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Verizon LTE Network Extender
The cell service in my house is terrible so Verizon sent me an LTE network extender. This was to replace a previous one that went end of life and worked just fine. Upon installation, I received a Server Error 9A stating to check LTE or firewall settings. I contacted Verizon and was told that this is a known issue with Xfinity. The Verizon tech told me that I will need to contact Xfinity support and likely speak to multiple people because, while it is an easy fix, I would struggle to find someone who understands the issue. He wasn’t kidding! I spoke to three different people last night (all told me to reboot my router) and none of them would elevate me to advanced tech support. This is a known issue that I found on Reddit and other online forms.
flatlander3
Problem Solver
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1.5K Messages
2 years ago
I don't think you're going to find an "easy fix".
How does an LTE extender work? It broadcasts a signal your phone can use, and uses your Internet connection outbound to the Verizon servers. For it to work property, that connection has to be persistent and reliable. When it isn't, due to network conditions, or another transient issue with your internet service, then what is supposed to happen is the software on the extender attempts to reconnect. If that reconnect still doesn't work, or if it eventually gives up after trying a few times, you'll probably get that error. If it works at all, it's not a firewall issue. They aren't blocking the outbound NAT connection to Verizon. There are very few ports that are blocked: https://www.xfinity.com/support/articles/list-of-blocked-ports
You didn't say what your network topology was either. If you are using a straight modem, and an Ethernet router or mesh network, sometimes that is also known for breaking IPsec connections and causing general havoc with persistent tunnels depending exactly on the protocol involved.
If you switch on regular 802.11 WiFi on your phone, and enable WiFi calling, how does it work? Dropping calls? Non-functional sometimes? It's pretty much the same thing as using an LTE extender. Old one work better? Yeah, well, some work better than others. Firmware changes on them too over time. Sometimes good. Sometimes not so much.
First place to look is your Internet connection to have a chance. The extender doesn't have any useful debugging info, but your cable connection does: https://forums.xfinity.com/conversations/your-home-network/internet-troubleshooting-tips/602dae4ac5375f08cde52ea0 If you are picking up errors often, or signals are out of spec, if you've got aging splitters, connectors, bad cabling, corroded filters, there isn't much of a chance. The link shows you what to look for, and maybe help determine if you want to have a tech look at it. Some problems you can fix yourself.
If you are looking for cell redundancy/fail-over when the internet doesn't work, an extender really isn't really the way to go anyway. You'd be better off with trying to intercept (repeat/rebroadcast) the cell signal to a tower depending on your housing situation, and if you can get a powered directional antenna where you need it, and also how bad the signal is in the first place you are trying to connect to. The gear to setup a "stinger" may not be very cheap depending on what you need.
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user_9238f3
1 Message
2 years ago
[Edited: "Language"], has anyone ever figured out how to make this work?
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