3 ms·

It's not that bad. ATZ and ATDT are the main two you have to remember. Wait, is that not what we're talking about? So, it has a confusing name too?

bombcar 4y ago
NO CARRIER
cbsmith 4y ago
Honestly, that's what I thought it was talking about when I read the headline.
LVB 4y ago
Why the rush? ATDP
- m463 4y ago
  ,,,
banana_giraffe 4y ago
I still have burned into my head the dangers of ATM ATS11=50 And a script to keep doing ATDT##### in a loop till it got through a busy signal, only to find out that short DTMF tones aren't always recognized, and seemingly the tones for "9" and "1" and "1" work when others didn't. Explaining to my parents why there was a cop at the door complaining that the 911 operators were mad at us was fun.
shanebellone 4y ago
I started documenting the GSM command set. It's one of those things that warrants a cheat sheet. Never will I ever retain that crap.
sleepybrett 4y ago
Yeah I came here to talk some Hayes
a2800276 4y ago
Came here to see if anyone else was thinking of Hayes commands! Agree, those suck too. Might be worth it to keep this thread in mind next time I have to deal with them to remind myself that new shiny things can be even shittier :) While I am here: is anyone aware of a solid client library for handling AT commands? Ideally, suited for an embedded environment so C, no POSIX, no malloc, but really anything would do. Even just a solid implementation of handling the client to steal ideas & code from?
sph 4y ago
+++ATH0 I hope I have just disconnected someone browsing this page with a dialup modem.
- LeoPanthera 4y ago
  It only works if you're sending it, so you have to put it in a ping payload, to make a "ping of death". This only works because Hayes patented the idea of the escape code being +++ followed by a delay, so to evade the patent, most other modem OEMs removed the delay requirement.
- TMWNN 4y ago
  That's ridiculous. No way that sti&(*&( NO CARRIER
thepostman0 4y ago
It's not bad when considering they needed to not get in the way too much with 300 baud and less and work from human input.
fsckboy 4y ago
ATDT? fancy! I started out using ATD but, when I upgraded to touchtone, I remember the local access number for Compuserve in Watertown MA played The Camp Town Ladies (without the doo dah)
Findecanor 4y ago
As a keyboard nerd, I was expecting it to be about the IBM PC/AT keyboard wire protocol.
ciex 4y ago
There's only so many few letter combinations and we should reuse them.
- JohnFen 4y ago
  Reusing obsolete ones make sense, but the Hayes AT protocol is still in very active use. Sadly.

bombcar 4y ago

NO CARRIER

cbsmith 4y ago

Honestly, that's what I thought it was talking about when I read the headline.

LVB 4y ago

Why the rush? ATDP

m463 4y ago
,,,

banana_giraffe 4y ago

I still have burned into my head the dangers of ATM ATS11=50 And a script to keep doing ATDT##### in a loop till it got through a busy signal, only to find out that short DTMF tones aren't always recognized, and seemingly the tones for "9" and "1" and "1" work when others didn't. Explaining to my parents why there was a cop at the door complaining that the 911 operators were mad at us was fun.

shanebellone 4y ago

I started documenting the GSM command set. It's one of those things that warrants a cheat sheet. Never will I ever retain that crap.

sleepybrett 4y ago

Yeah I came here to talk some Hayes

a2800276 4y ago

Came here to see if anyone else was thinking of Hayes commands! Agree, those suck too. Might be worth it to keep this thread in mind next time I have to deal with them to remind myself that new shiny things can be even shittier :) While I am here: is anyone aware of a solid client library for handling AT commands? Ideally, suited for an embedded environment so C, no POSIX, no malloc, but really anything would do. Even just a solid implementation of handling the client to steal ideas & code from?

sph 4y ago

+++ATH0 I hope I have just disconnected someone browsing this page with a dialup modem.

LeoPanthera 4y ago
It only works if you're sending it, so you have to put it in a ping payload, to make a "ping of death". This only works because Hayes patented the idea of the escape code being +++ followed by a delay, so to evade the patent, most other modem OEMs removed the delay requirement.
TMWNN 4y ago
That's ridiculous. No way that sti&(*&( NO CARRIER

thepostman0 4y ago

It's not bad when considering they needed to not get in the way too much with 300 baud and less and work from human input.

fsckboy 4y ago

ATDT? fancy! I started out using ATD but, when I upgraded to touchtone, I remember the local access number for Compuserve in Watertown MA played The Camp Town Ladies (without the doo dah)

Findecanor 4y ago

As a keyboard nerd, I was expecting it to be about the IBM PC/AT keyboard wire protocol.

ciex 4y ago

There's only so many few letter combinations and we should reuse them.

JohnFen 4y ago
Reusing obsolete ones make sense, but the Hayes AT protocol is still in very active use. Sadly.