SIP/2.0 401 Unauthorized

Все работало, но в один прекрасный день перестала работать регистрация. Астериск за натом.

sip.conf

[general]

nat=yes

register=74112401887@mmas.com:xxxxxx@80.73.85.140/74112401887

Ниже tcpdump

14:25:43.854332 IP (tos 0x0, ttl 64, id 29432, offset 0, flags [none], proto UDP (17), length 731)

192.168.137.102.5060 > 80.73.85.140.5060: SIP, length: 703

    REGISTER sip:mmas.com SIP/2.0

    Via: SIP/2.0/UDP 46.48.181.59:5060;branch=z9hG4bK54e29043;rport

    From: <sip:74112401877@mmas.com>;tag=as60773222

    To: <sip:74112401877@mmas.com>

    Call-ID: 7f63988f7c0e8b153d1953b30a54465e@192.168.0.102

    CSeq: 290 REGISTER

    User-Agent: Asterik PBX

    Max-Forwards: 70

    Authorization: Digest username="74112401877@mmas.com", realm="mmas.com",

algorithm=MD5, uri="sip:mmas.com", nonce="506291bdcb951b00a03b1e8022340f6df136f17dfe7001c5c40f4b2e498c0998d4bcbfcbd20496948143b264dd09f2bb0e1c7ef5", response="ad16ed3c4909db5579c69841034f8f53", qop=auth, cnonce="6c7982f6", nc=00000002

    Expires: 120

    Contact: <sip:74112401887@46.48.181.59>

    Event: registration

    Content-Length: 0

14:25:43.943965 IP (tos 0xc0, ttl 124, id 0, offset 0, flags [none], proto UDP (17), length 598)

80.73.85.140.5060 > 192.168.137.102.5060: SIP, length: 570

    SIP/2.0 401 Unauthorized

    Via: SIP/2.0/UDP 46.48.181.59:5060;received=10.161.66.7;branch=z9hG4bK54e29043;

rport=5060

    From: <sip:74112401877@mmas.com>;tag=as60773222

    To: <sip:74112401877@mmas.com>;tag=b72e12N26506283c1-4bea

    Call-ID: 7f63988f7c0e8b153d1953b30a54465e@192.168.0.102

    CSeq: 290 REGISTER

    Expires: 300

    User-Agent: Asterik PBX

    WWW-Authenticate: digest realm="mmas.com", qop="auth", nonce="506291d1ed374d7dc89334fc9df6c6173866aae7644fee5c290da3a4c63b35566db98b629cc2d01c77302425a68638168f987ab1", opaque="", stale=false, algorithm=md5

    Content-Length: 0

14:25:43.944049 IP (tos 0x0, ttl 64, id 29433, offset 0, flags [none], proto UDP (17), length 731)

192.168.137.102.5060 > 80.73.85.140.5060: SIP, length: 703

    REGISTER sip:mmas.com SIP/2.0

    Via: SIP/2.0/UDP 46.48.181.59:5060;branch=z9hG4bK4e816331;rport

    From: <sip:74112401877@mmas.com>;tag=as2a50c69c

    To: <sip:74112401877@mmas.com>

    Call-ID: 7f63988f7c0e8b153d1953b30a54465e@192.168.0.102

    CSeq: 291 REGISTER

    User-Agent: Asterik PBX

    Max-Forwards: 70

    Authorization: Digest username="74112401877@mmas.com", realm="mmas.com", algorithm=MD5, uri="sip:mmas.com", nonce="506291d1ed374d7dc89334fc9df6c6173866aae7644fee5c290da3a4c63b35566db98b629cc2d01c77302425a68638168f987ab1", response="f963aefc93907226cd7170061a390a09", qop=auth, cnonce="5d42afe9", nc=00000001

    Expires: 120

    Contact: <sip:74112401887@46.48.181.59>

    Event: registration

    Content-Length: 0

14:25:44.024793 IP (tos 0xc0, ttl 124, id 0, offset 0, flags [none], proto UDP (17), length 598)

80.73.85.140.5060 > 192.168.137.102.5060: SIP, length: 570

    SIP/2.0 401 Unauthorized

    Via: SIP/2.0/UDP 46.48.181.59:5060;received=10.161.66.7;branch=z9hG4bK4e816331;

rport=5060

    From: <sip:74112401877@mmas.com>;tag=as2a50c69c

    To: <sip:74112401877@mmas.com>;tag=b72e12N26506283c1-7d8d

    Call-ID: 7f63988f7c0e8b153d1953b30a54465e@192.168.0.102

    CSeq: 291 REGISTER

    Expires: 300

    User-Agent: Asterik PBX

    WWW-Authenticate: digest realm="mmas.com", qop="auth", nonce="506291d1789811d6edc9dd0011a8a9fa599fd811db9bd086889b9cf92af943931d7be5f6acf344a4d6e1e4c8cef37386072f03e4", opaque="", stale=false, algorithm=md5

    Content-Length: 0