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Mediatition server is compulsary for an entreprise voice? RRS feed

  • Question

  • Hi all,

    I would like to know why is mediation server require and is it compulsary for an entreprise voice?

     

    Friday, April 8, 2011 9:01 AM

Answers

  • Hello,

    The main functions of the Mediation Server are as follows:

    • Encrypting and decrypting SRTP on the Lync Server side
    • Translating SIP over TCP (for gateways that do not support TLS) to SIP over mutual TLS
    • Translating media streams between Lync Server and the gateway peer of the Mediation Server
    • Connecting clients that are outside the network to internal ICE components, which enable media traversal of NAT and firewalls
    • Acting as an intermediary for call flows that a gateway does not support, such as calls from remote workers on an Enterprise Voice client
    • In deployments that include SIP trunking, working with the SIP trunking service provider to provide PSTN support, which eliminates the need for a PSTN gateway

    That is why you would need the mediation server.

    So, you must deploy Lync Server 2010 Mediation Server if you deploy the Enterprise Voice workload.

    http://technet.microsoft.com/en-us/library/gg398399.aspx

    I would say that answer is valid for all practical purposes.


    But in theory if you find a gateway capable of speaking SIP over TCP / TLS and RTaudio, then you might be able to do it without a mediation server. See this post:

    http://social.microsoft.com/Forums/en/communicationsservertelephony/thread/8a0bbd61-9f0a-455a-b8b1-5b0daa033c19

    /mk

    • Proposed as answer by Rowen-Xu Monday, April 11, 2011 1:30 AM
    • Marked as answer by Rowen-Xu Friday, April 15, 2011 9:34 AM
    Friday, April 8, 2011 12:20 PM
  • Hi,

    Yes, mediation server is compulsory for Enterprise Voice.

    Other information please check the information form Kressmark.

    Best Regards!


    Please remember to click “Mark as Answer” on the post that helps you, and to click “Unmark as Answer” if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.
    • Marked as answer by Rowen-Xu Friday, April 15, 2011 9:34 AM
    Monday, April 11, 2011 1:46 AM

All replies

  • Hello,

    The main functions of the Mediation Server are as follows:

    • Encrypting and decrypting SRTP on the Lync Server side
    • Translating SIP over TCP (for gateways that do not support TLS) to SIP over mutual TLS
    • Translating media streams between Lync Server and the gateway peer of the Mediation Server
    • Connecting clients that are outside the network to internal ICE components, which enable media traversal of NAT and firewalls
    • Acting as an intermediary for call flows that a gateway does not support, such as calls from remote workers on an Enterprise Voice client
    • In deployments that include SIP trunking, working with the SIP trunking service provider to provide PSTN support, which eliminates the need for a PSTN gateway

    That is why you would need the mediation server.

    So, you must deploy Lync Server 2010 Mediation Server if you deploy the Enterprise Voice workload.

    http://technet.microsoft.com/en-us/library/gg398399.aspx

    I would say that answer is valid for all practical purposes.


    But in theory if you find a gateway capable of speaking SIP over TCP / TLS and RTaudio, then you might be able to do it without a mediation server. See this post:

    http://social.microsoft.com/Forums/en/communicationsservertelephony/thread/8a0bbd61-9f0a-455a-b8b1-5b0daa033c19

    /mk

    • Proposed as answer by Rowen-Xu Monday, April 11, 2011 1:30 AM
    • Marked as answer by Rowen-Xu Friday, April 15, 2011 9:34 AM
    Friday, April 8, 2011 12:20 PM
  • Mediation Server is required to handle the traffic, but it can be collocated on the front end server.  (Meaning you don't need additional hardware.)

    You need a standalone mediation server if:

    1.  You use a Direct SIP connection to a SIP Trunking Provider without a Session Border Controller/Media Gateway
    2.  Your Media Gateway or existing IP-PBX does not support Media Bypass
    3.  You have enough users to warrant a standalone mediation server for performance

     

    Friday, April 8, 2011 1:44 PM
  • Hi,

    Yes, mediation server is compulsory for Enterprise Voice.

    Other information please check the information form Kressmark.

    Best Regards!


    Please remember to click “Mark as Answer” on the post that helps you, and to click “Unmark as Answer” if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.
    • Marked as answer by Rowen-Xu Friday, April 15, 2011 9:34 AM
    Monday, April 11, 2011 1:46 AM