I successfully tested SIP/RTP using a SIP Soft Phone , a VPN and VZW 4G-LTE network, my laptop with the Pantech UML295 4G-LTE modem. Now, I want to do the same SIP/RTP tests without the VPN and just using the destination phone number (toll-free) and the MDN.
Cisco IP Phone Certificates and Secure Communications Typical VoIP deployment with Cisco Unified Communications Manager installed in the Headquarters … vpn - How to connect a remote IP Phone to our VOIP Network Any router pair will do - they don't have to be Cisco - and, yes, a VPN is the way to go. Certainly stick to a pair of routers that support a hardware VPN and, if possible, assign a static IP to the phone; DHCP will work but it's nice to know the exact IP of the phone for quick troubleshooting Cisco Unified Communications Manager Express System Nov 27, 2019
Any router pair will do - they don't have to be Cisco - and, yes, a VPN is the way to go. Certainly stick to a pair of routers that support a hardware VPN and, if possible, assign a static IP to the phone; DHCP will work but it's nice to know the exact IP of the phone for quick troubleshooting
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1. Log into the web interface by surfing to the IP of the phone on your network. The default username is admin, and the default password is 789. 2. Click on Network and then click on the VPN tab. Connecting remote phones to the network via site to site I have Sonicwalls at both locations and configured a site-to-site VPN between the two firewalls. I can ping from either location to an IP address at the other no problem but the phone will not find the FTP/MGC servers at the headquarters in CT. I have manually setup the phone with all of the pertinent info for it to find the FTP/MGC servers. VOIP Services & Solutions at AT&T Business. Cloud voice service that optionally integrates with legacy phone systems and runs over any public Internet connection or AT&T VPN. Global, enterprise wide voice solution (250+ seat requirement) for customers wanting to integrate voice with Cisco-based conferencing and collaboration. SIP trunking Avaya Smart Desktop Phones & IP Devices | Avaya Support for SIP and H.323 IP protocols help reduce infrastructure upgrade costs, and Avaya’s new Device Enrollment Services can significantly reduce deployment costs. Increase Employee Productivity Give your employees a competitive advantage with Avaya phones that deliver a full suite of features, numerous personalization options, and