IP Telephony and Phones

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We are having issues with DTMF from Jabber softphones only.  The softphones are running on both Windows and Mac versions of Jabber.  Jabber v 11.9 in windows.  I am pretty sure DTMF worked at some point in the past, but I can not confirm when it stop...

Hi...   We have made an Sip normalisation script that add a Privacy : id header if from header is anonymous, was a demand from the telephony provider. That works as intended , but after the call has been established for 10-15 minutes a new INVITE is ...

Hi All ,   My setup is :   SIP Provider <--SIP--> CUBE <--SIP--> CUCM  <--SIP-->  Phone   CUCM Version 11.5   In this setup the CUBE receive an Invite from the SIP provider with a Diversion header in it. Then CUBE sends the Invite to CUCM  and the Di...