Thanks for the suggestions Ciprian and David. I'm sure that when it wasn't working my phone was connected to WiFi, I experimented with different local networks to see if that made a difference. I will try setting up Zoiper to use TCP and I will experiment with using various clients on my laptop (I have experimented with Linphone a bit but somehow I can't even make it through the account setup assistant - the "Apply" button stays greyed out so I can't register). Best, Sam On Mon, Dec 9, 2019 at 9:17 PM David Villasmil < david.villasmil.work@gmail.com> wrote:
+1
Also, change your Zoiper to TCP instead of UDP. We use thousands of Zoipers and they work well.
On Mon, 9 Dec 2019 at 20:03, Ciprian Dosoftei <ciprian.dosoftei@gmail.com> wrote:
Sam --
I would debug this by validating the premise that your FreeSWITCH node is indeed available through deploying a SIP client on your workstation/laptop using the same user credentials as on your phone. If everything checks out yet Zoiper still fails, it's likely an issue with its networking. For example, perhaps on the days when it works fine the phone might be connected on your local wireless network (and it permits SIP traffic) and when it doesn't, it may be connected through your data plan which might block SIP traffic -- it's a speculation but not an uncommon scenario. If that's the case, the easy fix is to change your SIP port to something nonstandard, and if possible, enable TLS encryption.
On Mon, 9 Dec 2019 at 14:32, Sam van Herwaarden < svanherwaarden@precisionag.org> wrote:
Hi,
I often have issues where my SIP handset can't seem to connect to my FreeSWITCH server. I'm using Zoiper on iOS and the default freeswitch installation (freeswitch-meta-all) on Debian Buster. The configuration is mostly vanilla - I disabled mod_signalwire, enabled mod_flite and mod_erlang_event, changed the default password and set up an extension that uses mod_erlang_event but that's all.
On the server ports 5060, 5070 and 5080 are open on TCP+UDP, ports 3478 and 3479 are open on UDP, and the port range 16384-32768 is also open on UDP. The server runs on a node on DigitalOcean.
The issue I'm encountering is that sometimes my handset registers just fine, but other times I get timeout/unreachable errors. Nothing seems to change about the configuration though - I don't restart the server or anything like that. Also, I do see connection attempts on the server from unknown IPs (I'm assuming these are malicious bots trying to get into the system) - this suggests to me that the server is reachable. The system can be unreachable (to me) for days, but then be reachable for days. I have not been able to recognize a pattern.
Does anyone have any suggestions what could be going on? Can it be something with my home networking setup? I would be happy to try a different SIP app if anyone has recommendations, it might be easier to debug this problem if I can get more verbose error messages than what Zoiper provides me with.
Kind regards, Sam _________________________________________________________________________
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-- Best Regards, Ciprian Dosoftei
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The FreeSWITCH project is sponsored by SignalWire https://signalwire.com Enhance your FreeSWITCH install with disruptive priced SMS and PSTN services. Build your next product on our scalable cloud platform.
Join our online community to chat in real time https://signalwire.community
Professional FreeSWITCH Services sales@freeswitch.com https://freeswitch.com
Official FreeSWITCH Sites https://freeswitch.com/oss https://freeswitch.org/confluence https://cluecon.com
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-- Regards,
David Villasmil email: david.villasmil.work@gmail.com phone: +34669448337 _________________________________________________________________________
The FreeSWITCH project is sponsored by SignalWire https://signalwire.com Enhance your FreeSWITCH install with disruptive priced SMS and PSTN services. Build your next product on our scalable cloud platform.
Join our online community to chat in real time https://signalwire.community
Professional FreeSWITCH Services sales@freeswitch.com https://freeswitch.com
Official FreeSWITCH Sites https://freeswitch.com/oss https://freeswitch.org/confluence https://cluecon.com
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