і - Mandy Maker