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A SIP phone is an IP phone that implements client and server functions of a SIP user agent and provides the traditional call functions of a telephone, such as dial, answer, reject, call hold, and call transfer. SIP phones may be implemented as a hardware … SIP over VPN-issue | Fortinet Technical Discussion Forums Jun 11, 2015 Remote IP Phone Security Using VPN | FreePBX - Let Freedom
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Re: sip registration over vpn (ipsec) BUG!! Hi I have the situation where my remote Siemens Phone says it's registered on both the phone and 3cx and it can call out but any calls to it get the engaged tone - as others, this phone worked prior to upgrading to v 8.0.10116.583.
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Alternatively you can just put the phone with SIP or SCCP (as supported be NAT devices used) and register to callmanager w/o VPN, you configure the device as secure and privacy is maintained. Hope this helps, if so please rate post! 0 Helpful VPN On An iPhone: What It Is & Best VPN For iPhone Apps! May 25, 2017 Avaya Smart Desktop Phones & IP Devices | Avaya