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Failure to establish P2P Call

    Question

  • Hi,

    I have been trying to solve this problem for two days but cannot get to the root of it.

    Problem:

    Two users from the same company, one is external on a lync client on his pc and the other inside the company on a lync client on his pc, when home user initiates a audio/video call nothing happens for work user, they dont even get notified of the call.

    What does work:

    Both users outside of the network, both users inside of the network, desktop sharing and a conference audio/video with one user outside and one user inside.

    Environment:

    We have two edge servers and one enterprise pool which contains two enterprise servers. While testing I shut down one edge server and one front end server to make troubleshooting easier.

    Traces:

    Logging on the edge server gives me the following error twice:

    TL_INFO(TF_PROTOCOL) [0]0F78.0D08::04/27/2012-18:48:24.027.000444ef (SIPStack,SIPAdminLog::TraceProtocolRecord:SIPAdminLog.cpp(125))$$begin_record
    Trace-Correlation-Id: 2072951416
    Instance-Id: 000013AC
    Direction: incoming;source="internal edge";destination="external edge"
    Peer: pool.domain.net:5061
    Message-Type: response
    Start-Line: SIP/2.0 408 Request Timeout
    From: "Requesting User"<sip:requesting.user@domain.com>;tag=c238bcf642;epid=dcb8c117db
    To: <sip:requested.user@domain.com>;tag=45EA2C3769C60367059330289D9E66D6
    CSeq: 1 INVITE
    Call-ID: b03ea1dc6ae04299aeb771fa7043bdfb
    ms-application-via: standalonedbserver.fqdn.net_;ms-server=frontend.fqdn.net;ms-pool=pool.domain.net;ms-application=51FB453D-5B9F-45df-83B4-ADD1F7E604A8
    Via: SIP/2.0/TLS <EdgeInternalNIC_IP>:49932;branch=z9hG4bKE699B0D2.D52C7B2CDBAB7B34;branched=FALSE;ms-received-port=49932;ms-received-cid=7FB00
    Via: SIP/2.0/TLS <Home PC Internal IP>:51535;received=<Home Router External IP>;ms-received-port=51535;ms-received-cid=A600
    ms-diagnostics: 5026;reason="The request was sent to the callee's client endpoints but no further response was received.";AppUri="http%3A%2F%2Fwww.microsoft.com%2FLCS%2FDefaultRouting";client-forks="1";source="frontend.fqdn.net"
    Server: RTC/4.0
    Content-Length: 0
    Message-Body: –
    $$end_record

    Application log on the home pc:

    Log Name:      Application
    Source:        Communicator
    Date:          4/27/2012 11:48:29 AM
    Event ID:      11
    Task Category: None
    Level:         Warning
    Keywords:      Classic
    User:          N/A
    Computer:      homepc
    Description:
    A SIP request made by Communicator failed in an unexpected manner (status code 80ef0198). More information is contained in the following technical data:
     
     RequestUri:   sip:requested.user@domain.com
    From:         sip:requesting.user@domain.com;tag=c238bcf642
    To:           sip:requested.user@domain.com;tag=45EA2C3769C60367059330289D9E66D6
    Call-ID:      b03ea1dc6ae04299aeb771fa7043bdfb
    Content-type: multipart/alternative;boundary="----=_NextPart_000_0244_01CD246B.94D6D420";call-type=audiovideo

    ------=_NextPart_000_0244_01CD246B.94D6D420
    Content-Type: application/sdp
    Content-Transfer-Encoding: 7bit
    Content-ID: <788d2c8845644258896c1df94ee541d8@domain.com>
    Content-Disposition: session; handling=optional; ms-proxy-2007fallback

    v=0
    o=- 0 0 IN IP4 <Home PC Internal IP>
    s=session
    c=IN IP4 <Home PC Internal IP>
    b=CT:99980
    t=0 0
    m=audio 27994 RTP/SAVP 114 9 112 111 0 8 116 115 4 97 13 118 101
    a=candidate:PT6AVLXa4tujaXc+c3WoTFJ695P1yFxqgDXWtt8OZWs 1 UHv60+BJvpK3kTLeOaa2BA UDP 0.830 <Home PC Internal IP> 27994
    a=candidate:PT6AVLXa4tujaXc+c3WoTFJ695P1yFxqgDXWtt8OZWs 2 UHv60+BJvpK3kTLeOaa2BA UDP 0.830 <Home PC Internal IP> 27995
    a=cryptoscale:1 client AES_CM_128_HMAC_SHA1_80 inline:MfWpySrr0EJoD+Er2VfrRoIAH/wTGxdcDwJ30Ov5|2^31|1:1
    a=crypto:2 AES_CM_128_HMAC_SHA1_80 inline:zXEluwyi77Ket+SzodFljIYPwz2BIKRgOh6ERSDq|2^31|1:1
    a=crypto:3 AES_CM_128_HMAC_SHA1_80 inline:caZjJk62aiXOrSxbfwmg/gphfOMSv9WbU5ojjo99|2^31
    a=maxptime:200
    a=rtpmap:114 x-msrta/16000
    a=fmtp:114 bitrate=29000
    a=rtpmap:9 G722/8000
    a=rtpmap:112 G7221/16000
    a=fmtp:112 bitrate=24000
    a=rtpmap:111 SIREN/16000
    a=fmtp:111 bitrate=16000
    a=rtpmap:0 PCMU/8000
    a=rtpmap:8 PCMA/8000
    a=rtpmap:116 AAL2-G726-32/8000
    a=rtpmap:115 x-msrta/8000
    a=fmtp:115 bitrate=11800
    a=rtpmap:4 G723/8000
    a=rtpmap:97 RED/8000
    a=rtpmap:13 CN/8000
    a=rtpmap:118 CN/16000
    a=rtpmap:101 telephone-event/8000
    a=fmtp:101 0-16
    a=encryption:required
    m=video 5682 RTP/SAVP 121 34
    a=x-caps:121 263:640:480:30.0:600000:1;4359:352:288:15.0:250000:1;8455:176:144:15.0:180000:1
    a=x-caps:34 262:352:288:15.0:250000:1;4358:176:144:15.0:180000:1
    a=candidate:31ruYXRX6agSwXuejvI/0lavrlcQzNDplIQ0+jYcm8Q 1 jLqTx68o+lFF3y/1d5PjlA UDP 0.830 <Home PC Internal IP> 5682
    a=candidate:31ruYXRX6agSwXuejvI/0lavrlcQzNDplIQ0+jYcm8Q 2 jLqTx68o+lFF3y/1d5PjlA UDP 0.830 <Home PC Internal IP> 5683
    a=cryptoscale:1 client AES_CM_128_HMAC_SHA1_80 inline:dJjjAoKhk0QvnCa9fImvUvSRhiS5GxJ/Sa6+/irw|2^31|1:1
    a=crypto:2 AES_CM_128_HMAC_SHA1_80 inline:BbjihGUdUelhvJXByio91aL/BhUSq2m8DVdRXJG9|2^31|1:1
    a=crypto:3 AES_CM_128_HMAC_SHA1_80 inline:ie6UDtLxmoROVhQLKpr89kHt0lqfkphsIN/6G1p1|2^31
    a=rtpmap:121 x-rtvc1/90000
    a=rtpmap:34 H263/90000
    a=encryption:required

    ------=_NextPart_000_0244_01CD246B.94D6D420
    Content-Type: application/sdp
    Content-Transfer-Encoding: 7bit
    Content-ID: <49bf6902f3b3489b9dc22b239ac2e453@domain.com>
    Content-Disposition: session; handling=optional

    v=0
    o=- 0 1 IN IP4 <AV Edge External IP Address>
    s=session
    c=IN IP4 <AV Edge External IP Address>
    b=CT:99980
    t=0 0
    m=audio 57981 RTP/SAVP 114 9 112 111 0 8 116 115 4 97 13 118 101
    a=ice-ufrag:PbWP
    a=ice-pwd:KrN72uUuLXrjWinJl4R27Ne2
    a=candidate:1 1 UDP 2130706431 <Home PC Internal IP> 26130 typ host
    a=candidate:1 2 UDP 2130705918 <Home PC Internal IP> 26131 typ host
    a=candidate:2 1 TCP-PASS 6556159 <AV Edge External IP Address> 52173 typ relay raddr <Home Router External IP> rport 4859
    a=candidate:2 2 TCP-PASS 6556158 <AV Edge External IP Address> 52173 typ relay raddr <Home Router External IP> rport 4859
    a=candidate:3 1 UDP 16648703 <AV Edge External IP Address> 57981 typ relay raddr <Home Router External IP> rport 32308
    a=candidate:3 2 UDP 16648702 <AV Edge External IP Address> 55335 typ relay raddr <Home Router External IP> rport 32309
    a=candidate:4 1 UDP 1694235647 <Home Router External IP> 32308 typ srflx raddr <Home PC Internal IP> rport 32308
    a=candidate:4 2 UDP 1694234110 <Home Router External IP> 32309 typ srflx raddr <Home PC Internal IP> rport 32309
    a=candidate:5 1 TCP-ACT 7076351 <AV Edge External IP Address> 52173 typ relay raddr <Home Router External IP> rport 4859
    a=candidate:5 2 TCP-ACT 7075838 <AV Edge External IP Address> 52173 typ relay raddr <Home Router External IP> rport 4859
    a=candidate:6 1 TCP-ACT 1684797439 <Home Router External IP> 4859 typ srflx raddr <Home PC Internal IP> rport 4859
    a=candidate:6 2 TCP-ACT 1684796926 <Home Router External IP> 4859 typ srflx raddr <Home PC Internal IP> rport 4859
    a=cryptoscale:1 client AES_CM_128_HMAC_SHA1_80 inline:MfWpySrr0EJoD+Er2VfrRoIAH/wTGxdcDwJ30Ov5|2^31|1:1
    a=crypto:2 AES_CM_128_HMAC_SHA1_80 inline:zXEluwyi77Ket+SzodFljIYPwz2BIKRgOh6ERSDq|2^31|1:1
    a=crypto:3 AES_CM_128_HMAC_SHA1_80 inline:caZjJk62aiXOrSxbfwmg/gphfOMSv9WbU5ojjo99|2^31
    a=maxptime:200
    a=rtcp:55335
    a=rtpmap:114 x-msrta/16000
    a=fmtp:114 bitrate=29000
    a=rtpmap:9 G722/8000
    a=rtpmap:112 G7221/16000
    a=fmtp:112 bitrate=24000
    a=rtpmap:111 SIREN/16000
    a=fmtp:111 bitrate=16000
    a=rtpmap:0 PCMU/8000
    a=rtpmap:8 PCMA/8000
    a=rtpmap:116 AAL2-G726-32/8000
    a=rtpmap:115 x-msrta/8000
    a=fmtp:115 bitrate=11800
    a=rtpmap:4 G723/8000
    a=rtpmap:97 RED/8000
    a=rtpmap:13 CN/8000
    a=rtpmap:118 CN/16000
    a=rtpmap:101 telephone-event/8000
    a=fmtp:101 0-16
    a=encryption:required
    m=video 59077 RTP/SAVP 121 34
    a=ice-ufrag:m2Qe
    a=ice-pwd:tETl/F3NiYMpb2RvNJqh+sNq
    a=x-caps:121 263:640:480:30.0:600000:1;4359:352:288:15.0:250000:1;8455:176:144:15.0:180000:1
    a=x-caps:34 262:352:288:15.0:250000:1;4358:176:144:15.0:180000:1
    a=candidate:1 1 UDP 2130706431 <Home PC Internal IP> 29198 typ host
    a=candidate:1 2 UDP 2130705918 <Home PC Internal IP> 29199 typ host
    a=candidate:2 1 TCP-PASS 6556159 <AV Edge External IP Address> 58732 typ relay raddr <Home Router External IP> rport 32593
    a=candidate:2 2 TCP-PASS 6556158 <AV Edge External IP Address> 58732 typ relay raddr <Home Router External IP> rport 32593
    a=candidate:3 1 UDP 16648703 <AV Edge External IP Address> 59077 typ relay raddr <Home Router External IP> rport 8860
    a=candidate:3 2 UDP 16648702 <AV Edge External IP Address> 52687 typ relay raddr <Home Router External IP> rport 8861
    a=candidate:4 1 UDP 1694235647 <Home Router External IP> 8860 typ srflx raddr <Home PC Internal IP> rport 8860
    a=candidate:4 2 UDP 1694234110 <Home Router External IP> 8861 typ srflx raddr <Home PC Internal IP> rport 8861
    a=candidate:5 1 TCP-ACT 7076351 <AV Edge External IP Address> 58732 typ relay raddr <Home Router External IP> rport 32593
    a=candidate:5 2 TCP-ACT 7075838 <AV Edge External IP Address> 58732 typ relay raddr <Home Router External IP> rport 32593
    a=candidate:6 1 TCP-ACT 1684797439 <Home Router External IP> 32593 typ srflx raddr <Home PC Internal IP> rport 32593
    a=candidate:6 2 TCP-ACT 1684796926 <Home Router External IP> 32593 typ srflx raddr <Home PC Internal IP> rport 32593
    a=cryptoscale:1 client AES_CM_128_HMAC_SHA1_80 inline:dJjjAoKhk0QvnCa9fImvUvSRhiS5GxJ/Sa6+/irw|2^31|1:1
    a=crypto:2 AES_CM_128_HMAC_SHA1_80 inline:BbjihGUdUelhvJXByio91aL/BhUSq2m8DVdRXJG9|2^31|1:1
    a=crypto:3 AES_CM_128_HMAC_SHA1_80 inline:ie6UDtLxmoROVhQLKpr89kHt0lqfkphsIN/6G1p1|2^31
    a=rtcp:52687
    a=rtpmap:121 x-rtvc1/90000
    a=rtpmap:34 H263/90000
    a=encryption:required

    ------=_NextPart_000_0244_01CD246B.94D6D420--


    Response Data:

    408  Request Timeout
    ms-diagnostics:  5026;reason="The request was sent to the callee's client endpoints but no further response was received.";AppUri="httpRequestUri:   sip:requested.user@domain.com
    From:         sip:requesting.user@domain.com;tag=c238bcf642
    To:           sip:requested.user@domain.com;tag=45EA2C3769C60367059330289D9E66D6
    Call-ID:      b03ea1dc6ae04299aeb771fa7043bdfb
    Content-type: multipart/alternative;boundary="----=_NextPart_000_0244_01CD246B.94D6D420";call-type=audiovideo

    ------=_NextPart_000_0244_01CD246B.94D6D420
    Content-Type: application/sdp
    Content-Transfer-Encoding: 7bit
    Content-ID: <788d2c8845644258896c1df94ee541d8@domain.com>
    Content-Disposition: session; handling=optional; ms-proxy-2007fallback

    v=0
    o=- 0 0 IN IP4 <Home PC Internal IP>
    s=session
    c=IN IP4 <Home PC Internal IP>
    b=CT:99980
    t=0 0
    m=audio 27994 RTP/SAVP 114 9 112 111 0 8 116 115 4 97 13 118 101
    a=candidate:PT6AVLXa4tujaXc+c3WoTFJ695P1yFxqgDXWtt8OZWs 1 UHv60+BJvpK3kTLeOaa2BA UDP 0.830 <Home PC Internal IP> 27994
    a=candidate:PT6AVLXa4tujaXc+c3WoTFJ695P1yFxqgDXWtt8OZWs 2 UHv60+BJvpK3kTLeOaa2BA UDP 0.830 <Home PC Internal IP> 27995
    a=cryptoscale:1 client AES_CM_128_HMAC_SHA1_80 inline:MfWpySrr0EJoD+Er2VfrRoIAH/wTGxdcDwJ30Ov5|2^31|1:1
    a=crypto:2 AES_CM_128_HMAC_SHA1_80 inline:zXEluwyi77Ket+SzodFljIYPwz2BIKRgOh6ERSDq|2^31|1:1
    a=crypto:3 AES_CM_128_HMAC_SHA1_80 inline:caZjJk62aiXOrSxbfwmg/gphfOMSv9WbU5ojjo99|2^31
    a=maxptime:200
    a=rtpmap:114 x-msrta/16000
    a=fmtp:114 bitrate=29000
    a=rtpmap:9 G722/8000
    a=rtpmap:112 G7221/16000
    a=fmtp:112 bitrate=24000
    a=rtpmap:111 SIREN/16000
    a=fmtp:111 bitrate=16000
    a=rtpmap:0 PCMU/8000
    a=rtpmap:8 PCMA/8000
    a=rtpmap:116 AAL2-G726-32/8000
    a=rtpmap:115 x-msrta/8000
    a=fmtp:115 bitrate=11800
    a=rtpmap:4 G723/8000
    a=rtpmap:97 RED/8000
    a=rtpmap:13 CN/8000
    a=rtpmap:118 CN/16000
    a=rtpmap:101 telephone-event/8000
    a=fmtp:101 0-16
    a=encryption:required
    m=video 5682 RTP/SAVP 121 34
    a=x-caps:121 263:640:480:30.0:600000:1;4359:352:288:15.0:250000:1;8455:176:144:15.0:180000:1
    a=x-caps:34 262:352:288:15.0:250000:1;4358:176:144:15.0:180000:1
    a=candidate:31ruYXRX6agSwXuejvI/0lavrlcQzNDplIQ0+jYcm8Q 1 jLqTx68o+lFF3y/1d5PjlA UDP 0.830 <Home PC Internal IP> 5682
    a=candidate:31ruYXRX6agSwXuejvI/0lavrlcQzNDplIQ0+jYcm8Q 2 jLqTx68o+lFF3y/1d5PjlA UDP 0.830 <Home PC Internal IP> 5683
    a=cryptoscale:1 client AES_CM_128_HMAC_SHA1_80 inline:dJjjAoKhk0QvnCa9fImvUvSRhiS5GxJ/Sa6+/irw|2^31|1:1
    a=crypto:2 AES_CM_128_HMAC_SHA1_80 inline:BbjihGUdUelhvJXByio91aL/BhUSq2m8DVdRXJG9|2^31|1:1
    a=crypto:3 AES_CM_128_HMAC_SHA1_80 inline:ie6UDtLxmoROVhQLKpr89kHt0lqfkphsIN/6G1p1|2^31
    a=rtpmap:121 x-rtvc1/90000
    a=rtpmap:34 H263/90000
    a=encryption:required

    ------=_NextPart_000_0244_01CD246B.94D6D420
    Content-Type: application/sdp
    Content-Transfer-Encoding: 7bit
    Content-ID: <49bf6902f3b3489b9dc22b239ac2e453@domain.com>
    Content-Disposition: session; handling=optional

    v=0
    o=- 0 1 IN IP4 <AV Edge External IP Address>
    s=session
    c=IN IP4 <AV Edge External IP Address>
    b=CT:99980
    t=0 0
    m=audio 57981 RTP/SAVP 114 9 112 111 0 8 116 115 4 97 13 118 101
    a=ice-ufrag:PbWP
    a=ice-pwd:KrN72uUuLXrjWinJl4R27Ne2
    a=candidate:1 1 UDP 2130706431 <Home PC Internal IP> 26130 typ host
    a=candidate:1 2 UDP 2130705918 <Home PC Internal IP> 26131 typ host
    a=candidate:2 1 TCP-PASS 6556159 <AV Edge External IP Address> 52173 typ relay raddr <Home Router External IP> rport 4859
    a=candidate:2 2 TCP-PASS 6556158 <AV Edge External IP Address> 52173 typ relay raddr <Home Router External IP> rport 4859
    a=candidate:3 1 UDP 16648703 <AV Edge External IP Address> 57981 typ relay raddr <Home Router External IP> rport 32308
    a=candidate:3 2 UDP 16648702 <AV Edge External IP Address> 55335 typ relay raddr <Home Router External IP> rport 32309
    a=candidate:4 1 UDP 1694235647 <Home Router External IP> 32308 typ srflx raddr <Home PC Internal IP> rport 32308
    a=candidate:4 2 UDP 1694234110 <Home Router External IP> 32309 typ srflx raddr <Home PC Internal IP> rport 32309
    a=candidate:5 1 TCP-ACT 7076351 <AV Edge External IP Address> 52173 typ relay raddr <Home Router External IP> rport 4859
    a=candidate:5 2 TCP-ACT 7075838 <AV Edge External IP Address> 52173 typ relay raddr <Home Router External IP> rport 4859
    a=candidate:6 1 TCP-ACT 1684797439 <Home Router External IP> 4859 typ srflx raddr <Home PC Internal IP> rport 4859
    a=candidate:6 2 TCP-ACT 1684796926 <Home Router External IP> 4859 typ srflx raddr <Home PC Internal IP> rport 4859
    a=cryptoscale:1 client AES_CM_128_HMAC_SHA1_80 inline:MfWpySrr0EJoD+Er2VfrRoIAH/wTGxdcDwJ30Ov5|2^31|1:1
    a=crypto:2 AES_CM_128_HMAC_SHA1_80 inline:zXEluwyi77Ket+SzodFljIYPwz2BIKRgOh6ERSDq|2^31|1:1
    a=crypto:3 AES_CM_128_HMAC_SHA1_80 inline:caZjJk62aiXOrSxbfwmg/gphfOMSv9WbU5ojjo99|2^31
    a=maxptime:200
    a=rtcp:55335
    a=rtpmap:114 x-msrta/16000
    a=fmtp:114 bitrate=29000
    a=rtpmap:9 G722/8000
    a=rtpmap:112 G7221/16000
    a=fmtp:112 bitrate=24000
    a=rtpmap:111 SIREN/16000
    a=fmtp:111 bitrate=16000
    a=rtpmap:0 PCMU/8000
    a=rtpmap:8 PCMA/8000
    a=rtpmap:116 AAL2-G726-32/8000
    a=rtpmap:115 x-msrta/8000
    a=fmtp:115 bitrate=11800
    a=rtpmap:4 G723/8000
    a=rtpmap:97 RED/8000
    a=rtpmap:13 CN/8000
    a=rtpmap:118 CN/16000
    a=rtpmap:101 telephone-event/8000
    a=fmtp:101 0-16
    a=encryption:required
    m=video 59077 RTP/SAVP 121 34
    a=ice-ufrag:m2Qe
    a=ice-pwd:tETl/F3NiYMpb2RvNJqh+sNq
    a=x-caps:121 263:640:480:30.0:600000:1;4359:352:288:15.0:250000:1;8455:176:144:15.0:180000:1
    a=x-caps:34 262:352:288:15.0:250000:1;4358:176:144:15.0:180000:1
    a=candidate:1 1 UDP 2130706431 <Home PC Internal IP> 29198 typ host
    a=candidate:1 2 UDP 2130705918 <Home PC Internal IP> 29199 typ host
    a=candidate:2 1 TCP-PASS 6556159 <AV Edge External IP Address> 58732 typ relay raddr <Home Router External IP> rport 32593
    a=candidate:2 2 TCP-PASS 6556158 <AV Edge External IP Address> 58732 typ relay raddr <Home Router External IP> rport 32593
    a=candidate:3 1 UDP 16648703 <AV Edge External IP Address> 59077 typ relay raddr <Home Router External IP> rport 8860
    a=candidate:3 2 UDP 16648702 <AV Edge External IP Address> 52687 typ relay raddr <Home Router External IP> rport 8861
    a=candidate:4 1 UDP 1694235647 <Home Router External IP> 8860 typ srflx raddr <Home PC Internal IP> rport 8860
    a=candidate:4 2 UDP 1694234110 <Home Router External IP> 8861 typ srflx raddr <Home PC Internal IP> rport 8861
    a=candidate:5 1 TCP-ACT 7076351 <AV Edge External IP Address> 58732 typ relay raddr <Home Router External IP> rport 32593
    a=candidate:5 2 TCP-ACT 7075838 <AV Edge External IP Address> 58732 typ relay raddr <Home Router External IP> rport 32593
    a=candidate:6 1 TCP-ACT 1684797439 <Home Router External IP> 32593 typ srflx raddr <Home PC Internal IP> rport 32593
    a=candidate:6 2 TCP-ACT 1684796926 <Home Router External IP> 32593 typ srflx raddr <Home PC Internal IP> rport 32593
    a=cryptoscale:1 client AES_CM_128_HMAC_SHA1_80 inline:dJjjAoKhk0QvnCa9fImvUvSRhiS5GxJ/Sa6+/irw|2^31|1:1
    a=crypto:2 AES_CM_128_HMAC_SHA1_80 inline:BbjihGUdUelhvJXByio91aL/BhUSq2m8DVdRXJG9|2^31|1:1
    a=crypto:3 AES_CM_128_HMAC_SHA1_80 inline:ie6UDtLxmoROVhQLKpr89kHt0lqfkphsIN/6G1p1|2^31
    a=rtcp:52687
    a=rtpmap:121 x-rtvc1/90000
    a=rtpmap:34 H263/90000
    a=encryption:required

    ------=_NextPart_000_0244_01CD246B.94D6D420--


    Response Data:

    408  Request Timeout
    ms-diagnostics:  5026;reason="The request was sent to the callee's client endpoints but no further response was received.";AppUri="httpRequestUri:   sip:requested.user@domain.com
    From:         sip:requesting.user@domain.com;tag=c238bcf642
    To:           sip:requested.user@domain.com;tag=45EA2C3769C60367059330289D9E66D6
    Call-ID:      b03ea1dc6ae04299aeb771fa7043bdfb
    Content-type: multipart/alternative;boundary="----=_NextPart_000_0244_01CD246B.94D6D420";call-type=audiovideo

    ------=_NextPart_000_0244_01CD246B.94D6D420
    Content-Type: application/sdp
    Content-Transfer-Encoding: 7bit
    Content-ID: <788d2c8845644258896c1df94ee541d8@domain.com>
    Content-Disposition: session; handling=optional; ms-proxy-2007fallback

    v=0
    o=- 0 0 IN IP4 <Home PC Internal IP>
    s=session
    c=IN IP4 <Home PC Internal IP>
    b=CT:99980
    t=0 0
    m=audio 27994 RTP/SAVP 114 9 112 111 0 8 116 115 4 97 13 118 101
    a=candidate:PT6AVLXa4tujaXc+c3WoTFJ695P1yFxqgDXWtt8OZWs 1 UHv60+BJvpK3kTLeOaa2BA UDP 0.830 <Home PC Internal IP> 27994
    a=candidate:PT6AVLXa4tujaXc+c3WoTFJ695P1yFxqgDXWtt8OZWs 2 UHv60+BJvpK3kTLeOaa2BA UDP 0.830 <Home PC Internal IP> 27995
    a=cryptoscale:1 client AES_CM_128_HMAC_SHA1_80 inline:MfWpySrr0EJoD+Er2VfrRoIAH/wTGxdcDwJ30Ov5|2^31|1:1
    a=crypto:2 AES_CM_128_HMAC_SHA1_80 inline:zXEluwyi77Ket+SzodFljIYPwz2BIKRgOh6ERSDq|2^31|1:1
    a=crypto:3 AES_CM_128_HMAC_SHA1_80 inline:caZjJk62aiXOrSxbfwmg/gphfOMSv9WbU5ojjo99|2^31
    a=maxptime:200
    a=rtpmap:114 x-msrta/16000
    a=fmtp:114 bitrate=29000
    a=rtpmap:9 G722/8000
    a=rtpmap:112 G7221/16000
    a=fmtp:112 bitrate=24000
    a=rtpmap:111 SIREN/16000
    a=fmtp:111 bitrate=16000
    a=rtpmap:0 PCMU/8000
    a=rtpmap:8 PCMA/8000
    a=rtpmap:116 AAL2-G726-32/8000
    a=rtpmap:115 x-msrta/8000
    a=fmtp:115 bitrate=11800
    a=rtpmap:4 G723/8000
    a=rtpmap:97 RED/8000
    a=rtpmap:13 CN/8000
    a=rtpmap:118 CN/16000
    a=rtpmap:101 telephone-event/8000
    a=fmtp:101 0-16
    a=encryption:required
    m=video 5682 RTP/SAVP 121 34
    a=x-caps:121 263:640:480:30.0:600000:1;4359:352:288:15.0:250000:1;8455:176:144:15.0:180000:1
    a=x-caps:34 262:352:288:15.0:250000:1;4358:176:144:15.0:180000:1
    a=candidate:31ruYXRX6agSwXuejvI/0lavrlcQzNDplIQ0+jYcm8Q 1 jLqTx68o+lFF3y/1d5PjlA UDP 0.830 <Home PC Internal IP> 5682
    a=candidate:31ruYXRX6agSwXuejvI/0lavrlcQzNDplIQ0+jYcm8Q 2 jLqTx68o+lFF3y/1d5PjlA UDP 0.830 <Home PC Internal IP> 5683
    a=cryptoscale:1 client AES_CM_128_HMAC_SHA1_80 inline:dJjjAoKhk0QvnCa9fImvUvSRhiS5GxJ/Sa6+/irw|2^31|1:1
    a=crypto:2 AES_CM_128_HMAC_SHA1_80 inline:BbjihGUdUelhvJXByio91aL/BhUSq2m8DVdRXJG9|2^31|1:1
    a=crypto:3 AES_CM_128_HMAC_SHA1_80 inline:ie6UDtLxmoROVhQLKpr89kHt0lqfkphsIN/6G1p1|2^31
    a=rtpmap:121 x-rtvc1/90000
    a=rtpmap:34 H263/90000
    a=encryption:required

    ------=_NextPart_000_0244_01CD246B.94D6D420
    Content-Type: application/sdp
    Content-Transfer-Encoding: 7bit
    Content-ID: <49bf6902f3b3489b9dc22b239ac2e453@domain.com>
    Content-Disposition: session; handling=optional

    v=0
    o=- 0 1 IN IP4 <AV Edge External IP Address>
    s=session
    c=IN IP4 <AV Edge External IP Address>
    b=CT:99980
    t=0 0
    m=audio 57981 RTP/SAVP 114 9 112 111 0 8 116 115 4 97 13 118 101
    a=ice-ufrag:PbWP
    a=ice-pwd:KrN72uUuLXrjWinJl4R27Ne2
    a=candidate:1 1 UDP 2130706431 <Home PC Internal IP> 26130 typ host
    a=candidate:1 2 UDP 2130705918 <Home PC Internal IP> 26131 typ host
    a=candidate:2 1 TCP-PASS 6556159 <AV Edge External IP Address> 52173 typ relay raddr <Home Router External IP> rport 4859
    a=candidate:2 2 TCP-PASS 6556158 <AV Edge External IP Address> 52173 typ relay raddr <Home Router External IP> rport 4859
    a=candidate:3 1 UDP 16648703 <AV Edge External IP Address> 57981 typ relay raddr <Home Router External IP> rport 32308
    a=candidate:3 2 UDP 16648702 <AV Edge External IP Address> 55335 typ relay raddr <Home Router External IP> rport 32309
    a=candidate:4 1 UDP 1694235647 <Home Router External IP> 32308 typ srflx raddr <Home PC Internal IP> rport 32308
    a=candidate:4 2 UDP 1694234110 <Home Router External IP> 32309 typ srflx raddr <Home PC Internal IP> rport 32309
    a=candidate:5 1 TCP-ACT 7076351 <AV Edge External IP Address> 52173 typ relay raddr <Home Router External IP> rport 4859
    a=candidate:5 2 TCP-ACT 7075838 <AV Edge External IP Address> 52173 typ relay raddr <Home Router External IP> rport 4859
    a=candidate:6 1 TCP-ACT 1684797439 <Home Router External IP> 4859 typ srflx raddr <Home PC Internal IP> rport 4859
    a=candidate:6 2 TCP-ACT 1684796926 <Home Router External IP> 4859 typ srflx raddr <Home PC Internal IP> rport 4859
    a=cryptoscale:1 client AES_CM_128_HMAC_SHA1_80 inline:MfWpySrr0EJoD+Er2VfrRoIAH/wTGxdcDwJ30Ov5|2^31|1:1
    a=crypto:2 AES_CM_128_HMAC_SHA1_80 inline:zXEluwyi77Ket+SzodFljIYPwz2BIKRgOh6ERSDq|2^31|1:1
    a=crypto:3 AES_CM_128_HMAC_SHA1_80 inline:caZjJk62aiXOrSxbfwmg/gphfOMSv9WbU5ojjo99|2^31
    a=maxptime:200
    a=rtcp:55335
    a=rtpmap:114 x-msrta/16000
    a=fmtp:114 bitrate=29000
    a=rtpmap:9 G722/8000
    a=rtpmap:112 G7221/16000
    a=fmtp:112 bitrate=24000
    a=rtpmap:111 SIREN/16000
    a=fmtp:111 bitrate=16000
    a=rtpmap:0 PCMU/8000
    a=rtpmap:8 PCMA/8000
    a=rtpmap:116 AAL2-G726-32/8000
    a=rtpmap:115 x-msrta/8000
    a=fmtp:115 bitrate=11800
    a=rtpmap:4 G723/8000
    a=rtpmap:97 RED/8000
    a=rtpmap:13 CN/8000
    a=rtpmap:118 CN/16000
    a=rtpmap:101 telephone-event/8000
    a=fmtp:101 0-16
    a=encryption:required
    m=video 59077 RTP/SAVP 121 34
    a=ice-ufrag:m2Qe
    a=ice-pwd:tETl/F3NiYMpb2RvNJqh+sNq
    a=x-caps:121 263:640:480:30.0:600000:1;4359:352:288:15.0:250000:1;8455:176:144:15.0:180000:1
    a=x-caps:34 262:352:288:15.0:250000:1;4358:176:144:15.0:180000:1
    a=candidate:1 1 UDP 2130706431 <Home PC Internal IP> 29198 typ host
    a=candidate:1 2 UDP 2130705918 <Home PC Internal IP> 29199 typ host
    a=candidate:2 1 TCP-PASS 6556159 <AV Edge External IP Address> 58732 typ relay raddr <Home Router External IP> rport 32593
    a=candidate:2 2 TCP-PASS 6556158 <AV Edge External IP Address> 58732 typ relay raddr <Home Router External IP> rport 32593
    a=candidate:3 1 UDP 16648703 <AV Edge External IP Address> 59077 typ relay raddr <Home Router External IP> rport 8860
    a=candidate:3 2 UDP 16648702 <AV Edge External IP Address> 52687 typ relay raddr <Home Router External IP> rport 8861
    a=candidate:4 1 UDP 1694235647 <Home Router External IP> 8860 typ srflx raddr <Home PC Internal IP> rport 8860
    a=candidate:4 2 UDP 1694234110 <Home Router External IP> 8861 typ srflx raddr <Home PC Internal IP> rport 8861
    a=candidate:5 1 TCP-ACT 7076351 <AV Edge External IP Address> 58732 typ relay raddr <Home Router External IP> rport 32593
    a=candidate:5 2 TCP-ACT 7075838 <AV Edge External IP Address> 58732 typ relay raddr <Home Router External IP> rport 32593
    a=candidate:6 1 TCP-ACT 1684797439 <Home Router External IP> 32593 typ srflx raddr <Home PC Internal IP> rport 32593
    a=candidate:6 2 TCP-ACT 1684796926 <Home Router External IP> 32593 typ srflx raddr <Home PC Internal IP> rport 32593
    a=cryptoscale:1 client AES_CM_128_HMAC_SHA1_80 inline:dJjjAoKhk0QvnCa9fImvUvSRhiS5GxJ/Sa6+/irw|2^31|1:1
    a=crypto:2 AES_CM_128_HMAC_SHA1_80 inline:BbjihGUdUelhvJXByio91aL/BhUSq2m8DVdRXJG9|2^31|1:1
    a=crypto:3 AES_CM_128_HMAC_SHA1_80 inline:ie6UDtLxmoROVhQLKpr89kHt0lqfkphsIN/6G1p1|2^31
    a=rtcp:52687
    a=rtpmap:121 x-rtvc1/90000
    a=rtpmap:34 H263/90000
    a=encryption:required

    ------=_NextPart_000_0244_01CD246B.94D6D420--


    Response Data:

    408  Request Timeout
    ms-diagnostics:  5026;reason="The request was sent to the callee's client endpoints but no further response was received.";AppUri="httpRequestUri:   sip:requested.user@domain.com
    From:         sip:requesting.user@domain.com;tag=c238bcf642
    To:           sip:requested.user@domain.com;tag=45EA2C3769C60367059330289D9E66D6
    Call-ID:      b03ea1dc6ae04299aeb771fa7043bdfb
    Content-type: multipart/alternative;boundary="----=_NextPart_000_0244_01CD246B.94D6D420";call-type=audiovideo

    ------=_NextPart_000_0244_01CD246B.94D6D420
    Content-Type: application/sdp
    Content-Transfer-Encoding: 7bit
    Content-ID: <788d2c8845644258896c1df94ee541d8@domain.com>
    Content-Disposition: session; handling=optional; ms-proxy-2007fallback

    v=0
    o=- 0 0 IN IP4 <Home PC Internal IP>
    s=session
    c=IN IP4 <Home PC Internal IP>
    b=CT:99980
    t=0 0
    m=audio 27994 RTP/SAVP 114 9 112 111 0 8 116 115 4 97 13 118 101
    a=candidate:PT6AVLXa4tujaXc+c3WoTFJ695P1yFxqgDXWtt8OZWs 1 UHv60+BJvpK3kTLeOaa2BA UDP 0.830 <Home PC Internal IP> 27994
    a=candidate:PT6AVLXa4tujaXc+c3WoTFJ695P1yFxqgDXWtt8OZWs 2 UHv60+BJvpK3kTLeOaa2BA UDP 0.830 <Home PC Internal IP> 27995
    a=cryptoscale:1 client AES_CM_128_HMAC_SHA1_80 inline:MfWpySrr0EJoD+Er2VfrRoIAH/wTGxdcDwJ30Ov5|2^31|1:1
    a=crypto:2 AES_CM_128_HMAC_SHA1_80 inline:zXEluwyi77Ket+SzodFljIYPwz2BIKRgOh6ERSDq|2^31|1:1
    a=crypto:3 AES_CM_128_HMAC_SHA1_80 inline:caZjJk62aiXOrSxbfwmg/gphfOMSv9WbU5ojjo99|2^31
    a=maxptime:200
    a=rtpmap:114 x-msrta/16000
    a=fmtp:114 bitrate=29000
    a=rtpmap:9 G722/8000
    a=rtpmap:112 G7221/16000
    a=fmtp:112 bitrate=24000
    a=rtpmap:111 SIREN/16000
    a=fmtp:111 bitrate=16000
    a=rtpmap:0 PCMU/8000
    a=rtpmap:8 PCMA/8000
    a=rtpmap:116 AAL2-G726-32/8000
    a=rtpmap:115 x-msrta/8000
    a=fmtp:115 bitrate=11800
    a=rtpmap:4 G723/8000
    a=rtpmap:97 RED/8000
    a=rtpmap:13 CN/8000
    a=rtpmap:118 CN/16000
    a=rtpmap:101 telephone-event/8000
    a=fmtp:101 0-16
    a=encryption:required
    m=video 5682 RTP/SAVP 121 34
    a=x-caps:121 263:640:480:30.0:600000:1;4359:352:288:15.0:250000:1;8455:176:144:15.0:180000:1
    a=x-caps:34 262:352:288:15.0:250000:1;4358:176:144:15.0:180000:1
    a=candidate:31ruYXRX6agSwXuejvI/0lavrlcQzNDplIQ0+jYcm8Q 1 jLqTx68o+lFF3y/1d5PjlA UDP 0.830 <Home PC Internal IP> 5682
    a=candidate:31ruYXRX6agSwXuejvI/0lavrlcQzNDplIQ0+jYcm8Q 2 jLqTx68o+lFF3y/1d5PjlA UDP 0.830 <Home PC Internal IP> 5683
    a=cryptoscale:1 client AES_CM_128_HMAC_SHA1_80 inline:dJjjAoKhk0QvnCa9fImvUvSRhiS5GxJ/Sa6+/irw|2^31|1:1
    a=crypto:2 AES_CM_128_HMAC_SHA1_80 inline:BbjihGUdUelhvJXByio91aL/BhUSq2m8DVdRXJG9|2^31|1:1
    a=crypto:3 AES_CM_128_HMAC_SHA1_80 inline:ie6UDtLxmoROVhQLKpr89kHt0lqfkphsIN/6G1p1|2^31
    a=rtpmap:121 x-rtvc1/90000
    a=rtpmap:34 H263/90000
    a=encryption:required

    ------=_NextPart_000_0244_01CD246B.94D6D420
    Content-Type: application/sdp
    Content-Transfer-Encoding: 7bit
    Content-ID: <49bf6902f3b3489b9dc22b239ac2e453@domain.com>
    Content-Disposition: session; handling=optional

    v=0
    o=- 0 1 IN IP4 <AV Edge External IP Address>
    s=session
    c=IN IP4 <AV Edge External IP Address>
    b=CT:99980
    t=0 0
    m=audio 57981 RTP/SAVP 114 9 112 111 0 8 116 115 4 97 13 118 101
    a=ice-ufrag:PbWP
    a=ice-pwd:KrN72uUuLXrjWinJl4R27Ne2
    a=candidate:1 1 UDP 2130706431 <Home PC Internal IP> 26130 typ host
    a=candidate:1 2 UDP 2130705918 <Home PC Internal IP> 26131 typ host
    a=candidate:2 1 TCP-PASS 6556159 <AV Edge External IP Address> 52173 typ relay raddr <Home Router External IP> rport 4859
    a=candidate:2 2 TCP-PASS 6556158 <AV Edge External IP Address> 52173 typ relay raddr <Home Router External IP> rport 4859
    a=candidate:3 1 UDP 16648703 <AV Edge External IP Address> 57981 typ relay raddr <Home Router External IP> rport 32308
    a=candidate:3 2 UDP 16648702 <AV Edge External IP Address> 55335 typ relay raddr <Home Router External IP> rport 32309
    a=candidate:4 1 UDP 1694235647 <Home Router External IP> 32308 typ srflx raddr <Home PC Internal IP> rport 32308
    a=candidate:4 2 UDP 1694234110 <Home Router External IP> 32309 typ srflx raddr <Home PC Internal IP> rport 32309
    a=candidate:5 1 TCP-ACT 7076351 <AV Edge External IP Address> 52173 typ relay raddr <Home Router External IP> rport 4859
    a=candidate:5 2 TCP-ACT 7075838 <AV Edge External IP Address> 52173 typ relay raddr <Home Router External IP> rport 4859
    a=candidate:6 1 TCP-ACT 1684797439 <Home Router External IP> 4859 typ srflx raddr <Home PC Internal IP> rport 4859
    a=candidate:6 2 TCP-ACT 1684796926 <Home Router External IP> 4859 typ srflx raddr <Home PC Internal IP> rport 4859
    a=cryptoscale:1 client AES_CM_128_HMAC_SHA1_80 inline:MfWpySrr0EJoD+Er2VfrRoIAH/wTGxdcDwJ30Ov5|2^31|1:1
    a=crypto:2 AES_CM_128_HMAC_SHA1_80 inline:zXEluwyi77Ket+SzodFljIYPwz2BIKRgOh6ERSDq|2^31|1:1
    a=crypto:3 AES_CM_128_HMAC_SHA1_80 inline:caZjJk62aiXOrSxbfwmg/gphfOMSv9WbU5ojjo99|2^31
    a=maxptime:200
    a=rtcp:55335
    a=rtpmap:114 x-msrta/16000
    a=fmtp:114 bitrate=29000
    a=rtpmap:9 G722/8000
    a=rtpmap:112 G7221/16000
    a=fmtp:112 bitrate=24000
    a=rtpmap:111 SIREN/16000
    a=fmtp:111 bitrate=16000
    a=rtpmap:0 PCMU/8000
    a=rtpmap:8 PCMA/8000
    a=rtpmap:116 AAL2-G726-32/8000
    a=rtpmap:115 x-msrta/8000
    a=fmtp:115 bitrate=11800
    a=rtpmap:4 G723/8000
    a=rtpmap:97 RED/8000
    a=rtpmap:13 CN/8000
    a=rtpmap:118 CN/16000
    a=rtpmap:101 telephone-event/8000
    a=fmtp:101 0-16
    a=encryption:required
    m=video 59077 RTP/SAVP 121 34
    a=ice-ufrag:m2Qe
    a=ice-pwd:tETl/F3NiYMpb2RvNJqh+sNq
    a=x-caps:121 263:640:480:30.0:600000:1;4359:352:288:15.0:250000:1;8455:176:144:15.0:180000:1
    a=x-caps:34 262:352:288:15.0:250000:1;4358:176:144:15.0:180000:1
    a=candidate:1 1 UDP 2130706431 <Home PC Internal IP> 29198 typ host
    a=candidate:1 2 UDP 2130705918 <Home PC Internal IP> 29199 typ host
    a=candidate:2 1 TCP-PASS 6556159 <AV Edge External IP Address> 58732 typ relay raddr <Home Router External IP> rport 32593
    a=candidate:2 2 TCP-PASS 6556158 <AV Edge External IP Address> 58732 typ relay raddr <Home Router External IP> rport 32593
    a=candidate:3 1 UDP 16648703 <AV Edge External IP Address> 59077 typ relay raddr <Home Router External IP> rport 8860
    a=candidate:3 2 UDP 16648702 <AV Edge External IP Address> 52687 typ relay raddr <Home Router External IP> rport 8861
    a=candidate:4 1 UDP 1694235647 <Home Router External IP> 8860 typ srflx raddr <Home PC Internal IP> rport 8860
    a=candidate:4 2 UDP 1694234110 <Home Router External IP> 8861 typ srflx raddr <Home PC Internal IP> rport 8861
    a=candidate:5 1 TCP-ACT 7076351 <AV Edge External IP Address> 58732 typ relay raddr <Home Router External IP> rport 32593
    a=candidate:5 2 TCP-ACT 7075838 <AV Edge External IP Address> 58732 typ relay raddr <Home Router External IP> rport 32593
    a=candidate:6 1 TCP-ACT 1684797439 <Home Router External IP> 32593 typ srflx raddr <Home PC Internal IP> rport 32593
    a=candidate:6 2 TCP-ACT 1684796926 <Home Router External IP> 32593 typ srflx raddr <Home PC Internal IP> rport 32593
    a=cryptoscale:1 client AES_CM_128_HMAC_SHA1_80 inline:dJjjAoKhk0QvnCa9fImvUvSRhiS5GxJ/Sa6+/irw|2^31|1:1
    a=crypto:2 AES_CM_128_HMAC_SHA1_80 inline:BbjihGUdUelhvJXByio91aL/BhUSq2m8DVdRXJG9|2^31|1:1
    a=crypto:3 AES_CM_128_HMAC_SHA1_80 inline:ie6UDtLxmoROVhQLKpr89kHt0lqfkphsIN/6G1p1|2^31
    a=rtcp:52687
    a=rtpmap:121 x-rtvc1/90000
    a=rtpmap:34 H263/90000
    a=encryption:required

    ------=_NextPart_000_0244_01CD246B.94D6D420--


    Response Data:

    408  Request Timeout
    ms-diagnostics:  5026;reason="The request was sent to the callee's client endpoints but no further response was received.";AppUri="http%3A%2F%2Fwww.microsoft.com%2FLCS%2FDefaultRouting";client-forks="1";source="frontend.fqdn.net";OriginalPresenceState="0";CurrentPresenceState="0";MeInsideUser="No";ConversationInitiatedBy="0";SourceNetwork="0";RemotePartyCanDoIM="No"

    A80ef0198F80ef0198Fwww.microsoft.com80ef0198FLCS80ef0198FDefaultRouting";client-forks="1";source="frontend.fqdn.net";OriginalPresenceState="0";CurrentPresenceState="0";MeInsideUser="No";ConversationInitiatedBy="0";SourceNetwork="0";RemotePartyCanDoIM="No"

    A80ef0198F80ef0198Fwww.microsoft.com80ef0198FLCS80ef0198FDefaultRouting";client-forks="1";source="frontend.fqdn.net";OriginalPresenceState="0";CurrentPresenceState="0";MeInsideUser="No";ConversationInitiatedBy="0";SourceNetwork="0";RemotePartyCanDoIM="No"

    A80ef0198F80ef0198Fwww.microsoft.com80ef0198FLCS80ef0198FDefaultRouting";client-forks="1";source="frontend.fqdn.net";OriginalPresenceState="0";CurrentPresenceState="0";MeInsideUser="No";ConversationInitiatedBy="0";SourceNetwork="0";RemotePartyCanDoIM="No"

     
     Resolution:
     If this error continues to occur, please contact your network administrator. The network administrator can use a tool like winerror.exe from the Windows Resource Kit or lcserror.exe from the Office Communications Server Resource Kit in order to interpret any error codes listed above.
    Event Xml:
    <Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
      <System>
        <Provider Name="Communicator" />
        <EventID Qualifiers="16624">11</EventID>
        <Level>3</Level>
        <Task>0</Task>
        <Keywords>0x80000000000000</Keywords>
        <TimeCreated SystemTime="2012-04-27T18:48:29.000000000Z" />
        <EventRecordID>4170</EventRecordID>
        <Channel>Application</Channel>
        <Computer>homepc</Computer>
        <Security />
      </System>
      <EventData>
        <Data>Communicator</Data>
        <Data>80ef0198</Data>
        <Data>RequestUri:   sip:requested.user@domain.com
    From:         sip:requesting.user@domain.com;tag=c238bcf642
    To:           sip:requested.user@domain.com;tag=45EA2C3769C60367059330289D9E66D6
    Call-ID:      b03ea1dc6ae04299aeb771fa7043bdfb
    Content-type: multipart/alternative;boundary="----=_NextPart_000_0244_01CD246B.94D6D420";call-type=audiovideo

    ------=_NextPart_000_0244_01CD246B.94D6D420
    Content-Type: application/sdp
    Content-Transfer-Encoding: 7bit
    Content-ID: &lt;788d2c8845644258896c1df94ee541d8@domain.com&gt;
    Content-Disposition: session; handling=optional; ms-proxy-2007fallback

    v=0
    o=- 0 0 IN IP4 <Home PC Internal IP>
    s=session
    c=IN IP4 <Home PC Internal IP>
    b=CT:99980
    t=0 0
    m=audio 27994 RTP/SAVP 114 9 112 111 0 8 116 115 4 97 13 118 101
    a=candidate:PT6AVLXa4tujaXc+c3WoTFJ695P1yFxqgDXWtt8OZWs 1 UHv60+BJvpK3kTLeOaa2BA UDP 0.830 <Home PC Internal IP> 27994
    a=candidate:PT6AVLXa4tujaXc+c3WoTFJ695P1yFxqgDXWtt8OZWs 2 UHv60+BJvpK3kTLeOaa2BA UDP 0.830 <Home PC Internal IP> 27995
    a=cryptoscale:1 client AES_CM_128_HMAC_SHA1_80 inline:MfWpySrr0EJoD+Er2VfrRoIAH/wTGxdcDwJ30Ov5|2^31|1:1
    a=crypto:2 AES_CM_128_HMAC_SHA1_80 inline:zXEluwyi77Ket+SzodFljIYPwz2BIKRgOh6ERSDq|2^31|1:1
    a=crypto:3 AES_CM_128_HMAC_SHA1_80 inline:caZjJk62aiXOrSxbfwmg/gphfOMSv9WbU5ojjo99|2^31
    a=maxptime:200
    a=rtpmap:114 x-msrta/16000
    a=fmtp:114 bitrate=29000
    a=rtpmap:9 G722/8000
    a=rtpmap:112 G7221/16000
    a=fmtp:112 bitrate=24000
    a=rtpmap:111 SIREN/16000
    a=fmtp:111 bitrate=16000
    a=rtpmap:0 PCMU/8000
    a=rtpmap:8 PCMA/8000
    a=rtpmap:116 AAL2-G726-32/8000
    a=rtpmap:115 x-msrta/8000
    a=fmtp:115 bitrate=11800
    a=rtpmap:4 G723/8000
    a=rtpmap:97 RED/8000
    a=rtpmap:13 CN/8000
    a=rtpmap:118 CN/16000
    a=rtpmap:101 telephone-event/8000
    a=fmtp:101 0-16
    a=encryption:required
    m=video 5682 RTP/SAVP 121 34
    a=x-caps:121 263:640:480:30.0:600000:1;4359:352:288:15.0:250000:1;8455:176:144:15.0:180000:1
    a=x-caps:34 262:352:288:15.0:250000:1;4358:176:144:15.0:180000:1
    a=candidate:31ruYXRX6agSwXuejvI/0lavrlcQzNDplIQ0+jYcm8Q 1 jLqTx68o+lFF3y/1d5PjlA UDP 0.830 <Home PC Internal IP> 5682
    a=candidate:31ruYXRX6agSwXuejvI/0lavrlcQzNDplIQ0+jYcm8Q 2 jLqTx68o+lFF3y/1d5PjlA UDP 0.830 <Home PC Internal IP> 5683
    a=cryptoscale:1 client AES_CM_128_HMAC_SHA1_80 inline:dJjjAoKhk0QvnCa9fImvUvSRhiS5GxJ/Sa6+/irw|2^31|1:1
    a=crypto:2 AES_CM_128_HMAC_SHA1_80 inline:BbjihGUdUelhvJXByio91aL/BhUSq2m8DVdRXJG9|2^31|1:1
    a=crypto:3 AES_CM_128_HMAC_SHA1_80 inline:ie6UDtLxmoROVhQLKpr89kHt0lqfkphsIN/6G1p1|2^31
    a=rtpmap:121 x-rtvc1/90000
    a=rtpmap:34 H263/90000
    a=encryption:required

    ------=_NextPart_000_0244_01CD246B.94D6D420
    Content-Type: application/sdp
    Content-Transfer-Encoding: 7bit
    Content-ID: &lt;49bf6902f3b3489b9dc22b239ac2e453@domain.com&gt;
    Content-Disposition: session; handling=optional

    v=0
    o=- 0 1 IN IP4 <AV Edge External IP Address>
    s=session
    c=IN IP4 <AV Edge External IP Address>
    b=CT:99980
    t=0 0
    m=audio 57981 RTP/SAVP 114 9 112 111 0 8 116 115 4 97 13 118 101
    a=ice-ufrag:PbWP
    a=ice-pwd:KrN72uUuLXrjWinJl4R27Ne2
    a=candidate:1 1 UDP 2130706431 <Home PC Internal IP> 26130 typ host
    a=candidate:1 2 UDP 2130705918 <Home PC Internal IP> 26131 typ host
    a=candidate:2 1 TCP-PASS 6556159 <AV Edge External IP Address> 52173 typ relay raddr <Home Router External IP> rport 4859
    a=candidate:2 2 TCP-PASS 6556158 <AV Edge External IP Address> 52173 typ relay raddr <Home Router External IP> rport 4859
    a=candidate:3 1 UDP 16648703 <AV Edge External IP Address> 57981 typ relay raddr <Home Router External IP> rport 32308
    a=candidate:3 2 UDP 16648702 <AV Edge External IP Address> 55335 typ relay raddr <Home Router External IP> rport 32309
    a=candidate:4 1 UDP 1694235647 <Home Router External IP> 32308 typ srflx raddr <Home PC Internal IP> rport 32308
    a=candidate:4 2 UDP 1694234110 <Home Router External IP> 32309 typ srflx raddr <Home PC Internal IP> rport 32309
    a=candidate:5 1 TCP-ACT 7076351 <AV Edge External IP Address> 52173 typ relay raddr <Home Router External IP> rport 4859
    a=candidate:5 2 TCP-ACT 7075838 <AV Edge External IP Address> 52173 typ relay raddr <Home Router External IP> rport 4859
    a=candidate:6 1 TCP-ACT 1684797439 <Home Router External IP> 4859 typ srflx raddr <Home PC Internal IP> rport 4859
    a=candidate:6 2 TCP-ACT 1684796926 <Home Router External IP> 4859 typ srflx raddr <Home PC Internal IP> rport 4859
    a=cryptoscale:1 client AES_CM_128_HMAC_SHA1_80 inline:MfWpySrr0EJoD+Er2VfrRoIAH/wTGxdcDwJ30Ov5|2^31|1:1
    a=crypto:2 AES_CM_128_HMAC_SHA1_80 inline:zXEluwyi77Ket+SzodFljIYPwz2BIKRgOh6ERSDq|2^31|1:1
    a=crypto:3 AES_CM_128_HMAC_SHA1_80 inline:caZjJk62aiXOrSxbfwmg/gphfOMSv9WbU5ojjo99|2^31
    a=maxptime:200
    a=rtcp:55335
    a=rtpmap:114 x-msrta/16000
    a=fmtp:114 bitrate=29000
    a=rtpmap:9 G722/8000
    a=rtpmap:112 G7221/16000
    a=fmtp:112 bitrate=24000
    a=rtpmap:111 SIREN/16000
    a=fmtp:111 bitrate=16000
    a=rtpmap:0 PCMU/8000
    a=rtpmap:8 PCMA/8000
    a=rtpmap:116 AAL2-G726-32/8000
    a=rtpmap:115 x-msrta/8000
    a=fmtp:115 bitrate=11800
    a=rtpmap:4 G723/8000
    a=rtpmap:97 RED/8000
    a=rtpmap:13 CN/8000
    a=rtpmap:118 CN/16000
    a=rtpmap:101 telephone-event/8000
    a=fmtp:101 0-16
    a=encryption:required
    m=video 59077 RTP/SAVP 121 34
    a=ice-ufrag:m2Qe
    a=ice-pwd:tETl/F3NiYMpb2RvNJqh+sNq
    a=x-caps:121 263:640:480:30.0:600000:1;4359:352:288:15.0:250000:1;8455:176:144:15.0:180000:1
    a=x-caps:34 262:352:288:15.0:250000:1;4358:176:144:15.0:180000:1
    a=candidate:1 1 UDP 2130706431 <Home PC Internal IP> 29198 typ host
    a=candidate:1 2 UDP 2130705918 <Home PC Internal IP> 29199 typ host
    a=candidate:2 1 TCP-PASS 6556159 <AV Edge External IP Address> 58732 typ relay raddr <Home Router External IP> rport 32593
    a=candidate:2 2 TCP-PASS 6556158 <AV Edge External IP Address> 58732 typ relay raddr <Home Router External IP> rport 32593
    a=candidate:3 1 UDP 16648703 <AV Edge External IP Address> 59077 typ relay raddr <Home Router External IP> rport 8860
    a=candidate:3 2 UDP 16648702 <AV Edge External IP Address> 52687 typ relay raddr <Home Router External IP> rport 8861
    a=candidate:4 1 UDP 1694235647 <Home Router External IP> 8860 typ srflx raddr <Home PC Internal IP> rport 8860
    a=candidate:4 2 UDP 1694234110 <Home Router External IP> 8861 typ srflx raddr <Home PC Internal IP> rport 8861
    a=candidate:5 1 TCP-ACT 7076351 <AV Edge External IP Address> 58732 typ relay raddr <Home Router External IP> rport 32593
    a=candidate:5 2 TCP-ACT 7075838 <AV Edge External IP Address> 58732 typ relay raddr <Home Router External IP> rport 32593
    a=candidate:6 1 TCP-ACT 1684797439 <Home Router External IP> 32593 typ srflx raddr <Home PC Internal IP> rport 32593
    a=candidate:6 2 TCP-ACT 1684796926 <Home Router External IP> 32593 typ srflx raddr <Home PC Internal IP> rport 32593
    a=cryptoscale:1 client AES_CM_128_HMAC_SHA1_80 inline:dJjjAoKhk0QvnCa9fImvUvSRhiS5GxJ/Sa6+/irw|2^31|1:1
    a=crypto:2 AES_CM_128_HMAC_SHA1_80 inline:BbjihGUdUelhvJXByio91aL/BhUSq2m8DVdRXJG9|2^31|1:1
    a=crypto:3 AES_CM_128_HMAC_SHA1_80 inline:ie6UDtLxmoROVhQLKpr89kHt0lqfkphsIN/6G1p1|2^31
    a=rtcp:52687
    a=rtpmap:121 x-rtvc1/90000
    a=rtpmap:34 H263/90000
    a=encryption:required

    ------=_NextPart_000_0244_01CD246B.94D6D420--


    Response Data:

    408  Request Timeout
    ms-diagnostics:  5026;reason="The request was sent to the callee's client endpoints but no further response was received.";AppUri="http%3A%2F%2Fwww.microsoft.com%2FLCS%2FDefaultRouting";client-forks="1";source="frontend.fqdn.net";OriginalPresenceState="0";CurrentPresenceState="0";MeInsideUser="No";ConversationInitiatedBy="0";SourceNetwork="0";RemotePartyCanDoIM="No"

    </Data>
      </EventData>
    </Event>

    The most obvious error that stands out is the 5026;reason="The request was sent to the callee's client endpoints but no further response was received error but we ensured that port 443 and 3478 is open.

    Any ideas what to do next?


    • Edited by Pegoto Friday, April 27, 2012 7:17 PM Fixed port from 3078 to 3478.
    Friday, April 27, 2012 7:15 PM

All replies

  • Hi, I have not read the logs, but normal this problems comes from micsonfuguration of firewall or edge server. Be sure that all ports are open internal and external like described in the Lync Workflow poster.

    http://www.microsoft.com/en-us/download/details.aspx?id=6797


    regards Holger Technical Specialist UC

    Saturday, April 28, 2012 8:53 AM
  • Thanks for the response. We have ensured that all ports are open where firewalls are. We did traces and did not see anything being blocked on any firewalls that are in the way and the Edge servers has the correct static routes.

    Like I said, with a user outside and a user inside, conferencing works, desktop sharing and file transfers works, its just p2p.

    Saturday, April 28, 2012 3:08 PM
  • You definitly have some routing and/or firewall issues. From your traces: "The request was sent to the callee's client endpoints but no further response was received"

    This means that one of the clients does start a conversation with the other peer, but never receives a message back.  This can be due to a firewall blocking the connections or network routing issues.

    The routing to the FE server should be ok, because conferencing is working correct.

    Do you have setup the routes on the Edge correct?

    May be you could see a little bit more with wireshark.


    regards Holger Technical Specialist UC

    Saturday, April 28, 2012 8:55 PM
  • Hi,

    When one user is internal and one user is external , they will attempt peer to peer. The external user will hit TCP 5061 to the Access Edge Server and will be provided with either UDP 3478 or TCP 443 for the Audio/Video Edge. UDP 3478 is preferred even if the connection test for TCP 443 and UDP 3478 were successful in testing. Because this is technically peer to peer, the internal user will NOT connect to the MCU on the Front End but will instead connect directly to the A/V Edge Server’s Internal NIC over UDP 3478 or TCP 443 as well.  The Front End A/V MCU will not be used in this scenario.  When you add a 3rd person to the conversation, the external user will connect to the Front End Server’s A/V MCU in which the A/V Edge will proxy this data for the user, and the internal users will connect to the Front End A/V MCU instead of the Internal Edge NIC.

    You can do a netstat -an to see your server listening on UDP 3478 and utilize netcat which can attempt telnet to UDP by using netcat -u host 3478.

    Here is a good article about Lync server ports and audio/media negotiation for you to understand the media connection more clearly.
    http://www.shudnow.net/2010/12/06/lync-server-2010-port-ranges-and-audiomedia-negotiation/

    Regards,
    Kent

    Monday, April 30, 2012 6:54 AM
  • Hi Pegoto,

    Is there any update on the issue?

    Regards,

    Kent

    Wednesday, May 09, 2012 1:08 AM
  • No resolution. We allowed all traffic and it was still not working. We decided that we will just just the meet me now option to move it p2p to a conference which moves onto the servers as a work around.

    Wednesday, May 09, 2012 11:27 PM
  • Thanks for that info. It seems like i will have to find a resolution to this after all due to a 3rd party application we might be using.  I did a call with an internal person which failed as expected and when I looked at the monitoring server i found this error and the part that stands out that is wrong is in bold:

    1033; reason="Previous hop server component did not report diagnostic information"; Domain="domain.com"; PeerServer="owa.domain.com"; source="frontendlync.domain.local"

    Why would the peerserver be our Outlook web Access URL? Where would I find this, what seems to me, misconfiguration?

    • Proposed as answer by Kent-Huang Tuesday, May 22, 2012 7:52 AM
    • Unproposed as answer by Kent-Huang Tuesday, May 22, 2012 7:52 AM
    Tuesday, May 15, 2012 9:39 PM
  • Hi,

    I am not sure why would the peerserver be Outlook web Access URL. When doing Lync call, the media traffic should not be through Mediation Server.

    After researching, please make sure the ports range 1024-65535 are allowed on your client.

    Regards,

    Kent

    Tuesday, May 22, 2012 7:59 AM