ER8411 doesnt work with 3CX VoIP Telephones?

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ER8411 doesnt work with 3CX VoIP Telephones?

This thread has been locked for further replies. You can start a new thread to share your ideas or ask questions.
ER8411 doesnt work with 3CX VoIP Telephones?
ER8411 doesnt work with 3CX VoIP Telephones?
2023-08-25 14:02:00 - last edited 2023-10-31 07:44:40
Model: ER8411  
Hardware Version: V1
Firmware Version: 1.1.0

Moin,

 

as i work through my built (ER8411, TL-SG3452XP, TL-SG3452, 2xEAP650 Outdoor, 2xEAP265HD, OC300) i run into an issue with my phones. I use SNOM D385 VoIP desk Phones wich come with 3CX as "Backbone". We work with Easy Bell als provider who external gives us sip-trunks and hosts the server. Normally i only have to plug the desk phones in and the phone automaticly connects to its system (they are pre-configuratet). No matter which location - as soon as they get internet they work.

 

I now changed the Router from our Fritzbox to the ER8411, because we went to fiber and the provided router from the fiber company was a total joke. They still connect, i also can call a number or get a call: The connection will establish but i cant talk or hear anything. Before we "upgraded" to the ER8411 they already worked fine.

 

It seems to be a problem with Port Forwarding / Mapping. Do i need to configure the router to do so? Or do I have to downgrade to ER8411(UN)_V1_1.0.3?

 

Thanks in advance!

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#1
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1 Accepted Solution
Re:ER8411 doesnt work with 3CX VoIP Telephones?-Solution
2023-10-27 12:27:51 - last edited 2023-10-31 07:44:40

  @Criggn Solution: Reconfiguration of 3CX. Instead of a direct TCP/IP connection between the Phones the 3CX provides a channel via SSL. Works fine.

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#8
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Re:ER8411 doesnt work with 3CX VoIP Telephones?
2023-08-25 14:55:53

  @Criggn 

 

Try and disable SIP ALG

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#2
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Re:ER8411 doesnt work with 3CX VoIP Telephones?
2023-08-25 15:20:27

  @MR.S was never enabled. Normally it should allow all outgoing connections therefore i didnt change anything

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#3
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Re:ER8411 doesnt work with 3CX VoIP Telephones?
2023-08-25 15:24:05

  @Criggn 

 

if it has never been enabled, I would try to enable it, some SIP systems require it to be enabled, others do not,

 

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#4
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Re:ER8411 doesnt work with 3CX VoIP Telephones?
2023-08-25 15:52:56

  @MR.S tried, didnt help. Still nothing to hear.

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#5
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Re:ER8411 doesnt work with 3CX VoIP Telephones?
2023-08-28 02:34:07

  @Criggn 

supposedly, the outgoing connection should be totally fine and firewall. the only thing that may be the NAT that changes the src port and src IP.

enabling SIP ALG should the correct steps. MR.S is right.

but you said you are from fritzbox to 8411, on fritzbox, it worked fine?

if so, is there anything special configured on it? Port forward? VLAN?

ScReW yOu gUyS. I aM GOinG hoMe. —————————————————————— For heaven's sake, can you write and describe your issue based on plain fact, common logic and a methodologic approach? Appreciate it.
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#6
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Re:ER8411 doesnt work with 3CX VoIP Telephones?
2023-09-29 09:32:39

  @Tedd404 Sorry for the delay, we are in the middle of the last turnarounds for this year. I hadn't configurated anything. It was litteraly Plug and Play.

I also had a testrun for a few weeks now with SIP ALG enabled - doesn't solve the problem.

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#7
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Re:ER8411 doesnt work with 3CX VoIP Telephones?-Solution
2023-10-27 12:27:51 - last edited 2023-10-31 07:44:40

  @Criggn Solution: Reconfiguration of 3CX. Instead of a direct TCP/IP connection between the Phones the 3CX provides a channel via SSL. Works fine.

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#8
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