Category: SIP

• Firewall Rules SIP SIP 415 SIP/2.0 415 Unsupported Media Type

  SIP/2.0 415 Unsupported Media Type

  SIP 415 unsupported Media Type #SkypeforBusiness

  30/09/2017
• B-Party Billing CLI Refer Support Referred-by SIP

  Enable Referred By Header

  I have often come across a SIP vendor that uses the CLI for billing purposes. This can be an issue when A (External PSTN party) calls B (lync DDI user) which is forwarded or transferred to C (external PSTN party).In this case the true caller A cannot be shown as…

  29/05/2013
• 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