BBS accessable via modem over a SIP VoIP address?
reddit / bbs

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dirkt · 2016-09-30 11:10

Are there any BBS that can be accessed via a modem using a SIP VoIP
address?

I've taken my old modem out of storage and started to play around with
it. Right now it's connected to my Fritzbox router, and I'm looking
for something to do with it. I don't know any local BBS's, and I don't
have international flatrate, so I thought using SIP VoIP directly
should take care of that...

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dalml · 2016-09-30 15:23

It's certainly possible.  Back in the day, I used an external 14.4k
modem with my TiVo (for updates) using Vonage, though I'm not sure I
even connected above 9600 baud.  SIP is highly compressed, so you're
not going to get the best rates.  Sometimes you can control a volume
setting, or specify the usage is for FAX and get better luck.  There
probably aren't very many dial-up BBSs left though.

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Ebbis · 2016-09-30 15:47

I had the same thought half a year back.. since I didn't have SIP
VoIP,  I installed Elastix, bought a Asterix compatible PCI card,
hooked up a Supra Modem 14.400 to it and got online without any major
issues.
It's unstable when using higher speed, but at 2400 it's certainly
fine!

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recourse7 · 2016-09-30 19:32

Any linksys ata that supports fax will work.

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dirkt · 2016-09-30 22:27

Just to clearify: The problem is not connecting my own modem to VoIP
and dialing out via SIP (that works thanks to the Fritzbox), the
problem is finding a BBS that is reachable via a SIP-URI, instead of
or in addition to the "normal" telephone net.

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FozzTexx · 2016-09-30 23:54

Maybe I can look into it over the weekend. I'll have to move my
Elastix box over to the other LAN where I can open up the firewall.
And see if I can find a tutorial that doesn't involve fiddling with
conf files on how to configure Elastix and that extension with a SIP
URI.

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dirkt · 2016-10-01 05:20

To be reachable from the outside, you either need a static IP or some
service like dyndns which resolves your IP, and then you can run your
own SIP registrar which is directly accessible.

Or, you can register with a free SIP registrar like
[iptel](http://www.iptel.org/service) or
[linphone](http://www.linphone.org/free-sip-service.html) (if you
don't already have a another SIP registrar because you are already
using VoIP). In that case, you don't need to open a firewall, your
Elastix box should register as a SIP client with this SIP registrar,
and incoming connections will be activated via this registration.

**Edit**: Ah, but of course you already have `fozztex.com`, so maybe
the first variant is simpler.