哪个标准规定了 AT&W AT 命令?

发布于 2024-08-03 23:10:53 字数 895 浏览 6 评论 0原文

在和同事讨论如何处理AT命令时, 我们发现与我们的信念相反的是命令 V.250 中未指定 AT&W(存储用户配置文件) (它只指定 ATZAT&F,它们是相关的), 让我们想知道 - 那么它是在哪里指定的呢?

更新:是的,我们预计该命令的起源是 Hayes命令集,几乎包含所有基本语法命令。 不过,海耶斯的大部分指挥都已被导入正式的 标准,例如 ITU 的 V.25027.007 由 3GPP 制定。 由于 V.250 没有导入这个命令,我们想知道 这可能是因为它是在其他一些标准中指定的。

无论如何,其他标准已经定义了各种命令。 这是我在源代码中添加的评论的摘录 去年我使用 AT+VTS 命令时 (顺便说一下,它是最不标准的 我见过的参数语法!)。

原来的AT+VTS命令 源于标准 TIA/EIA/IS-101,“传真数字 接口 - 语音控制临时 异步 DCE 标准”来自 1993 年 电信行业 协会。现在这个规范 撤回并且AT+VTS命令是 现已在 ITU-T V.252 中指定 “V.70 的控制程序和 DTE 的 H.324 终端”。

有没有人参考正式标准/文档 (如上)定义了 AT&W ?我们不只是在寻找 某些随机调制解调器的制造商文档(原始 Hayes 调制解调器除外)。

While discussing how to process AT commands with a colleague,
we discovered that contrary to our belief the command
AT&W (store user profile) is not specified in V.250
(it only specifies ATZ and AT&F, which are related),
leaving us wondering - where is it specified then?

Update: Yes, we expected the command to have its origin in the
Hayes command set, virtually all the basic syntax commands does.
However, most of the Hayes command have been imported into formal
standards like V.250 by ITU or 27.007 by 3GPP.
Since V.250 did not import this command we were wondering
that it might be because it was specified in some other standard.

And in any case other standards have defined various commands.
Here is an extract from a comment I put in the source code
when I were working with the AT+VTS command last year
(which has by the way the most non-standard
parameter syntax I have ever seen!).

The AT+VTS command originally
originates from the standard
TIA/EIA/IS-101, "Facsimile Digital
Interfaces - Voice Control Interim
Standard for Asynchronous DCE" from
1993 by Telecommunications Industry
Association. This specification is now
withdrawn and the AT+VTS command is
now specified in ITU-T V.252
"Procedure for control of V.70 and
H.324 terminals by a DTE".

Does anyone have a reference to a formal standard/documentation
(like above) that defines AT&W ? We are not just looking for
manufacturer documentation of some random modem (unless for the original Hayes modems).

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评论(2

爱给你人给你 2024-08-10 23:10:53

经过一番搜索后,我想我已经找到了我正在寻找的答案,但是如果您碰巧引用了包含 AT&W 的标准,请添加其他答案。

Hayes 文档

虽然我没有找到 Smartmodem 1200 或 Smartmodem 2400 调制解调器的任何手册,
我找到了一篇名为Hayes调制解调器用户技术参考的论文
其中关于 AT&W 的内容如下:

&W - Write Active Profile to Memory

The &W command stores certain command options and S-register values into 
one of the modem's two nonvolatile stored profile memory locations. The 
command options and register values stored depend on the particular 
modem. These are indicated in the user documentation for your modem. 
In addition, the AT speed and parity are stored, according to the values 
used at the time the command is issued.

------------------------------------------------------------------------
&W0     Store the Active Profile into Stored Profile 0
&W1     Store the Active Profile into Stored Profile 1
------------------------------------------------------------------------

我认为这或多或少涵盖了 Hayes 制造的所有调制解调器,因此我认为这可能是我得到的最官方的参考资料。

其他标准

V.25ter/V.250 的(旧)替代规范是 TIA/EIA-602,其标题为“数据传输系统和设备 - 串行异步自动拨号和控制”。根据 Hayes 命令集信息

TIA/EIA-602 几乎与
中找到的数据特定命令
智能调制解调器 1200 和智能调制解调器 2400

但规范并未包括所有内容,
TIA/EIA-602 也称为“最小 AT命令集”。
根据 Frank Durda 的 AT & 前缀命令集参考

仅限 EIA/TIA-602 标准
指定三个 AT 命令
& 符号前缀:&C、&D 和 &F。全部
其他带有&符号的AT命令
前缀源自 Hayes
Smartmodem 2400、Hayes Ultra 14,400 或
是其他的专有功能
制造商。

然后我将其解释为意味着 Hayes Smartmodem 定义了 AT&W 但 EIA/TIA-602 没有导入它(很可能),或者它是在 EIA/TIA-602 创建后引入的某个点(不太可能)。

任何人都可以获得原始的 Hayes Smartmodem 手册吗?

After some searching I think I have found answers to what I was looking for, however please add additional answers if you happen to have a reference to a standard containing AT&W.

Hayes documentation

While I have not found any manual for the Smartmodem 1200 or Smartmodem 2400 modems,
I found a paper called Technical Reference for Hayes Modem Users
which says the following about AT&W:

&W - Write Active Profile to Memory

The &W command stores certain command options and S-register values into 
one of the modem's two nonvolatile stored profile memory locations. The 
command options and register values stored depend on the particular 
modem. These are indicated in the user documentation for your modem. 
In addition, the AT speed and parity are stored, according to the values 
used at the time the command is issued.

------------------------------------------------------------------------
&W0     Store the Active Profile into Stored Profile 0
&W1     Store the Active Profile into Stored Profile 1
------------------------------------------------------------------------

I assume this covers more or less all modems made by Hayes, so I think this probably is the most official reference I get.

Other standards

An (older) alternative specification to V.25ter/V.250 is TIA/EIA-602 with title "Data Transmission Systems and Equipment - Serial Asynchronous Automatic Dialing and Control". According to Information On Hayes command set:

TIA/EIA-602 is almost identical to the
data-specific commands found in the
Smartmodems 1200 and Smartmodem 2400

but the specification is not including everything,
TIA/EIA-602 is also referred to as the "Minimal AT Command Set".
According to Frank Durda's AT Ampersand-Prefixed Command Set Reference

The EIA/TIA-602 standard only
specifies three AT commands with
ampersand prefixes: &C, &D and &F. All
other AT commands with ampersand
prefixes derive either from the Hayes
Smartmodem 2400, Hayes Ultra 14,400 or
are proprietary features of other
makers.

Which I then interpret to mean that either Hayes Smartmodem defines AT&W but EIA/TIA-602 does not import it (most likely) or that it was introduced after the creation of EIA/TIA-602 at some point (no so likely).

Anyone that has access to an original Hayes Smartmodem manual?

深爱不及久伴 2024-08-10 23:10:53

您正在寻找的称为 Hayes 命令集,由 Hayes 调制解调器而普及。早在 V.250 采用之前,它就已经是“事实上的”标准。

维基百科有一个简要描述和历史,微软有一个命令集摘要

What you're looking for is called the Hayes command set, popularized by the Hayes modem. It was a "de facto" standard long before it was adopted by V.250.

Wikipedia has a brief description and history, and Microsoft has a summary of the command set.

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