2600.network Dialup Service
2600.network
2600.network Dialup Service
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Re: 2600.network Dialup Service
#2Sweet, I've been looking for one of these to test CSD calls out for the first time in like 20 years before GSM gets shut down on T-Mobile. There was one other service in Vancouver that probably shut down last year but I'm not sure data calls work internationally.
EDIT: This is that service if you are a Canadian that wants to try it, https://www2.vcn.bc.ca/free-internet-access-via-dial-up/
Re: 2600.network Dialup Service
#3How well can digital phone lines carry dial-up connections? It was an issue in the early days of digital lines - same as with fax. For fax we got v.34 and other improvements. IDK about dialup tho.
Re: 2600.network Dialup Service
#4How well can digital phone lines carry dial-up connections? It was an issue in the early days of digital lines - same as with fax. For fax we got v.34 and other improvements. IDK about dialup tho.
If you can run g.711 for your codec, things should work ok, depending on your jitter... g.711 is the digital calling code from 1972 that telcos used for T1/E1. On voip, it's packetized into 20ms bursts rather than multiplexed one sample at a time.
If you use one of the newer predictive voice codecs, expect a lot less success, but maybe moving to older/slower modem speeds will help.
Re: 2600.network Dialup Service
#5Projects like this warm my heart. There is a level of detail to appreciate on the capture of 2600, the POTS regional numbers ending in 2600, and BBS xfers.
Kudos to the owner, founder, and maintainers. You embody the spirit of 2600!
Re: 2600.network Dialup Service
#6Sweet, I've been looking for one of these to test CSD calls out for the first time in like 20 years before GSM gets shut down on T-Mobile. There was one other service in Vancouver that probably shut down last year but I'm not sure data calls work internationally. EDIT: This is that service if you are a Canadian that wants to try it, https://www2.vcn.bc.ca/free-internet-access-via-dial-up/
Could you theoretically use an analog modem (or worst case an acoustic coupler) over IMS (VoLTE etc., which should all have at least some QoS), or are the jitter rates and codecs too bad for that (like they often are for Fax over VoIP on fixed lines)?
I wonder if some of the networks that are continuing to offer GSM (usually via some core network emulations, as far as I understand, to make it more compatible with modern core networks) have already broken CSD for similar reasons.
Re: 2600.network Dialup Service
#7How well can digital phone lines carry dial-up connections? It was an issue in the early days of digital lines - same as with fax. For fax we got v.34 and other improvements. IDK about dialup tho.
Early digital lines were purely circuit switched and didn’t add any jitter (unlike modern VoIP based “lines”), so there shouldn’t have been any problems running analog or digital fax over these.
V.34 was mostly a speed improvement, as far as I remember, no?
Re: 2600.network Dialup Service
#8How well can digital phone lines carry dial-up connections? It was an issue in the early days of digital lines - same as with fax. For fax we got v.34 and other improvements. IDK about dialup tho.
Early digital lines were purely circuit switched and didn’t add any jitter (unlike modern VoIP based “lines”), so there shouldn’t have been any problems running analog or digital fax over these. V.34 was mostly a speed improvement, as far as I remember, no?
[deleted]
Re: 2600.network Dialup Service
#9FYI - 2600 Hz is a common handshake tone used in telco.
Hence why “2600” is referenced.
Re: 2600.network Dialup Service
#10How well can digital phone lines carry dial-up connections? It was an issue in the early days of digital lines - same as with fax. For fax we got v.34 and other improvements. IDK about dialup tho.
Early digital lines were purely circuit switched and didn’t add any jitter (unlike modern VoIP based “lines”), so there shouldn’t have been any problems running analog or digital fax over these. V.34 was mostly a speed improvement, as far as I remember, no?
I think WarOnPrivacy was thinking of the T.38 standard. Once T.38 gained enough adoption in the various providers fax over IP became far more reliable.
https://en.wikipedia.org/wiki/T.38
edit: That is I assume that they meant VoIP when they say digital phone lines. Fax over digital ISDN lines has been reliable since its inception as far as I am aware.