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Fax using T.38 through SPA-3201 PSTN Gateway

Discussion in '3CX Phone System - General' started by rydog, Feb 24, 2010.

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  1. rydog

    Joined:
    Feb 24, 2010
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    Ive been pulling out my hair over this issue.

    I have the 3cx phone system setup on a VPS with a public IP. I have a SPA-3102 setup on a dsl line behind a firewall. I went through the 3cx setup as described in online tutorials. I configured the SPA-3201 as described in the tutorial as well. I can make outgoing voice calls through the PSTN gateway but once i try to fax something the re-invite fails with 488 not acceptable here error. Below is a packet trace:

    111.111.111.111 = My 3cx Public IP
    sip.domain.com = My 3cx FQDN

    222.222.222.222 = My DSL Public IP
    dydns.homeip.net = My DSL FQDN


    SIP/2.0 100 Trying
    To: <sip:5555555@dydns.homeip.net:5062>
    From: <sip:10002@111.111.111.111:5060>;tag=6e7b2624
    Call-ID: Njg3ZWNjNzc3OGFlZTU1OTlhNmFjOGIxOGQ4ZGI2MWM.
    CSeq: 1 INVITE
    Via: SIP/2.0/UDP 111.111.111.111:5060;branch=z9hG4bK-d8754z-187efe33c6777752-1---d8754z-
    Server: Linksys/SPA3102-5.1.10(GW)
    Content-Length: 0

    SIP/2.0 180 Ringing
    To: <sip:5555555@dydns.homeip.net:5062>;tag=5a14999dae8db687i1
    From: <sip:10002@111.111.111.111:5060>;tag=6e7b2624
    Call-ID: Njg3ZWNjNzc3OGFlZTU1OTlhNmFjOGIxOGQ4ZGI2MWM.
    CSeq: 1 INVITE
    Via: SIP/2.0/UDP 111.111.111.111:5060;branch=z9hG4bK-d8754z-187efe33c6777752-1---d8754z-
    Contact: SPA-3102 <sip:5555555@222.222.222.222:49298>
    Server: Linksys/SPA3102-5.1.10(GW)
    Remote-Party-ID: SPA-3102 <sip:10002@sip.domain.com>;screen=yes;party=called
    Content-Length: 0

    SIP/2.0 200 OK
    To: <sip:5555555@dydns.homeip.net:5062>;tag=5a14999dae8db687i1
    From: <sip:10002@111.111.111.111:5060>;tag=6e7b2624
    Call-ID: Njg3ZWNjNzc3OGFlZTU1OTlhNmFjOGIxOGQ4ZGI2MWM.
    CSeq: 1 INVITE
    Via: SIP/2.0/UDP 111.111.111.111:5060;branch=z9hG4bK-d8754z-187efe33c6777752-1---d8754z-
    Contact: SPA-3102 <sip:5555555@222.222.222.222:49298>
    Server: Linksys/SPA3102-5.1.10(GW)
    Remote-Party-ID: SPA-3102 <sip:10002@sip.domain.com>;screen=yes;party=called
    Content-Length: 293
    Allow: ACK, BYE, CANCEL, INFO, INVITE, NOTIFY, OPTIONS, PRACK, REFER
    Supported: 100rel, x-sipura, replaces
    Content-Type: application/sdp

    v=0
    o=- 6401 6401 IN IP4 222.222.222.222
    s=-
    c=IN IP4 222.222.222.222
    t=0 0
    m=audio 16384 RTP/AVP 8 100 101
    a=rtpmap:8 PCMA/8000
    a=rtpmap:100 NSE/8000
    a=fmtp:100 192-193
    a=rtpmap:101 telephone-event/8000
    a=fmtp:101 0-15
    a=ptime:20
    a=sendrecv
    m=audio 0 RTP/AVP 0
    m=image 0 udptl t38
    ACK sip:5555555@222.222.222.222:49298 SIP/2.0
    Via: SIP/2.0/UDP 111.111.111.111:5060;branch=z9hG4bK-d8754z-8a79f075442fcc3e-1---d8754z-;rport
    Max-Forwards: 70
    Contact: <sip:10002@111.111.111.111:5060>
    To: <sip:5555555@dydns.homeip.net:5062>;tag=5a14999dae8db687i1
    From: <sip:10002@111.111.111.111:5060>;tag=6e7b2624
    Call-ID: Njg3ZWNjNzc3OGFlZTU1OTlhNmFjOGIxOGQ4ZGI2MWM.
    CSeq: 1 ACK
    User-Agent: 3CXPhoneSystem 8.0.10708.0
    Content-Length: 0

    INVITE sip:5555555@222.222.222.222:49298 SIP/2.0
    Via: SIP/2.0/UDP 111.111.111.111:5060;branch=z9hG4bK-d8754z-f76eb0099b692072-1---d8754z-;rport
    Max-Forwards: 70
    Contact: <sip:10002@111.111.111.111:5060>
    To: <sip:5555555@dydns.homeip.net:5062>;tag=5a14999dae8db687i1
    From: <sip:10002@111.111.111.111:5060>;tag=6e7b2624
    Call-ID: Njg3ZWNjNzc3OGFlZTU1OTlhNmFjOGIxOGQ4ZGI2MWM.
    CSeq: 2 INVITE
    Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REGISTER, SUBSCRIBE, NOTIFY, REFER, INFO, MESSAGE
    Content-Type: application/sdp
    User-Agent: 3CXPhoneSystem 8.0.10708.0
    Content-Length: 301

    v=0
    o=3cxPS 165356240896 178174033922 IN IP4 111.111.111.111
    s=3cxPS Audio call
    c=IN IP4 111.111.111.111
    t=0 0
    m=image 10000 udptl t38
    a=T38FaxVersion:1
    a=T38MaxBitRate:14400
    a=T38FaxRateManagement:transferredTCF
    a=T38FaxMaxBuffer:10500
    a=T38FaxMaxDatagram:1500
    a=T38FaxUdpEC:t38UDPRedundancy
    SIP/2.0 488 Not Acceptable Here
    To: <sip:5555555@dydns.homeip.net:5062>;tag=5a14999dae8db687i1
    From: <sip:10002@111.111.111.111:5060>;tag=6e7b2624
    Call-ID: Njg3ZWNjNzc3OGFlZTU1OTlhNmFjOGIxOGQ4ZGI2MWM.
    CSeq: 2 INVITE
    Via: SIP/2.0/UDP 111.111.111.111:5060;branch=z9hG4bK-d8754z-f76eb0099b692072-1---d8754z-
    Contact: SPA-3102 <sip:5555555@222.222.222.222:49298>
    Warning: 304 spa "Media type not available"
    Server: Linksys/SPA3102-5.1.10(GW)
    Content-Length: 0

    ACK sip:5555555@222.222.222.222:49298 SIP/2.0
    Via: SIP/2.0/UDP 111.111.111.111:5060;branch=z9hG4bK-d8754z-f76eb0099b692072-1---d8754z-;rport
    Max-Forwards: 70
    To: <sip:5555555@dydns.homeip.net:5062>;tag=5a14999dae8db687i1
    From: <sip:10002@111.111.111.111:5060>;tag=6e7b2624
    Call-ID: Njg3ZWNjNzc3OGFlZTU1OTlhNmFjOGIxOGQ4ZGI2MWM.
    CSeq: 2 ACK
    Content-Length: 0

    BYE sip:5555555@222.222.222.222:49298 SIP/2.0
    Via: SIP/2.0/UDP 111.111.111.111:5060;branch=z9hG4bK-d8754z-9e780f2ec20f5e47-1---d8754z-;rport
    Max-Forwards: 70
    Contact: <sip:10002@111.111.111.111:5060>
    To: <sip:5555555@dydns.homeip.net:5062>;tag=5a14999dae8db687i1
    From: <sip:10002@111.111.111.111:5060>;tag=6e7b2624
    Call-ID: Njg3ZWNjNzc3OGFlZTU1OTlhNmFjOGIxOGQ4ZGI2MWM.
    CSeq: 3 BYE
    User-Agent: 3CXPhoneSystem 8.0.10708.0
    Reason: SIP;description="Application Rejected Sdp(usually no common codec)"
    Content-Length: 0

    SIP/2.0 200 OK
    To: <sip:5555555@dydns.homeip.net:5062>;tag=5a14999dae8db687i1
    From: <sip:10002@111.111.111.111:5060>;tag=6e7b2624
    Call-ID: Njg3ZWNjNzc3OGFlZTU1OTlhNmFjOGIxOGQ4ZGI2MWM.
    CSeq: 3 BYE
    Via: SIP/2.0/UDP 111.111.111.111:5060;branch=z9hG4bK-d8754z-9e780f2ec20f5e47-1---d8754z-
    Server: Linksys/SPA3102-5.1.10(GW)
    Content-Length: 0

    SIP/2.0 100 Trying
    To: <sip:5555555@dydns.homeip.net:5062>
    From: <sip:10002@111.111.111.111:5060>;tag=127c3025
    Call-ID: NDdhZGZlNGQzNmI3YjI4OWZiODQ2NTNlY2YzMjU2M2I.
    CSeq: 1 INVITE
    Via: SIP/2.0/UDP 111.111.111.111:5060;branch=z9hG4bK-d8754z-d64e2d76e905395f-1---d8754z-
    Server: Linksys/SPA3102-5.1.10(GW)
    Content-Length: 0

    SIP/2.0 180 Ringing
    To: <sip:5555555@dydns.homeip.net:5062>;tag=66d8024c88aec889i1
    From: <sip:10002@111.111.111.111:5060>;tag=127c3025
    Call-ID: NDdhZGZlNGQzNmI3YjI4OWZiODQ2NTNlY2YzMjU2M2I.
    CSeq: 1 INVITE
    Via: SIP/2.0/UDP 111.111.111.111:5060;branch=z9hG4bK-d8754z-d64e2d76e905395f-1---d8754z-
    Contact: SPA-3102 <sip:5555555@222.222.222.222:49298>
    Server: Linksys/SPA3102-5.1.10(GW)
    Remote-Party-ID: SPA-3102 <sip:10002@sip.domain.com>;screen=yes;party=called
    Content-Length: 0

    SIP/2.0 200 OK
    To: <sip:5555555@dydns.homeip.net:5062>;tag=66d8024c88aec889i1
    From: <sip:10002@111.111.111.111:5060>;tag=127c3025
    Call-ID: NDdhZGZlNGQzNmI3YjI4OWZiODQ2NTNlY2YzMjU2M2I.
    CSeq: 1 INVITE
    Via: SIP/2.0/UDP 111.111.111.111:5060;branch=z9hG4bK-d8754z-d64e2d76e905395f-1---d8754z-
    Contact: SPA-3102 <sip:5555555@222.222.222.222:49298>
    Server: Linksys/SPA3102-5.1.10(GW)
    Remote-Party-ID: SPA-3102 <sip:10002@sip.domain.com>;screen=yes;party=called
    Content-Length: 295
    Allow: ACK, BYE, CANCEL, INFO, INVITE, NOTIFY, OPTIONS, PRACK, REFER
    Supported: 100rel, x-sipura, replaces
    Content-Type: application/sdp

    v=0
    o=- 37862 37862 IN IP4 222.222.222.222
    s=-
    c=IN IP4 222.222.222.222
    t=0 0
    m=audio 16388 RTP/AVP 8 100 101
    a=rtpmap:8 PCMA/8000
    a=rtpmap:100 NSE/8000
    a=fmtp:100 192-193
    a=rtpmap:101 telephone-event/8000
    a=fmtp:101 0-15
    a=ptime:20
    a=sendrecv
    m=audio 0 RTP/AVP 0
    m=image 0 udptl t38
    ACK sip:5555555@222.222.222.222:49298 SIP/2.0
    Via: SIP/2.0/UDP 111.111.111.111:5060;branch=z9hG4bK-d8754z-6265da468d686210-1---d8754z-;rport
    Max-Forwards: 70
    Contact: <sip:10002@111.111.111.111:5060>
    To: <sip:5555555@dydns.homeip.net:5062>;tag=66d8024c88aec889i1
    From: <sip:10002@111.111.111.111:5060>;tag=127c3025
    Call-ID: NDdhZGZlNGQzNmI3YjI4OWZiODQ2NTNlY2YzMjU2M2I.
    CSeq: 1 ACK
    User-Agent: 3CXPhoneSystem 8.0.10708.0
    Content-Length: 0

    INVITE sip:5555555@222.222.222.222:49298 SIP/2.0
    Via: SIP/2.0/UDP 111.111.111.111:5060;branch=z9hG4bK-d8754z-0b5bd90d850d1648-1---d8754z-;rport
    Max-Forwards: 70
    Contact: <sip:10002@111.111.111.111:5060>
    To: <sip:5555555@dydns.homeip.net:5062>;tag=66d8024c88aec889i1
    From: <sip:10002@111.111.111.111:5060>;tag=127c3025
    Call-ID: NDdhZGZlNGQzNmI3YjI4OWZiODQ2NTNlY2YzMjU2M2I.
    CSeq: 2 INVITE
    Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REGISTER, SUBSCRIBE, NOTIFY, REFER, INFO, MESSAGE
    Content-Type: application/sdp
    User-Agent: 3CXPhoneSystem 8.0.10708.0
    Content-Length: 300

    v=0
    o=3cxPS 249460424704 23689428994 IN IP4 111.111.111.111
    s=3cxPS Audio call
    c=IN IP4 111.111.111.111
    t=0 0
    m=image 10000 udptl t38
    a=T38FaxVersion:1
    a=T38MaxBitRate:14400
    a=T38FaxRateManagement:transferredTCF
    a=T38FaxMaxBuffer:10500
    a=T38FaxMaxDatagram:1500
    a=T38FaxUdpEC:t38UDPRedundancy
    SIP/2.0 488 Not Acceptable Here
    To: <sip:5555555@dydns.homeip.net:5062>;tag=66d8024c88aec889i1
    From: <sip:10002@111.111.111.111:5060>;tag=127c3025
    Call-ID: NDdhZGZlNGQzNmI3YjI4OWZiODQ2NTNlY2YzMjU2M2I.
    CSeq: 2 INVITE
    Via: SIP/2.0/UDP 111.111.111.111:5060;branch=z9hG4bK-d8754z-0b5bd90d850d1648-1---d8754z-
    Contact: SPA-3102 <sip:5555555@222.222.222.222:49298>
    Warning: 304 spa "Media type not available"
    Server: Linksys/SPA3102-5.1.10(GW)
    Content-Length: 0

    ACK sip:5555555@222.222.222.222:49298 SIP/2.0
    Via: SIP/2.0/UDP 111.111.111.111:5060;branch=z9hG4bK-d8754z-0b5bd90d850d1648-1---d8754z-;rport
    Max-Forwards: 70
    To: <sip:5555555@dydns.homeip.net:5062>;tag=66d8024c88aec889i1
    From: <sip:10002@111.111.111.111:5060>;tag=127c3025
    Call-ID: NDdhZGZlNGQzNmI3YjI4OWZiODQ2NTNlY2YzMjU2M2I.
    CSeq: 2 ACK
    Content-Length: 0

    BYE sip:5555555@222.222.222.222:49298 SIP/2.0
    Via: SIP/2.0/UDP 111.111.111.111:5060;branch=z9hG4bK-d8754z-a04cb43cfc33621b-1---d8754z-;rport
    Max-Forwards: 70
    Contact: <sip:10002@111.111.111.111:5060>
    To: <sip:5555555@dydns.homeip.net:5062>;tag=66d8024c88aec889i1
    From: <sip:10002@111.111.111.111:5060>;tag=127c3025
    Call-ID: NDdhZGZlNGQzNmI3YjI4OWZiODQ2NTNlY2YzMjU2M2I.
    CSeq: 3 BYE
    User-Agent: 3CXPhoneSystem 8.0.10708.0
    Reason: SIP;description="Application Rejected Sdp(usually no common codec)"
    Content-Length: 0

    SIP/2.0 200 OK
    To: <sip:5555555@dydns.homeip.net:5062>;tag=66d8024c88aec889i1
    From: <sip:10002@111.111.111.111:5060>;tag=127c3025
    Call-ID: NDdhZGZlNGQzNmI3YjI4OWZiODQ2NTNlY2YzMjU2M2I.
    CSeq: 3 BYE
    Via: SIP/2.0/UDP 111.111.111.111:5060;branch=z9hG4bK-d8754z-a04cb43cfc33621b-1---d8754z-
    Server: Linksys/SPA3102-5.1.10(GW)
    Content-Length: 0

    SIP/2.0 100 Trying
    To: <sip:5555555@dydns.homeip.net:5062>
    From: <sip:10002@111.111.111.111:5060>;tag=8f0dd946
    Call-ID: ZTljMmQ2MmY4NzllYWNkN2I4ODMzZDFiMDNmYmJiZjM.
    CSeq: 1 INVITE
    Via: SIP/2.0/UDP 111.111.111.111:5060;branch=z9hG4bK-d8754z-8946d77ad55ed043-1---d8754z-
    Server: Linksys/SPA3102-5.1.10(GW)
    Content-Length: 0

    SIP/2.0 180 Ringing
    To: <sip:5555555@dydns.homeip.net:5062>;tag=c74a86f3b22e5e60i1
    From: <sip:10002@111.111.111.111:5060>;tag=8f0dd946
    Call-ID: ZTljMmQ2MmY4NzllYWNkN2I4ODMzZDFiMDNmYmJiZjM.
    CSeq: 1 INVITE
    Via: SIP/2.0/UDP 111.111.111.111:5060;branch=z9hG4bK-d8754z-8946d77ad55ed043-1---d8754z-
    Contact: SPA-3102 <sip:5555555@222.222.222.222:49298>
    Server: Linksys/SPA3102-5.1.10(GW)
    Remote-Party-ID: SPA-3102 <sip:10002@sip.domain.com>;screen=yes;party=called
    Content-Length: 0

    SIP/2.0 200 OK
    To: <sip:5555555@dydns.homeip.net:5062>;tag=c74a86f3b22e5e60i1
    From: <sip:10002@111.111.111.111:5060>;tag=8f0dd946
    Call-ID: ZTljMmQ2MmY4NzllYWNkN2I4ODMzZDFiMDNmYmJiZjM.
    CSeq: 1 INVITE
    Via: SIP/2.0/UDP 111.111.111.111:5060;branch=z9hG4bK-d8754z-8946d77ad55ed043-1---d8754z-
    Contact: SPA-3102 <sip:5555555@222.222.222.222:49298>
    Server: Linksys/SPA3102-5.1.10(GW)
    Remote-Party-ID: SPA-3102 <sip:10002@sip.domain.com>;screen=yes;party=called
    Content-Length: 295
    Allow: ACK, BYE, CANCEL, INFO, INVITE, NOTIFY, OPTIONS, PRACK, REFER
    Supported: 100rel, x-sipura, replaces
    Content-Type: application/sdp

    v=0
    o=- 48696 48696 IN IP4 222.222.222.222
    s=-
    c=IN IP4 222.222.222.222
    t=0 0
    m=audio 16384 RTP/AVP 8 100 101
    a=rtpmap:8 PCMA/8000
    a=rtpmap:100 NSE/8000
    a=fmtp:100 192-193
    a=rtpmap:101 telephone-event/8000
    a=fmtp:101 0-15
    a=ptime:20
    a=sendrecv
    m=audio 0 RTP/AVP 0
    m=image 0 udptl t38
    ACK sip:5555555@222.222.222.222:49298 SIP/2.0
    Via: SIP/2.0/UDP 111.111.111.111:5060;branch=z9hG4bK-d8754z-016d7a664527ca5a-1---d8754z-;rport
    Max-Forwards: 70
    Contact: <sip:10002@111.111.111.111:5060>
    To: <sip:5555555@dydns.homeip.net:5062>;tag=c74a86f3b22e5e60i1
    From: <sip:10002@111.111.111.111:5060>;tag=8f0dd946
    Call-ID: ZTljMmQ2MmY4NzllYWNkN2I4ODMzZDFiMDNmYmJiZjM.
    CSeq: 1 ACK
    User-Agent: 3CXPhoneSystem 8.0.10708.0
    Content-Length: 0

    INVITE sip:5555555@222.222.222.222:49298 SIP/2.0
    Via: SIP/2.0/UDP 111.111.111.111:5060;branch=z9hG4bK-d8754z-2447206d6044c018-1---d8754z-;rport
    Max-Forwards: 70
    Contact: <sip:10002@111.111.111.111:5060>
    To: <sip:5555555@dydns.homeip.net:5062>;tag=c74a86f3b22e5e60i1
    From: <sip:10002@111.111.111.111:5060>;tag=8f0dd946
    Call-ID: ZTljMmQ2MmY4NzllYWNkN2I4ODMzZDFiMDNmYmJiZjM.
    CSeq: 2 INVITE
    Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REGISTER, SUBSCRIBE, NOTIFY, REFER, INFO, MESSAGE
    Content-Type: application/sdp
    User-Agent: 3CXPhoneSystem 8.0.10708.0
    Content-Length: 301

    v=0
    o=3cxPS 383023841280 114168954882 IN IP4 111.111.111.111
    s=3cxPS Audio call
    c=IN IP4 111.111.111.111
    t=0 0
    m=image 10000 udptl t38
    a=T38FaxVersion:1
    a=T38MaxBitRate:14400
    a=T38FaxRateManagement:transferredTCF
    a=T38FaxMaxBuffer:10500
    a=T38FaxMaxDatagram:1500
    a=T38FaxUdpEC:t38UDPRedundancy
    SIP/2.0 488 Not Acceptable Here
    To: <sip:5555555@dydns.homeip.net:5062>;tag=c74a86f3b22e5e60i1
    From: <sip:10002@111.111.111.111:5060>;tag=8f0dd946
    Call-ID: ZTljMmQ2MmY4NzllYWNkN2I4ODMzZDFiMDNmYmJiZjM.
    CSeq: 2 INVITE
    Via: SIP/2.0/UDP 111.111.111.111:5060;branch=z9hG4bK-d8754z-2447206d6044c018-1---d8754z-
    Contact: SPA-3102 <sip:5555555@222.222.222.222:49298>
    Warning: 304 spa "Media type not available"
    Server: Linksys/SPA3102-5.1.10(GW)
    Content-Length: 0

    ACK sip:5555555@222.222.222.222:49298 SIP/2.0
    Via: SIP/2.0/UDP 111.111.111.111:5060;branch=z9hG4bK-d8754z-2447206d6044c018-1---d8754z-;rport
    Max-Forwards: 70
    To: <sip:5555555@dydns.homeip.net:5062>;tag=c74a86f3b22e5e60i1
    From: <sip:10002@111.111.111.111:5060>;tag=8f0dd946
    Call-ID: ZTljMmQ2MmY4NzllYWNkN2I4ODMzZDFiMDNmYmJiZjM.
    CSeq: 2 ACK
    Content-Length: 0

    BYE sip:5555555@222.222.222.222:49298 SIP/2.0
    Via: SIP/2.0/UDP 111.111.111.111:5060;branch=z9hG4bK-d8754z-06697609e662ec68-1---d8754z-;rport
    Max-Forwards: 70
    Contact: <sip:10002@111.111.111.111:5060>
    To: <sip:5555555@dydns.homeip.net:5062>;tag=c74a86f3b22e5e60i1
    From: <sip:10002@111.111.111.111:5060>;tag=8f0dd946
    Call-ID: ZTljMmQ2MmY4NzllYWNkN2I4ODMzZDFiMDNmYmJiZjM.
    CSeq: 3 BYE
    User-Agent: 3CXPhoneSystem 8.0.10708.0
    Reason: SIP;description="Application Rejected Sdp(usually no common codec)"
    Content-Length: 0

    SIP/2.0 200 OK
    To: <sip:5555555@dydns.homeip.net:5062>;tag=c74a86f3b22e5e60i1
    From: <sip:10002@111.111.111.111:5060>;tag=8f0dd946
    Call-ID: ZTljMmQ2MmY4NzllYWNkN2I4ODMzZDFiMDNmYmJiZjM.
    CSeq: 3 BYE
    Via: SIP/2.0/UDP 111.111.111.111:5060;branch=z9hG4bK-d8754z-06697609e662ec68-1---d8754z-
    Server: Linksys/SPA3102-5.1.10(GW)
    Content-Length: 0

    SIP/2.0 100 Trying
    To: <sip:5555555@dydns.homeip.net:5062>
    From: <sip:10002@111.111.111.111:5060>;tag=3e035e07
    Call-ID: ZDIxMDcwOTY4ZmFmZmViNWYzMTFhNmFlZjFkNTE1ZjQ.
    CSeq: 1 INVITE
    Via: SIP/2.0/UDP 111.111.111.111:5060;branch=z9hG4bK-d8754z-a222e55d195c005c-1---d8754z-
    Server: Linksys/SPA3102-5.1.10(GW)
    Content-Length: 0

    SIP/2.0 180 Ringing
    To: <sip:5555555@dydns.homeip.net:5062>;tag=36bea03a2fb886edi1
    From: <sip:10002@111.111.111.111:5060>;tag=3e035e07
    Call-ID: ZDIxMDcwOTY4ZmFmZmViNWYzMTFhNmFlZjFkNTE1ZjQ.
    CSeq: 1 INVITE
    Via: SIP/2.0/UDP 111.111.111.111:5060;branch=z9hG4bK-d8754z-a222e55d195c005c-1---d8754z-
    Contact: SPA-3102 <sip:5555555@222.222.222.222:49298>
    Server: Linksys/SPA3102-5.1.10(GW)
    Remote-Party-ID: SPA-3102 <sip:10002@sip.domain.com>;screen=yes;party=called
    Content-Length: 0

    SIP/2.0 200 OK
    To: <sip:5555555@dydns.homeip.net:5062>;tag=36bea03a2fb886edi1
    From: <sip:10002@111.111.111.111:5060>;tag=3e035e07
    Call-ID: ZDIxMDcwOTY4ZmFmZmViNWYzMTFhNmFlZjFkNTE1ZjQ.
    CSeq: 1 INVITE
    Via: SIP/2.0/UDP 111.111.111.111:5060;branch=z9hG4bK-d8754z-a222e55d195c005c-1---d8754z-
    Contact: SPA-3102 <sip:5555555@222.222.222.222:49298>
    Server: Linksys/SPA3102-5.1.10(GW)
    Remote-Party-ID: SPA-3102 <sip:10002@sip.domain.com>;screen=yes;party=called
    Content-Length: 295
    Allow: ACK, BYE, CANCEL, INFO, INVITE, NOTIFY, OPTIONS, PRACK, REFER
    Supported: 100rel, x-sipura, replaces
    Content-Type: application/sdp

    v=0
    o=- 67424 67424 IN IP4 222.222.222.222
    s=-
    c=IN IP4 222.222.222.222
    t=0 0
    m=audio 16388 RTP/AVP 8 100 101
    a=rtpmap:8 PCMA/8000
    a=rtpmap:100 NSE/8000
    a=fmtp:100 192-193
    a=rtpmap:101 telephone-event/8000
    a=fmtp:101 0-15
    a=ptime:20
    a=sendrecv
    m=audio 0 RTP/AVP 0
    m=image 0 udptl t38
    ACK sip:5555555@222.222.222.222:49298 SIP/2.0
    Via: SIP/2.0/UDP 111.111.111.111:5060;branch=z9hG4bK-d8754z-0420d82e1906ad41-1---d8754z-;rport
    Max-Forwards: 70
    Contact: <sip:10002@111.111.111.111:5060>
    To: <sip:5555555@dydns.homeip.net:5062>;tag=36bea03a2fb886edi1
    From: <sip:10002@111.111.111.111:5060>;tag=3e035e07
    Call-ID: ZDIxMDcwOTY4ZmFmZmViNWYzMTFhNmFlZjFkNTE1ZjQ.
    CSeq: 1 ACK
    User-Agent: 3CXPhoneSystem 8.0.10708.0
    Content-Length: 0

    INVITE sip:5555555@222.222.222.222:49298 SIP/2.0
    Via: SIP/2.0/UDP 111.111.111.111:5060;branch=z9hG4bK-d8754z-e33c025d0d699055-1---d8754z-;rport
    Max-Forwards: 70
    Contact: <sip:10002@111.111.111.111:5060>
    To: <sip:5555555@dydns.homeip.net:5062>;tag=36bea03a2fb886edi1
    From: <sip:10002@111.111.111.111:5060>;tag=3e035e07
    Call-ID: ZDIxMDcwOTY4ZmFmZmViNWYzMTFhNmFlZjFkNTE1ZjQ.
    CSeq: 2 INVITE
    Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REGISTER, SUBSCRIBE, NOTIFY, REFER, INFO, MESSAGE
    Content-Type: application/sdp
    User-Agent: 3CXPhoneSystem 8.0.10708.0
    Content-Length: 301

    v=0
    o=3cxPS 414783111168 308767883266 IN IP4 111.111.111.111
    s=3cxPS Audio call
    c=IN IP4 111.111.111.111
    t=0 0
    m=image 10000 udptl t38
    a=T38FaxVersion:1
    a=T38MaxBitRate:14400
    a=T38FaxRateManagement:transferredTCF
    a=T38FaxMaxBuffer:10500
    a=T38FaxMaxDatagram:1500
    a=T38FaxUdpEC:t38UDPRedundancy
    SIP/2.0 488 Not Acceptable Here
    To: <sip:5555555@dydns.homeip.net:5062>;tag=36bea03a2fb886edi1
    From: <sip:10002@111.111.111.111:5060>;tag=3e035e07
    Call-ID: ZDIxMDcwOTY4ZmFmZmViNWYzMTFhNmFlZjFkNTE1ZjQ.
    CSeq: 2 INVITE
    Via: SIP/2.0/UDP 111.111.111.111:5060;branch=z9hG4bK-d8754z-e33c025d0d699055-1---d8754z-
    Contact: SPA-3102 <sip:5555555@222.222.222.222:49298>
    Warning: 304 spa "Media type not available"
    Server: Linksys/SPA3102-5.1.10(GW)
    Content-Length: 0

    ACK sip:5555555@222.222.222.222:49298 SIP/2.0
    Via: SIP/2.0/UDP 111.111.111.111:5060;branch=z9hG4bK-d8754z-e33c025d0d699055-1---d8754z-;rport
    Max-Forwards: 70
    To: <sip:5555555@dydns.homeip.net:5062>;tag=36bea03a2fb886edi1
    From: <sip:10002@111.111.111.111:5060>;tag=3e035e07
    Call-ID: ZDIxMDcwOTY4ZmFmZmViNWYzMTFhNmFlZjFkNTE1ZjQ.
    CSeq: 2 ACK
    Content-Length: 0

    BYE sip:5555555@222.222.222.222:49298 SIP/2.0
    Via: SIP/2.0/UDP 111.111.111.111:5060;branch=z9hG4bK-d8754z-bf5dbe234c755156-1---d8754z-;rport
    Max-Forwards: 70
    Contact: <sip:10002@111.111.111.111:5060>
    To: <sip:5555555@dydns.homeip.net:5062>;tag=36bea03a2fb886edi1
    From: <sip:10002@111.111.111.111:5060>;tag=3e035e07
    Call-ID: ZDIxMDcwOTY4ZmFmZmViNWYzMTFhNmFlZjFkNTE1ZjQ.
    CSeq: 3 BYE
    User-Agent: 3CXPhoneSystem 8.0.10708.0
    Reason: SIP;description="Application Rejected Sdp(usually no common codec)"
    Content-Length: 0

    SIP/2.0 200 OK
    To: <sip:5555555@dydns.homeip.net:5062>;tag=36bea03a2fb886edi1
    From: <sip:10002@111.111.111.111:5060>;tag=3e035e07
    Call-ID: ZDIxMDcwOTY4ZmFmZmViNWYzMTFhNmFlZjFkNTE1ZjQ.
    CSeq: 3 BYE
    Via: SIP/2.0/UDP 111.111.111.111:5060;branch=z9hG4bK-d8754z-bf5dbe234c755156-1---d8754z-
    Server: Linksys/SPA3102-5.1.10(GW)
    Content-Length: 0

    REGISTER sip:sip.domain.com SIP/2.0
    Via: SIP/2.0/UDP 192.168.1.67:5062;branch=z9hG4bK-39ad69e3
    From: SPA-3102 <sip:10002@sip.domain.com>;tag=e437b1a5a6622729o1
    To: SPA-3102 <sip:10002@sip.domain.com>
    Call-ID: 987f9671-66d8a701@192.168.1.67
    CSeq: 20674 REGISTER
    Max-Forwards: 70
    Contact: SPA-3102 <sip:10002@222.222.222.222:49298>;expires=3600
    User-Agent: Linksys/SPA3102-5.1.10(GW)
    Content-Length: 0
    Allow: ACK, BYE, CANCEL, INFO, INVITE, NOTIFY, OPTIONS, PRACK, REFER
    Supported: 100rel, x-sipura, replaces

    REGISTER sip:sip.domain.com SIP/2.0
    Via: SIP/2.0/UDP 192.168.1.67:5062;branch=z9hG4bK-4f4b0b4b
    From: SPA-3102 <sip:10002@sip.domain.com>;tag=e437b1a5a6622729o1
    To: SPA-3102 <sip:10002@sip.domain.com>
    Call-ID: 987f9671-66d8a701@192.168.1.67
    CSeq: 20675 REGISTER
    Max-Forwards: 70
    Proxy-Authorization: Digest username="10002",realm="3CXPhoneSystem",nonce="414d535c0196351235:d043b74515e579ce6222c6740f4d564e",uri="sip:sip.domain.com",algorithm=MD5,response="80fbf6faa34a33fd6f8c5159d300cef5"
    Contact: SPA-3102 <sip:10002@222.222.222.222:49298>;expires=3600
    User-Agent: Linksys/SPA3102-5.1.10(GW)
    Content-Length: 0
    Allow: ACK, BYE, CANCEL, INFO, INVITE, NOTIFY, OPTIONS, PRACK, REFER
    Supported: 100rel, x-sipura, replaces

    SIP/2.0 100 Trying
    To: <sip:5555555@dydns.homeip.net:5062>
    From: <sip:10002@111.111.111.111:5060>;tag=a12f1e6a
    Call-ID: YzIxMWVjZTMxOWRmYmMyMWJjMzE2NWRlNjg5ZjVlODg.
    CSeq: 1 INVITE
    Via: SIP/2.0/UDP 111.111.111.111:5060;branch=z9hG4bK-d8754z-1149b44960733d06-1---d8754z-
    Server: Linksys/SPA3102-5.1.10(GW)
    Content-Length: 0

    SIP/2.0 180 Ringing
    To: <sip:5555555@dydns.homeip.net:5062>;tag=3575bd7fd5e301d0i1
    From: <sip:10002@111.111.111.111:5060>;tag=a12f1e6a
    Call-ID: YzIxMWVjZTMxOWRmYmMyMWJjMzE2NWRlNjg5ZjVlODg.
    CSeq: 1 INVITE
    Via: SIP/2.0/UDP 111.111.111.111:5060;branch=z9hG4bK-d8754z-1149b44960733d06-1---d8754z-
    Contact: SPA-3102 <sip:5555555@222.222.222.222:49298>
    Server: Linksys/SPA3102-5.1.10(GW)
    Remote-Party-ID: SPA-3102 <sip:10002@sip.domain.com>;screen=yes;party=called
    Content-Length: 0

    SIP/2.0 200 OK
    To: <sip:5555555@dydns.homeip.net:5062>;tag=3575bd7fd5e301d0i1
    From: <sip:10002@111.111.111.111:5060>;tag=a12f1e6a
    Call-ID: YzIxMWVjZTMxOWRmYmMyMWJjMzE2NWRlNjg5ZjVlODg.
    CSeq: 1 INVITE
    Via: SIP/2.0/UDP 111.111.111.111:5060;branch=z9hG4bK-d8754z-1149b44960733d06-1---d8754z-
    Contact: SPA-3102 <sip:5555555@222.222.222.222:49298>
    Server: Linksys/SPA3102-5.1.10(GW)
    Remote-Party-ID: SPA-3102 <sip:10002@sip.domain.com>;screen=yes;party=called
    Content-Length: 293
    Allow: ACK, BYE, CANCEL, INFO, INVITE, NOTIFY, OPTIONS, PRACK, REFER
    Supported: 100rel, x-sipura, replaces
    Content-Type: application/sdp

    v=0
    o=- 1732 1732 IN IP4 222.222.222.222
    s=-
    c=IN IP4 222.222.222.222
    t=0 0
    m=audio 16384 RTP/AVP 8 100 101
    a=rtpmap:8 PCMA/8000
    a=rtpmap:100 NSE/8000
    a=fmtp:100 192-193
    a=rtpmap:101 telephone-event/8000
    a=fmtp:101 0-15
    a=ptime:20
    a=sendrecv
    m=audio 0 RTP/AVP 0
    m=image 0 udptl t38
    ACK sip:5555555@222.222.222.222:49298 SIP/2.0
    Via: SIP/2.0/UDP 111.111.111.111:5060;branch=z9hG4bK-d8754z-bd2a1f17b63eec45-1---d8754z-;rport
    Max-Forwards: 70
    Contact: <sip:10002@111.111.111.111:5060>
    To: <sip:5555555@dydns.homeip.net:5062>;tag=3575bd7fd5e301d0i1
    From: <sip:10002@111.111.111.111:5060>;tag=a12f1e6a
    Call-ID: YzIxMWVjZTMxOWRmYmMyMWJjMzE2NWRlNjg5ZjVlODg.
    CSeq: 1 ACK
    User-Agent: 3CXPhoneSystem 8.0.10708.0
    Content-Length: 0

    BYE sip:10002@111.111.111.111:5060 SIP/2.0
    Via: SIP/2.0/UDP 192.168.1.67:5062;branch=z9hG4bK-980f7a47
    From: <sip:5555555@dydns.homeip.net:5062>;tag=3575bd7fd5e301d0i1
    To: <sip:10002@111.111.111.111:5060>;tag=a12f1e6a
    Call-ID: YzIxMWVjZTMxOWRmYmMyMWJjMzE2NWRlNjg5ZjVlODg.
    CSeq: 101 BYE
    Max-Forwards: 70
    User-Agent: Linksys/SPA3102-5.1.10(GW)
    Content-Length: 0

    SIP/2.0 100 Trying
    To: <sip:5555555@dydns.homeip.net:5062>
    From: "John Doe"<sip:10002@111.111.111.111:5060>;tag=5b369b13
    Call-ID: MGE0MTI0YzU1ZmNjNmQ1MGNiMDYzZWY5YWY4ZDhkMmY.
    CSeq: 1 INVITE
    Via: SIP/2.0/UDP 111.111.111.111:5060;branch=z9hG4bK-d8754z-d97e4c7ddf484a2b-1---d8754z-
    Server: Linksys/SPA3102-5.1.10(GW)
    Content-Length: 0

    SIP/2.0 180 Ringing
    To: <sip:5555555@dydns.homeip.net:5062>;tag=145678a567fa22b3i1
    From: "John Doe"<sip:10002@111.111.111.111:5060>;tag=5b369b13
    Call-ID: MGE0MTI0YzU1ZmNjNmQ1MGNiMDYzZWY5YWY4ZDhkMmY.
    CSeq: 1 INVITE
    Via: SIP/2.0/UDP 111.111.111.111:5060;branch=z9hG4bK-d8754z-d97e4c7ddf484a2b-1---d8754z-
    Contact: SPA-3102 <sip:5555555@222.222.222.222:49298>
    Server: Linksys/SPA3102-5.1.10(GW)
    Remote-Party-ID: SPA-3102 <sip:10002@sip.domain.com>;screen=yes;party=called
    Content-Length: 0

    SIP/2.0 200 OK
    To: <sip:5555555@dydns.homeip.net:5062>;tag=145678a567fa22b3i1
    From: "John Doe"<sip:10002@111.111.111.111:5060>;tag=5b369b13
    Call-ID: MGE0MTI0YzU1ZmNjNmQ1MGNiMDYzZWY5YWY4ZDhkMmY.
    CSeq: 1 INVITE
    Via: SIP/2.0/UDP 111.111.111.111:5060;branch=z9hG4bK-d8754z-d97e4c7ddf484a2b-1---d8754z-
    Contact: SPA-3102 <sip:5555555@222.222.222.222:49298>
    Server: Linksys/SPA3102-5.1.10(GW)
    Remote-Party-ID: SPA-3102 <sip:10002@sip.domain.com>;screen=yes;party=called
    Content-Length: 251
    Allow: ACK, BYE, CANCEL, INFO, INVITE, NOTIFY, OPTIONS, PRACK, REFER
    Supported: 100rel, x-sipura, replaces
    Content-Type: application/sdp

    v=0
    o=- 6293 6293 IN IP4 222.222.222.222
    s=-
    c=IN IP4 222.222.222.222
    t=0 0
    m=audio 16388 RTP/AVP 0 100 101
    a=rtpmap:0 PCMU/8000
    a=rtpmap:100 NSE/8000
    a=fmtp:100 192-193
    a=rtpmap:101 telephone-event/8000
    a=fmtp:101 0-15
    a=ptime:20
    a=sendrecv
    ACK sip:5555555@222.222.222.222:49298 SIP/2.0
    Via: SIP/2.0/UDP 111.111.111.111:5060;branch=z9hG4bK-d8754z-625f847de71cce06-1---d8754z-;rport
    Max-Forwards: 70
    Contact: <sip:10002@111.111.111.111:5060>
    To: <sip:5555555@dydns.homeip.net:5062>;tag=145678a567fa22b3i1
    From: "John Doe"<sip:10002@111.111.111.111:5060>;tag=5b369b13
    Call-ID: MGE0MTI0YzU1ZmNjNmQ1MGNiMDYzZWY5YWY4ZDhkMmY.
    CSeq: 1 ACK
    User-Agent: 3CXPhoneSystem 8.0.10708.0
    Content-Length: 0

    BYE sip:5555555@222.222.222.222:49298 SIP/2.0
    Via: SIP/2.0/UDP 111.111.111.111:5060;branch=z9hG4bK-d8754z-65374f2a8873330b-1---d8754z-;rport
    Max-Forwards: 70
    Contact: <sip:10002@111.111.111.111:5060>
    To: <sip:5555555@dydns.homeip.net:5062>;tag=145678a567fa22b3i1
    From: "John Doe"<sip:10002@111.111.111.111:5060>;tag=5b369b13
    Call-ID: MGE0MTI0YzU1ZmNjNmQ1MGNiMDYzZWY5YWY4ZDhkMmY.
    CSeq: 2 BYE
    User-Agent: 3CXPhoneSystem 8.0.10708.0
    Content-Length: 0

    SIP/2.0 200 OK
    To: <sip:5555555@dydns.homeip.net:5062>;tag=145678a567fa22b3i1
    From: "John Doe"<sip:10002@111.111.111.111:5060>;tag=5b369b13
    Call-ID: MGE0MTI0YzU1ZmNjNmQ1MGNiMDYzZWY5YWY4ZDhkMmY.
    CSeq: 2 BYE
    Via: SIP/2.0/UDP 111.111.111.111:5060;branch=z9hG4bK-d8754z-65374f2a8873330b-1---d8754z-
    Server: Linksys/SPA3102-5.1.10(GW)
    Content-Length: 0

    I can post additional configuration if necessary.
     
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