Groundwire & Softphone
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      1. Acrobits & Cloud Softphone FAQ
      2. Softphone & Groundwire (Personal Use Solution) FAQ
      3. Groundwire & Softphone

      Push Notifications on a Firewall

      If you are having trouble receiving push notifications on a particular wifi network, the issue is most likely firewall related. Make sure that port 5223 (the port Apple uses to deliver push notifications) is open.