vpn

  1. Solved New VPN - An IP has been blacklisted

    We have implemented a new VPN, which we want to roll out to our users, however as soon as the VPN is enabled it is blocking 3CX and the Windows client looses its connection. When attempting to login to the web portal, when connected to the VPN, the login loads fine, but the login fails giving...

  2. No speech on calls between customer sites

    Hi all, I have a customer with a slightly unusual setup. They have a 3CX hosted PBX (hosted by 3CX). They have a main office location and that is where their main phone is located, set up to act as an SBC/router phone (I will call this location A). They then have several remote offices (I will...

  3. Bridge over IPSec VPN using local IP

    Hello, I have two on prem 3cx servers bridged together over VPN currently, and have always been using the local IP addresses of those servers in the bridge setups since its just going over VPN. Everything has always worked great. Both are running same version 18 build right now, but I am going...

  4. Registration and media issues with overlapping subnets between sites

    Similar to a regular trunk, is it possible to manually set the SIP contact and SDP connection fields for a gateway trunk? In fact, was able to set the SIP contact in the outbound parameters but can’t find where and how to update the SDP connection field for a gateway trunk, ie: Patton...

  5. No Audio When Connected to VPN

    Hello, I suspect I am missing a firewall rule/policy, but haven't been able to figure which policy that might be. I've familiarized myself with https://www.3cx.com/docs/manual/firewall-router-configuration/ I have followed the FortiGate setup in...

  6. Solved 3CX on a Windows Machine with VPN

    We are going to install a VPN on a Windows machine where the 3CX is already installed. Now after the VPN the IP address of the machine changes to virtual IP. Can we use the same virtual IP with in 3CX to access it from the remote locations or to connect the SIP trunk?

  7. Problem 3CX Desktop App/web client with Sonicwall VPN

    Hi, I updated the 3CX v16 to v18 in last week, and now I verified that web client and 3CX Desktop App (new client to Windows) are crashing when the Sonicwall VPN (Global VPN Client) is connected. More specifically, when I realize a call, the VPN tunnel is break and all connections of network...
  8. Mayank143

    AES, RSA & VPN on 3CX PBX System

    Dear Friends, Started trial (installed on AZURE) of 3CX phone system (PBX) only for internal calls/msg/chat/video/audio calls (NO OUTER SERVICE). 1. Need to know what kind of AES-256/512 & 2048-RSA they are using for internal communications 3cx to 3cx? 2. As they are using FREE Lets Encrypt...

  9. Remote Phones - Yealink VPN Options

    Hi Everyone, With our legacy Cisco environment, we supported physical phones at home by terminating them against the typically overly complex Cisco MRA solution. Now that we are migrating to 3CX, I would like to know how folks support remote users with Yealink T27G phones? I cannot use the...

  10. Phone Extension Registration Double Up

    Hello, I have recently configured a clients site with a VPN across to their 3CX instance in our DC. This was completed to achieve In office and out of office locations, with in office to use SIP ports and out of office using the 3CX tunnel. Everything is working correctly but since the VPN has...
    • Oipon
    • Thread
    • app for windows double up in office out of office registration vpn wan
    • Replies: 1
    • Forum: Phone System / PBX

  11. Pulse VPN - Does not Connect

    Hi, I have a customer who is having issues connecting to the mobile apps and the WebClient when on the Pulse VPN, they can reach the WebClient however when they press sign in it just says "Disconnected, waiting for network" however the moment they disconnect it works fine. Any ideas? :)...

  12. Connect an on premise SIP trunk with 3cx on cloud (Azure)

    Hi, We have a 3cx deployed on Azure for a customer located in Swiss. The customer has purchased a SIP trunk from a supported provider (Sunrise). The SIP provider has installed an SBC on-site (they told us it's not possible to do direct connection to their SBCs with public IPs ). What would be...
    • ga_sync
    • Thread
    • azure azure 3cx azure vpn provider sip trunk sbc sip trunk sunrise vpn
    • Replies: 16
    • Forum: Phone System / PBX

  13. Phones not communicating with pabx.

    Hi all. I have to sites configured, site A and site B. -Site A is the main site where the PABX is located. All the phones at site A works perfectly fine. Network: 192.168.31.0/24 -Site B is configured with a point to point VPN that is connected to site A. On site B i divided the network with...

  14. Does calls from one extension to another extension on 3cx Desktop Apps works over Point-2-Site VPN?

    Hello All, We have configured 3cx servers within our LAN environment. We have users working from home and some working in the office. Scenario 1 - Calls made from an extension (with the laptop located in the office) to another extension (with the laptop located outside the LAN but connected to...

  15. VPN One-Way Audio

    Hello, I'm having trouble with some 3CX Desktop Client users who switch between HomeOffice and normal In-Office. When at home, they experience one-way audio while connected to the VPN and cannot hear the caller. Their audio is transmitted just fine, and the On-Premise 3CX receives external...

  16. 3CX App only connects on wifi

    Out of the blue our 3CX app on both Android and iOS devices stopped connecting to the 3CX server. Calls can be made from the local LAN to these phones ( on 3G) Call is received but cannot be answered. Additionally the App on the phones does not connect ( register) "Waiting for Network". When...

  17. Phone provisioning over VPN

    Hi, I have two sites connected by a VPN: Main office: 192.168.1.0/24 Satellite office: 192.168.2.0/24 Both LANs can talk to each other 3CX & IP phones at the main office work fine. I am unable to get the IP phones at the stellite office to connect to 3CX I am following this guide...

  18. Idea's for Moving from on premise to Cloud

    We have 3 separate clinics. We tried 3cx at one with an onsite PBX and like it. We are looking at moving our pbx to the cloud so that all offices can point to the same one. Are SBC's the way to go, or create a vpn tunnel to each location from our cloud server? Can you have more than one SBC in...
    • Logan Nordly
    • Thread
    • cloud cloud express pbx recommendation sbc sbc border controller tunnel tunnel vpn
    • Replies: 3
    • Forum: Phone System / PBX

  19. Devices blocked during the night in remote office connected via VPN

    Hi, I have 2 Yealink W56H using the W60B base, 2 Cisco SPA 303 and one Patton 4112 gateway in a remote office. I happens frequently that when I arrive at work in the morning I find that all, or some, of these devices stop to work during the night . It never happens for local LAN devices. 3CX...

  20. Registration Issue with VPN connected Yealink phones

    So we have ran into an issue that I am stumped on and am hoping for some help. We have several customers that have 3CX phone systems. 3CX versions ranging from 12 to the 15.5. Several of our customers have remote sites. They are connected via VPN with Mikrotiks and routed. All traffic between...
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