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Skype to Lync voice call fails RRS feed

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    Hello

    I have configured the Lync federation with Skype. I have IM and Presence interoperability working both ways. Voice is working from Lync to Skype.

    My problem is just voice calls from skype to lync. The calls fails and I get a no answer in the skype client. Looking to the Edge logs I can see a "SIP/2.0 480 Temporarily Unavailable" received from the front end that is forwarded to the skype.

    Any idea is welcome

    JJ

    Tuesday, January 27, 2015 1:10 AM

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    have you opened the required ports for federation?. have a look at the port requirement and see if you missed any or the direction that you opened.

    Role/Protocol/TCP or UDP/Port Source IP address Destination IP address Notes

    Access/SIP(MTLS)/TCP/5061

    Public IM connectivity partners

    Edge Server Access interface

    For federated and public IM connectivity that use SIP.

    Access/SIP(MTLS)/TCP/5061

    Edge Server Access interface

    Public IM connectivity partners

    For federated and public IM connectivity that use SIP.

    Access/SIP(TLS)/TCP/443

    Clients

    Edge Server Access interface

    Client-to-server SIP traffic for external user access.

    A/V/RTP/TCP/50,000-59,999

    Edge Server Access interface

    Live Messenger clients

    Used for A/V sessions with Windows Live Messenger if public IM connectivity is configured.

    A/V/STUN,MSTURN/UDP/3478

    Edge Server Access interface

    Live Messenger clients

    Required for public IM connectivity with Windows Live Messenger.

    A/V/STUN,MSTURN/UDP/3478

    Live Messenger clients

    Edge Server Access interface

    Required for public IM connectivity with Windows Live Messenger.

    http://thamaraw.com

    • Proposed as answer by Eason Huang Wednesday, January 28, 2015 3:04 PM
    • Marked as answer by Eason Huang Friday, February 6, 2015 6:33 AM
    Tuesday, January 27, 2015 2:11 AM
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    Hi,

    From your description above, it can be the issue of the ports between Lync Edge Server external interface and Skype. Please double check the ports with the help Thamara.Wijesinghe provided above. Especially for the source IP address is from Public IM connectivity partners.

    Also, please also make sure Lync Server update to the latest version.

    Best Regards,

    Eason Huang

    Eason Huang
    TechNet Community Support

    • Marked as answer by Eason Huang Friday, February 6, 2015 6:34 AM
    Wednesday, January 28, 2015 3:14 PM

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    have you opened the required ports for federation?. have a look at the port requirement and see if you missed any or the direction that you opened.

    Role/Protocol/TCP or UDP/Port Source IP address Destination IP address Notes

    Access/SIP(MTLS)/TCP/5061

    Public IM connectivity partners

    Edge Server Access interface

    For federated and public IM connectivity that use SIP.

    Access/SIP(MTLS)/TCP/5061

    Edge Server Access interface

    Public IM connectivity partners

    For federated and public IM connectivity that use SIP.

    Access/SIP(TLS)/TCP/443

    Clients

    Edge Server Access interface

    Client-to-server SIP traffic for external user access.

    A/V/RTP/TCP/50,000-59,999

    Edge Server Access interface

    Live Messenger clients

    Used for A/V sessions with Windows Live Messenger if public IM connectivity is configured.

    A/V/STUN,MSTURN/UDP/3478

    Edge Server Access interface

    Live Messenger clients

    Required for public IM connectivity with Windows Live Messenger.

    A/V/STUN,MSTURN/UDP/3478

    Live Messenger clients

    Edge Server Access interface

    Required for public IM connectivity with Windows Live Messenger.

    http://thamaraw.com

    • Proposed as answer by Eason Huang Wednesday, January 28, 2015 3:04 PM
    • Marked as answer by Eason Huang Friday, February 6, 2015 6:33 AM
    Tuesday, January 27, 2015 2:11 AM
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    R u able to get audio calls from your external business federated partner ?

    ~ Please remember, if you see a post that helped you please click "Vote As Helpful" and if it answered your question please click "Mark As Answer". ~ This forum post is based upon my personal experience and does not necessarily reflect the opinion or view of Microsoft, its employees, or other MVPs.

    Tuesday, January 27, 2015 5:36 AM
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    Hi,

    From your description above, it can be the issue of the ports between Lync Edge Server external interface and Skype. Please double check the ports with the help Thamara.Wijesinghe provided above. Especially for the source IP address is from Public IM connectivity partners.

    Also, please also make sure Lync Server update to the latest version.

    Best Regards,

    Eason Huang

    Eason Huang
    TechNet Community Support

    • Marked as answer by Eason Huang Friday, February 6, 2015 6:34 AM
    Wednesday, January 28, 2015 3:14 PM