ᐅ FibreTwist and Unifi Router – What About Telephone Services?!

Hello everyone,

we are getting an FTTH fiber optic connection from the regional provider. They install a FibreTwist unit with an integrated modem in the main distribution frame (MDF). For me, this is actually ideal because I want to connect directly to my UniFi Dream Router anyway.

However, I have read that the modem sends telephony and internet through the same LAN port using different VLANs. But the Dream Router cannot handle telephony or VLANs on the uplink in my configuration. Now I’m a bit confused—how can I make calls using my landline number? Do I have to put a FritzBox in bridge mode in between first to be able to use telephony that way?

I haven’t researched enough yet, but if I have the SIP credentials, I could replace the FritzBox with a telephone system running on a Raspberry Pi (e.g. 3CX), right? But for that, I would first need to get “the VLAN to the Raspberry Pi,” correct? (Sorry, I only have partial knowledge here—but I’m eager to learn.)

Can someone enlighten me or throw some keywords at me that I can look up for more information?

I just came across the Gigaset Go-Box 100. It seems to combine a telephone system and a DECT base station in one device, which is exactly what I need (assuming I just have to enter the SIP data and that’s it).

However, it’s only compatible with specific handsets, which I don’t really want to purchase. But I guess there’s no other way around this (?).

Alternatively, I could skip DECT and use WLAN telephony instead. But I would still need a central telephone system for the SIP data, and the “handsets” (clients?) would then register with that system, right?

squier23 schrieb:

However, they are only compatible with specific handsets, which I don't really want to buy.

According to whom? As far as I know, the handsets just need to support DECT. Some additional convenience features might not work with non-Gigaset handsets, though.

Is that a Genexis box you are getting? It has a total of 4 LAN ports. You could connect your DreamMachine to one port and use the login credentials to establish the internet connection. Then, you can use a second port for a FRITZ!Box or any other PBX that supports SIP to set up the SIP login.

DaGoodness schrieb:

Is that a Genexis box you’re getting? It has a total of 4 LAN ports. You could connect your DreamMachine to one port and use the login credentials to establish the internet connection. Then you’d use a second port for a FRITZ!Box or another SIP-capable telephone system to handle the SIP registration.

Yes, exactly that Genexis. I somehow understood it as if telephony and internet would come together from just one port, and I would have to separate them via VLAN. But that’s probably just due to my lack of knowledge, because otherwise having 4 ports in total wouldn’t make any sense. So, thanks for clarifying!

Now my only question is whether to connect a FRITZ!Box for telephony, a Gigaset base station, or something else. The latter only makes sense if it supports DECT, since I plan to connect pure IP phones via Wi-Fi and enter the SIP data directly there, right?

With the Gigaset base station, it might be that only the comfort functions work with the special MX handsets. That makes sense. But since I’d like to have a central phonebook, pure DECT alone wouldn’t work for that anyway, correct? So I’d be better off using directly connected IP phones?

I have a similar setup and would now really like to have a home phone. In the rental apartment, you could always hear your mobile phone vibrating somewhere. In the house, it could easily get lost in so many places...

I get fiber optic with an ONT, and behind that is a Ubiquity UDM Pro.

I thought it would be simple to just connect a WiFi VoIP phone and then make calls. But after a quick Google search, I realized I have no clue about telephone technology and only found rather expensive models.

Adding a Fritzbox just for DECT also seems like a bad idea, right?

Are there any simple and affordable options without additional base stations?