Questions tagged [modem]

Discussion of retrocomputing modems.

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24
votes
7answers
5k views

Why were “data modems” so much more expensive compared to “fax modems” back in the day?

In 1997, my uncle visited and gave me a "fax modem" which he installed on our 486 PC and then managed to transfer over a fax document from a real fax in his home to our computer, running ...
3
votes
1answer
134 views

Networking WfW 3.11 between modern ethernet and 56k internal modem card

Is there any way i could use either of those networking cards and use them on a modern ethernet system? We have aDSL where i live. If i couldnt connect it to my home network, is there any way i could ...
4
votes
0answers
103 views

Did Hayes and/or other modem companies ever add TDD capability to their modems?

A Telecommunication Devices for the Deaf (TDD, aka Text Telephony (TTY)) was an early modem capability to allow deaf people to use telephones by including a keyboard and output device (such as ...
80
votes
9answers
18k views

Why did modems have speakers?

Everyone who used early telecommunications services, not to mention the early dial-up Internet services, is familiar with the tones and hissing sounds of a modem establishing a connection. I recall ...
32
votes
5answers
2k views

Why did the Bell 103 modem use a data rate of 300 bps?

Virtually every telephone modem in existence runs at a data rate that's a multiple of the Bell 103A's 300 bps. Why was the base 300 bps chosen in the first place?
19
votes
1answer
660 views

How did XBAND modems transmit game state?

The XBAND Video Game Modem and Network allowed owners of Sega Genesis and Super Nintendo game systems to play head-to-head over a phone line in 1994, before "twitch" gaming over the Internet was ...
29
votes
3answers
2k views

What was the technical reason behind the octal digits used for CompuServe User IDs?

On CompuServe in the 1990's, my ID was "73313, 3443". I still remember it today because it was (seemed) way more important to me than any phone numbers I ever memorized. According to Wikipedia: ...
7
votes
2answers
747 views

Creating Null Modem Connection between two C64s?

Trying to establish a null modem connection between 2 C64s using 1 Commodore 1660 300 Baud modem and 1 Commodore 1670 1200 Baud modem. Does anybody have detailed instructions on how to configure the ...
4
votes
2answers
576 views

TCP over RS-232 with Windows 3.1 and Internet Explorer 5 dialer

I am restoring a Windows 3.1 computer that has Internet Explorer 5 installed. I would like to connect it to the internet using a Linux-based laptop as an intermediary. The physical connection is ...
1
vote
1answer
222 views

How was the modem MNP protocol implemented in software?

When first modems for PCs started to appear in the USSR in late 1980s, they usually were in the form of an ISA card, and supported a bare minimum of the Hayes AT commands. Given the quality of Soviet ...
5
votes
1answer
548 views

Windows 98 SE PC refusing to network using NIC/modems

The problem is basically as the title stated. I have a Compaq Presario PC from the late 90s running Windows 98 Second Edition. It was handed down so I'm not exactly sure what it went through in its ...
5
votes
4answers
603 views

Cartridge modems - was the Vic-20 a special case?

'The Home Computer Wars' has this to say about the development of the cartridge modem for the Vic-20: The size of the case was another problem. Most modems came in bulky rectangular boxes about 10 ...
8
votes
4answers
548 views

When did 1200bps become the modal speed of installed modems?

Telephone line modems were important in home and business computing for decades. Like a lot of people, I started with a Hayes Smartmodem 300. The modem came out in 1981 but I got mine about 1990. By ...
19
votes
1answer
498 views

What was the service offered by US Sprint for long distance data connections in the late 1980's?

Back in the 1980's long distance telephone calls were ridiculously expensive. This led more than one young aspiring geek to misuse the phone network when making those oh so important calls to BBS's ...
3
votes
2answers
394 views

Setting up and using UUCP (with analog modems)

These days, of course, we have the Internet, but back in the day, there was Unix to Unix Copy - UUCP. In its heyday it was a terrific way to get email and other simple data moving across the world, ...
3
votes
1answer
88 views

Telebit QBlazer modem manual

Inspired by another post here, I recently purchased a Telebit QBlazer modem and am having some fun with it. It did not, however, come with a user manual, nor can I find one online. In the absence of ...
3
votes
1answer
406 views

What modem was a little black cube about 1.25" on each side?

I used to have a modem that was a little black cube about 1.25" on each side. Maybe a little bigger. 19.2Kbaud I think. I can't remember the name of the company or the model or anything and searches ...
70
votes
6answers
8k views

What technological factors drove the rise of “high-speed” modems in the early 1990s?

The first inexpensive modem I ever purchased was a 300 baud direct-connect unit for the C64 User Port in late 1983. I recall that a couple of years later (1986), 1200 baud modems were affordable and I ...
10
votes
1answer
768 views

Whatever happened to the janus protocol

Back in the day, when I was running a bbs, blinkyterm was just coming out with the new janus bidirectional file transfer protocol which was hoped to displace zmodem et al for bbs to bbs file transfer (...