IP Telephony and Phones

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Dear experts...  Has anyone ever configured SIP trunk coming of CME that has NAT? Can you please share you experiences on how you resolved one way NAT.\ https://ucpros.net/sip-one-way-audio/ I am being advise the ITSP should be involved issue is the ...

Hello,we change our ISP from ISDN to SIP. With the new ISP we use SRTP. With our phones it is no problem to call via this connection. The phones have certificats and all is fine. But with our VG310 i have a question. I know i can connect the VG310 vi...

Hello guys, Our client has a requirement that they need to have an automatic calling feature to automatically contact multiple users on predetermined numbers, and play a prerecorded message. I believe this can be done by Cisco Paging, but they don't ...