topic Re: BT Digital Voice not using BSH2 ? in Broadband

BT Digital Voice not using BSH2 ?

rbjtech — Wed, 20 Jul 2022 17:59:25 GMT

Hi,

I'm trying to use the supplied Digital Voice DECT Phone (Cloud Voice Express) as part of the Business Halo Bundle with a 3rd party router/firewall.

Hardware is a W70B + W73H

I've allowed all the necessary outbound ports - and thus Outbound calls appear to be fine. I have successfully made an outbound call to a mobile without using the BSH2.

However, on inbound calls, I get 'Number not Valid' on the Mobile. I've tried forwarding the BT 'Digital Voice' WAN ports to the end DECT device - and I am seeing some incoming hits on the f/w (being NAT'd and allowed), suggesting something is trying to connect - but the incoming call does not ring.

edit - I just tried via the BSH2 - same issues - I can call outbound fine but no incoming calls - results in 'Number not Valid' on the calling mobile - perhaps I have a wider issue ?

Any help appreciated. 😀

Thanks.

Re: BT Digital Voice not using BSH2 ?

BethM — Thu, 21 Jul 2022 09:19:29 GMT

Hi rbjtech

How strange, sorry your incoming calls are failing. I'm looking into this for you now and will contact you shortly.

Re: BT Digital Voice not using BSH2 ?

rbjtech — Thu, 21 Jul 2022 09:49:50 GMT

Thanks Beth - I've pinged you on PM.

Re: BT Digital Voice not using BSH2 ?

gibsongilbert — Mon, 25 Jul 2022 14:00:41 GMT

@rbjtech wrote:
Hi,
I'm trying to use the supplied Digital Voice DECT Phone (Cloud Voice Express) as part of the Business Halo Bundle with a 3rd party router/firewall.

edit - I just tried via the BSH2 - same issues - I can call outbound fine but no incoming calls - results in 'Number not Valid' on the calling mobile - perhaps I have a wider issue ?

Any help appreciated. 😀

Thanks.

I also had similar issue so, I gave up on using my landline for voice calls a while ago, and rely instead on Wi-Fi calling on my iPhone, or various voip services (FaceTime, WhatsApp etc).

I imagine the most difficulty will come from incompatibility with alarm systems and the like, but I’m sure that the vendors will develop solutions.

Using your own modem/router rather than the ISP’s does seem to prevent using their digital voice services however. It’s the same with Sky - you have to use their router. The solution in this case is to port your landline number to a SIP provider I think.

Re: BT Digital Voice not using BSH2 ?

rbjtech — Mon, 25 Jul 2022 14:43:06 GMT

Hi - Thanks for the post.

The Cloud Voice Express service (the DECT IP Base Station) is effectively a stand alone VOIP hub and has it's own MAC address which is registered with BT as the VOIP access point. As far as I am aware, it's totally independent from the BT Business Smart Hub - unlike the residential 'Digital Voice' which does need the Smart Hub as that also acts as the VOIP access point.

The odd thing is I can dial out/connect without any issues - and I can see incoming traffic on the f/w ports I have allowed during testing hitting the DECT base IP- so I don't *think* it's a network connectivity issue.

Once it's working - According to the official BT documentation, I shouldn't need to allow any WAN Incoming Ports - It should purely work on Outbound port rules..

If I get it working - I'll update this thread .. 😀

Re: BT Digital Voice not using BSH2 ?

rbjtech — Thu, 28 Jul 2022 10:32:08 GMT

Quick update - BT have confirmed there is a configuration issue on their side going from the PSTN to the BT Cloud Voice net for my number. BTCV > BTCV calls and BTCV > PSTN are ok.

So technically, from a network perspective - my setup not using the BSH2 is working just fine. 😀

Just need BT to fix their end and I should be good.

Once it's all working - I'll post the details of the outbound IP ports used (public knowledge, provided by BT) - as this may be helpful for others in the future in association with this post.

Re: BT Digital Voice not using BSH2 ?

rbjtech — Fri, 24 Nov 2023 17:19:14 GMT

So despite the industrial action by BT today - it appears somebody was working as the fault has now been fixed and I can finally get incoming calls. 😀

In summary- if you have no firewall rules blocking general outbound internet connectivity - then by using the DECT Yealink IP base station (Cloud Voice Express) is literally a case of it being given a DHCP address from the local network/router and registering with BTCV. It does not need any inbound ports to be opened.

If however you also block/restrict outbound connectivity (as I do) then you will need to open the SIP and RTP ports listed on Page 4 of the following BT provided PDF.

CustomerFirewallandLANGuide.pdf (bt.com)

If the link ever dies - then these are copied here -

Re: BT Digital Voice not using BSH2 ?

vidinsta — Sat, 12 Nov 2022 08:13:25 GMT

Remove the firewall and let DHCP give it an IP address 😀

Re: BT Digital Voice not using BSH2 ?

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Re: BT Digital Voice not using BSH2 ?

frankieHerry — Sun, 09 Jul 2023 11:07:28 GMT

In today's digital age, communication plays a vital role in both personal and professional settings. BT Digital Voice is a popular service that enables users to make voice calls over the Internet. However, there has been speculation about BT Digital Voice not utilizing BSH2 (Broadband Secure Hub 2) technology. In this article, we will delve into the details of BT Digital Voice and explore the reasons behind its non-utilization of BSH2.

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