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Cannot register more than one VoIP phone
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Topic: Cannot register more than one VoIP phone (Read 6828 times)
Adamizme
Newbie
Posts: 2
Karma: 0
Cannot register more than one VoIP phone
«
on:
December 14, 2016, 09:58:01 pm »
I am doing some testing on a freeSwitch based PBX that I have setup with a public IP on a separate ISP. I have 4 phones that I'm attempting to test with from my office - 2 snom and 2 fanvil phones. Whichever phone of each model registers first registers fine and works great. The second phone to attempt to register does not ever receive a response from the PBX.
This issue was happening on 16.1, so I upgraded to 16.7 and it's still happening.
Static ports are enabled in outbound NAT. None of the phones would register at all without static ports.
Enabling and disabling reflection doesn't seem to make any difference.
Firewall optimization is set to conservative.
Any other ideas of what to try?
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bartjsmit
Hero Member
Posts: 1981
Karma: 193
Re: Cannot register more than one VoIP phone
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Reply #1 on:
December 15, 2016, 12:17:09 pm »
VoIP is notoriously sensitive to NAT. Any mileage in setting up a VPN to the pbx site?
Bart...
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Adamizme
Newbie
Posts: 2
Karma: 0
Re: Cannot register more than one VoIP phone
«
Reply #2 on:
December 15, 2016, 02:19:28 pm »
The PBX has a public IP assigned to it, so VPN isn't really an option and shouldn't be necessary. Multiple phones work fine with basic routers, just not opnsense.
I have roughly a couple dozen production opnsense routers, so this could be pretty problematic. If you search the internet for "pfsense multiple sip phones", it's obviously a known issue. Is there an equivalent to siproxd for opnsense? That's the only potential fix that I've read that I haven't tried, unless someone else has any other suggestions....
Thank you in advance!
«
Last Edit: December 15, 2016, 02:33:41 pm by Adamizme
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ThuTex
Newbie
Posts: 18
Karma: 2
Re: Cannot register more than one VoIP phone
«
Reply #3 on:
December 19, 2016, 08:51:58 pm »
try using a stun server?
in my case (though i currently only have 1 registered voip device) it always increased the stability of the connection.
you also might try to change port 5060 for 1 of the connections to something else and use port forwarding to have it end up where you want.
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Cannot register more than one VoIP phone