Erros ocorrendo na conexão com a sangiovanne

<--- SIP read from UDP:200.150.10.99:5060 --->
SIP/2.0 401 Unauthorized
Via: SIP/2.0/UDP 192.168.254.7:5060;branch=z9hG4bK533e44c3;received=189.83.0.191;rport=5060
From: "Diretoria" <sip:1050@200.150.10.99>;tag=as5955f7a3
To: <sip:1001@200.150.10.99>;tag=as19740f3a
Call-ID: 1e5591af375b897817589fc76591cda9@200.150.10.99
CSeq: 102 INVITE
Server: FPBX-2.11.0(11.7.0)
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY, INFO, PUBLISH
Supported: replaces, timer
WWW-Authenticate: Digest algorithm=MD5, realm="asterisk", nonce="2d03f8ef"
Content-Length: 0