Thread: Broadband to PSTN?

If I understand what you're asking for correctly (effectively to use a modem over a voip service?), I think you're going to struggle to find someone able to do it, as most voip systems don't have the quality for it - e.g. see http://www.soft-switch.org/foip.html - it's about faxing over a voip network, but it's effectively the same thing.

I guess you might be able to get some way of sending the actual data rather than raw modem signals, and so effectively actually having a modem at the other end. It would be easy enough to do, you're just tunnelling a serial port but I'd be surprised if there was a market to make doing it worthwhile...

Hi Alex

Thanks for the reply.

If I understand what you're asking for correctly (effectively to use a modem over a voip service?),

Guess so...

What I'm looking to achieve is: laptop -> broadband -> PSTN (0800 number). i.e. user has broadband but wants to dial a traditional 0800 phone number, but using data rather than voice.

I suppose VoIP perhaps is basicall what I'm looking for as you say but does it support v38 or simila used to tx data over PSTN? Off to look at your link..

Lea

Originally Posted by LeaUK2

What I'm looking to achieve is: laptop -> broadband -> PSTN (0800 number). i.e. user has broadband but wants to dial a traditional 0800 phone number, but using data rather than voice.

User has b/band, so they have a phone-line, so just use the phone :P

Generally if the quality of the *phoneline* is cr'p then the quality of any b.band services over the same phoneline is significantly worse.

I'd be suprised if using voip ased on your comments anyone woudl veen hear it, let alone be able to receive a fax, and certainly not transit data.

If this is critical, but some mobiles and serial cables and use that.
If this is just annoying complain to BT - at least you'll never have another phone bill to pay.

Generally if the quality of the *phoneline* is cr'p then the quality of any b.band services over the same phoneline is significantly worse.

I would generally agree here, but the issue is that BT are trunking PSTN over VoIP networks and Alex's article clearly notes the issues with this process in terms of data - not voice.

I'd be suprised if using voip ased on your comments anyone woudl veen hear it, let alone be able to receive a fax, and certainly not transit data.

If this is critical, but some mobiles and serial cables and use that.
If this is just annoying complain to BT - at least you'll never have another phone bill to pay.

BT simply say 'it's not us' - we know different!

The issue is BT's national roll out of their new 21st Century network in combination with PSTN and v.3xbis. BB is fine, v.3x over PSTN is extremely poor. The issue is based on area and only affects users for a period of time.

We have 1400 users attempting to dial into an 0800 around the UK and we have carried out all the normal checks. The conclusion is BT's transitional implementation due to the transitional nature of the problem.

Unfortunately having users failing to dial in prevents them working effectively and in most cases at all. Of course the solution is to provide a VPN end-end connection (which is being investigated/implemented shortly), but I was rather hoping for a intermediate solution - but unfortunately that doesn't appear to available

If this is critical, but some mobiles and serial cables and use that.

Good suggestion, we are looking at this too

Lea