Newbie - connecting 2 phones to router

I am about to get Hyperoptic, they are installing in my block this week.
I see that the phone service is VOIP and if I have the ZTE router, it seems there are two phone sockets, see https://www.hyperoptic.com/faq/posts/setting-up-your... for reference.
Does this mean that two phones can be connected to this router? It is a ZTE H298A.
If so, would both phones ring when there is an incoming call? Or would the second phone need a separate telephone number to work?
I am new to VOIP and wondering what is the best way to get 2 or more phones on the Hyperhub via VOIP or similar to replace the analog phones on a BT line.

BTW, I tried searching the manual (on the Hyperoptic website) for "phone" and it is not even mentioned.

Edited by avoura (Wed 01-Sep-21 19:53:39)

I think it's only active on one port, unless something has changed, however unless you want two phones right next to the router, the best option is to connect a DECT base station to the router and then the additional handsets registered to that instead.

I use a Gigaset SIP/DECT base station connected to my own router.

From Hyperoptic site

https://www.hyperoptic.com/help/phone-service/

How many handsets can I use?
You can connect one handset to your router at a time. Connecting more than one handset at the same time can cause the phone signals to collide, meaning neither will work.

If you have any questions, please get in touch with our Customer Service team at [email protected] or call us on 0333 332 1111.

you can also install your own little IP phone box - HO CS folks can give you the settings to plug in

that way you can run as many lines as supported by the box ( I use a grandstream 812)