我正在使用sipml5通过wss连接到freepbx星号服务器，并尝试拨打电话。它正在响铃，然后呼叫被拒绝，错误503服务不可用。我该怎么解决？。
我尝试使用Jitsi和Zoiper拨打电话，但该电话有效，但是当我在浏览器上使用sipml5时，该电话不起作用。
这是我的日志：
SEND: INVITE sip:0101221@caller.local SIP/2.0
Via: SIP/2.0/WSS df7jal23ls0d.invalid;branch=z9hG4bK8TyhVFPP9VlUgnOnmmwyJcgHsUIDqiM0;rport
From: "Vixar"<sip:0101222@10.0.19.245>;tag=lkOnhyQZVIEVxiVQdyTF
To: <sip:0101221@caller.local>
Contact: "Vixar"<sips:0101222@df7jal23ls0d.invalid;rtcweb-breaker=no<code>;</code>click2call=no;transport=wss>;+g.oma.sip-im;language="en,fr"
Call-ID: 7de7a6cc-6abd-7f6c-7ebf-38d69fb86170
CSeq: 16977 INVITE
Content-Type: application/sdp
Content-Length: 2836
Max-Forwards: 70
Authorization: Digest username="0101222",realm="asterisk",nonce="1562151858/e0b61d90c2d0820fda839ad60fc00778",uri="sip:0101221@caller.local",response="1af5ff9576f761d207bb0792e72eb7d0",algorithm=md5,cnonce="caf28ff777242e51dfedf13e8abe92ea",opaque="7c15aecd6737cbd3",qop=auth,nc=00000001
User-Agent: IM-client/OMA1.0 sipML5-v1.2016.03.04
Organization: Doubango Telecom
v=0
o=- 3102520056178704400 2 IN IP4 127.0.0.1
s=Doubango Telecom - chrome
t=0 0
a=group:BUNDLE 0
a=msid-semantic: WMS RMRSFqoAuPsNU92pfrY3W0lC8WYBEvuzN5pU
m=audio 58632 UDP/TLS/RTP/SAVPF 111 103 104 9 0 8 106 105 13 110 112 113 126
c=IN IP4 172.19.90.209
a=rtcp:58635 IN IP4 172.19.90.209
a=candidate:403261254 1 udp 2122260223 172.19.90.209 58632 typ host generation 0 network-id 1
a=candidate:2309542727 1 udp 2122194687 192.168.214.2 58633 typ host generation 0 network-id 2
a=candidate:2613338743 1 udp 2122129151 10.0.19.224 58634 typ host generation 0 network-id 3
a=candidate:403261254 2 udp 2122260222 172.19.90.209 58635 typ host generation 0 network-id 1
a=candidate:2309542727 2 udp 2122194686 192.168.214.2 58636 typ host generation 0 network-id 2
a=candidate:2613338743 2 udp 2122129150 10.0.19.224 58637 typ host generation 0 network-id 3
a=candidate:1451932598 1 tcp 1518280447 172.19.90.209 9 typ host tcptype active generation 0 network-id 1
a=candidate:3341496247 1 tcp 1518214911 192.168.214.2 9 typ host tcptype active generation 0 network-id 2
a=candidate:3578240647 1 tcp 1518149375 10.0.19.224 9 typ host tcptype active generation 0 network-id 3
a=candidate:1451932598 2 tcp 1518280446 172.19.90.209 9 typ host tcptype active generation 0 network-id 1
a=candidate:3341496247 2 tcp 1518214910 192.168.214.2 9 typ host tcptype active generation 0 network-id 2
a=candidate:3578240647 2 tcp 1518149374 10.0.19.224 9 typ host tcptype active generation 0 network-id 3
a=ice-ufrag:9IfN
a=ice-pwd:dywr02eFMYml0EPRbbNXdE8Z
a=ice-options:trickle
a=fingerprint:sha-256 05:6E:B9:18:A2:B4:47:0A:4D:64:40:DB:CC:82:12:C1:ED:C2:70:F0:BB:34:D8:D3:53:D9:86:DB:FC:B2:E2:00
a=setup:actpass...
tsk_utils.js?svn=252:116 recv=SIP/2.0 100 Trying
Via: SIP/2.0/WSS df7jal23ls0d.invalid;rport=58552;received=10.0.19.224;branch=z9hG4bK8TyhVFPP9VlUgnOnmmwyJcgHsUIDqiM0
From: "Vixar"<sip:0101222@10.0.19.245>;tag=lkOnhyQZVIEVxiVQdyTF
To: <sip:0101221@caller.local>
Call-ID: 7de7a6cc-6abd-7f6c-7ebf-38d69fb86170
CSeq: 16977 INVITE
Content-Length: 0
Server: FPBX-14.0.3.1(15.4.0)
tsk_utils.js?svn=252:116 recv=SIP/2.0 180 Ringing
Via: SIP/2.0/WSS df7jal23ls0d.invalid;rport=58552;received=10.0.19.224;branch=z9hG4bK8TyhVFPP9VlUgnOnmmwyJcgHsUIDqiM0
From: "Vixar"<sip:0101222@10.0.19.245>;tag=lkOnhyQZVIEVxiVQdyTF
To: <sip:0101221@caller.local>;tag=a7d6652a-252e-4abf-beed-0759d9c4edb0
Contact: <sips:10.0.19.245:8089;transport=ws>
Call-ID: 7de7a6cc-6abd-7f6c-7ebf-38d69fb86170
CSeq: 16977 INVITE
Content-Length: 0
Server: FPBX-14.0.3.1(15.4.0)
Allow: OPTIONS,SUBSCRIBE,NOTIFY,PUBLISH,INVITE,ACK,BYE,CANCEL,UPDATE,PRACK,REGISTER,MESSAGE,REFER
P-Asserted-Identity: "Vixar"<sip:0101221@caller.local>
tsk_utils.js?svn=252:116 recv=SIP/2.0 503 Service Unavailable
Via: SIP/2.0/WSS df7jal23ls0d.invalid;rport=58552;received=10.0.19.224;branch=z9hG4bK8TyhVFPP9VlUgnOnmmwyJcgHsUIDqiM0
From: "Vixar"<sip:0101222@10.0.19.245>;tag=lkOnhyQZVIEVxiVQdyTF
To: <sip:0101221@caller.local>;tag=a7d6652a-252e-4abf-beed-0759d9c4edb0
Call-ID: 7de7a6cc-6abd-7f6c-7ebf-38d69fb86170
CSeq: 16977 INVITE
Content-Length: 0
Server: FPBX-14.0.3.1(15.4.0)
Allow: OPTIONS,SUBSCRIBE,NOTIFY,PUBLISH,INVITE,ACK,BYE,CANCEL,UPDATE,PRACK,REGISTER,MESSAGE,REFER
Reason: cause=34;cause=34
P-Asserted-Identity: "Vixar"<sip:0101221@caller.local>