A SIP 407 Proxy Authentication Required

[LEC]

52xxxx

12:23:56 1718643226mS SIP Tx: UDP 10.4.1.254:5060 -> 10.1.18.4:5060
SIP/2.0 503 Service Unavailable
Via: SIP/2.0/UDP 10.1.18.4:5060;branch=z9hG4bK1009109270;rport
From: <sip:[email protected]>;tag=1228920953
Call-ID: [email protected]
CSeq: 1200 INVITE
Retry-After: 1800
Allow: INVITE,ACK,CANCEL,OPTIONS,BYE,INFO,REFER,NOTIFY,SUBSCRIBE,REGISTER,PUBLISH,UPDATE
Supported: 100rel
Server: IP Office 11.0.4.8.0 build 17
Reason: Q.850;cause=31;text="Normal, unspecified"
Content-Length: 0
To: <sip:[email protected]>;tag=92d9867932db6bd7

12:23:56 1718643258mS SIP Call Rx: phone
ACK sip:[email protected] SIP/2.0
Via: SIP/2.0/UDP 10.1.18.4:5060;branch=z9hG4bK1009109270;rport
From: <sip:[email protected]>;tag=1228920953
To: <sip:[email protected]>;tag=92d9867932db6bd7
Call-ID: [email protected]
CSeq: 1200 ACK
Content-Length: 0

 

[bitn2]

And the question is??