Phone behind router
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Hello!
I use an ER707M2, an OM200 and various APs.
A Fritzbox, which only has DECT active, will be used for telephony. This worked for a short time and then the O2 SIP numbers in Germany could no longer be provisioned by the Fritzbox.
I'm a bit at the end of my tether with my half-knowledge ... a port, DNS, ... Maybe I don't understand the Omada ;) and have overlooked something.
Best regards and thank you!
Frank
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Hi @Liftboy
Thanks for posting in our business forum.
I, TBH, want to delete this post and message you to rewrite this post. I am not grasping anything useful here. Is there a question you want to ask? Be clear about the subject and the issue that you have.
I seem to understand what you want to express by the title but this post entirely looks like a low-effort one.
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Please excuse the unclear wording!
Behind an Omada ER707M2 there are various APs and a Fritzbox which is intended solely for the operation of a few DECT telephones.
On the WAN side of the 707 there is a fibre optic and a DSL connection (O2 with telephony).
After a restart, the telephone runs and then quickly switches off again. It somehow smells like a DNS problem.
I allready enabled SIP ALG.
I don't really know what to do.
Frank
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This was not successful. I restarted the Fritzbox after the setting. Perhaps the 707 router should also be restarted .... . I also added DMZ to the IP of the Fritzbox for port forwarding.
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As I understand , the Fritzbox is also a router so you may well have a double NAT scenario. Can you explain how the Fritzbox is configured ?
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No, the Fritzbox is configured as a client w/o NAT or router funktion. ;)
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Hi @Liftboy
Thanks for posting in our business forum.
Liftboy wrote
No, the Fritzbox is configured as a client w/o NAT or router funktion. ;)
If you can confirm it is not double-NAT, you can start to Wireshark and start with analyzing the packet.
It's SIP, right? Wireshark and see the interaction where it congests.
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I'm assuming the SIP registration is failing ? does the Fritzbox have any logging that would be useful ?
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No, not really. I got the information that the registration of each number is failing and it seemd to be a DNS problem. Not more.
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