Category: SIP Options

• Fail over SIP Options SIP Response Code Translation

  Lync Dial Plan Redundancy

  It gets a bit frustrating trying to match gateways to Lync for good functionality. It is even more frustrating when its not a certified gateway. With this introduction I fire into a new post about gateways, resilience and fail-over options. Usually when an alternative route exists for fail over one…

  18/03/2013
• event id Event ID 1400 Exchange UM 2010 SIP Options UM

  Event ID 1400 – UM Server

  I recently set up Lync 2010 at our offices and ran into a snag with Exchange 2010 SP2 UM voice mail integration. The symptom was the following error in Exchange 2010 UM: The following UM IP gateways did not respond as expected to a SIP OPTIONS request. Additional symptoms were that Lync…

  22/02/2013
• SIP SIP Options

  SIP Options

  For some time now I have seen my Wireshark traces and the event log on the Mediation Server report an issue with regard to SIP Options. I finally was forced to pay attention to this item during a recent deployment. In the image above the Source IP 10.2.85.31 is the…

  20/02/2013