hayes.txt

使用efax的fax工具程序

TECHNICAL REFERENCE FOR HAYES (TM) MODEM USERS

15 Sept 1992
Version P2.0

Hayes Microcomputer Products, Inc.
P.O. Box 105203
Atlanta, Georgia 30348 U.S.A.

(c) 1990, 1992 Hayes Microcomputer Products, Inc.
All rights reserved.

44-00012 AA H32 (BBS Version)
Note: This version of the "Technical Reference for Hayes Modem Users" is a 
special version edited for bulletin-board downloading. As a plain ASCII 
character file, it therefore cannot contain any of the illustrations and 
graphic elements provided in the printed version.

------------------------------------------------------------------------

I - Internal Memory Tests

The various forms of the I command instruct the modem to query its 
memory for information about itself. The results of these tests are 
frequently used by programmers to determine compatibility with software. 
Because these commands request information about the modem's firmware, 
they are not run when a connection has been established with a remote 
modem.

I0 - Display Product Code

This option reports the product code of the modem to the DTE. The modem 
produces information text dependent upon its highest DCE line speed. The 
responses below are examples:

Result Codes     Description
------------------------------------------------------------------------
300              Smartmodem 300.
120              Smartmodem 1200, Smartmodem 1200B, Smartmodem 1200C, 
                 Smartmodem 1200A.
240              Smartmodem 2400, Smartmodem 2400B, Smartmodem 2400P, 
                 Smartmodem 2400Q, Smartmodem 2400M, V-series Smartmodem 
                 2400, V-series Smartmodem 2400B, V-series Smartmodem 
                 2400 Quad, V-series Smartmodem 2400M, Smartmodem OPTIMA 
                 (TM) 24, Smartmodem OPTIMA 24 + FAX96, 
                 ACCURA (TM) 2400 EC/FAX96.
960              Smartmodem 9600, V-series Smartmodem 9600, V-series 
                 Smartmodem 9600B, V-series ULTRA (TM) Smartmodem 2400, 
                 V-series ULTRA Smartmodem 9600, V-series ULTRA 24 with 
                 Express 96, Smartmodem OPTIMA 9600, Smartmodem 
                 OPTIMA 96 + FAX96, ACCURA 9600 EC/FAX96.  
14400            V-series ULTRA Smartmodem 14400, Smartmodem OPTIMA 144, 
                 Smartmodem OPTIMA 144 + FAX144, ACCURA 14400 EC/FAX144. 
------------------------------------------------------------------------

I1- Display ROM Checksum

The I1 command instructs the modem to calculate the value of the ROM 
checksum. The response is a number, the sum of all of the bytes in ROM.

I2 - Perform ROM Checksum

This command instructs the modem to verify the ROM checksum. Depending 
on whether the ROM checksum has been found to be correct, the modem 
produces text that resembles a result code. The modem memory test 
compares the ROM checksum and tests it against the correct sum, also 
stored in ROM. Rather than returning a numeric value as in I1, the I2 
command generates a result code. When the checksum is valid, the 
response is: OK. When the ROM checksum fails, the modem responds with 
ERROR.

I4 -  Identify Product Features

The capabilities and features of the modem are encoded into a string of 
text that consists of several strings that are ASCII character 
representations of hex numerals which are bit-mapped. The first 
character of each string identifies which bit maps are in that string. 
For example, the "a-string" starts with a lower case "a" and identifies 
most of the basic modem capabilities such as modulation standards 
supported and support for AutoSync.

Since the following tables identify features for Hayes modem products, 
the values included here and the number of strings are subject to change 
and expansion. The maximum length per string is 40 characters.

The I4 text is displayed in the following form:

     a097800C204C264
     bF60410000
     r1031111111010000
     r3000111010000000

surrounded by additional <CR> and <LF> characters as are required by the 
V command option in effect. According to convention, all <CR> and <LF> 
characters are defined by S3 and S4, respectively. The meanings of the 
a, b, r1, and r3 strings currently defined are described below.

I4 "a" String
The first string, the a-string, is composed of the ASCII character "a" 
followed by a series of hexadecimal characters (D1-D16 in this example). 
The bit map for each byte is defined below.

a D1 D2 D3 D4 D5 D6 D7 D8 D9 D10 D11 D12 D13 D14 D15 D16 D17 D18....

------------------------------------------------------------------------
D1, D2     Reserved
D3         Bit 3: Indicates modem based on SM1200FE commands 
           Bit 2: Indicates modem based on SM2400 commands 
           Bit 1: Indicates that modem supports &J commands
           Bit 0: Indicates that modem supports &L commands 
D4         Bit 3: Indicates that modem supports AutoSync (&Q4)
D5         Bit 3: Plug-in board modem product
           Bit 2: Standalone modem product
           Bit 1: Supports &H0 through &H4
           Bit 0: Supports &I0 through &I4 
D6         Bit 3: Reserved
           Bit 2: Supports M4 command
           Bit 1: Supports 32-bit FCS (frame check sequence 
           for AutoSync)
           Bit 0: Supports AutoSync II
D7         Bit 3: Supports V.22 at 1200 bps (B0)
           Bit 2: Supports 212A (B1)
           Bit 1: Supports ASB in V.23 75 bps xmt/1200 bps rcv (B2)
           Bit 0: Supports ASB in V.23 1200 bps xmt/75rcv (B3)
D8         Bit 3: Supports V.23 1200 bps xmt/75 bps rcv (B4)
           Bit 2: Supports V.23 1200 half duplex (B5)
           Bit 1: Supports V.23 75 bps xmt/1200 bps rcv (B10)
           Bit 0: Supports V.23 75 bps xmt/600 bps rcv  (B11)
D9         Bit 3: Supports V.21 100/300 bps (B15)
           Bit 2: Supports ASB in V.23 75 bps xmt/600 bps rcv (B20)
           Bit 1: Supports ASB in V.23 600 bps xmt/75 bps rcv (B21)
           Bit 0: Supports V.23 600 bps xmt/75 bps rcv  (B22)
D10        Bit 3: Supports V.23 600 bps half-duplex (B23)
           Bit 2: Supports V.22bis at 2400 bps (B30)
           Bit 1: Supports V.27ter at 2400 bps (B31)
           Bit 0: Supports V.27ter at 4800 bps  (B40)
D11        Bit 3: Supports V.32 full duplex at 4800 bps (B41)
           Bit 2: Supports Express 96 at 4800 bps (B42)
           Bit 1: Reserved
           Bit 0: Supports V.29 half duplex at 4800 bps (B44)
D12        Bit 3: Supports V.29 half duplex at 7200 bps (B50)
           Bit 2: Supports V.32 full duplex at 9600 bps (B60)
           Bit 1: Supports Express 96 at 9600 bps (B61)
           Bit 0: Reserved
D13        Bit 3: Supports V.29 half duplex at 9600 bps (B63)
           Bit 2: Supports 103 110/300 bps (B16)
           Bit 1: Supports V.32bis (7200/12000/14400 bps)
           Bit 0: Reserved
------------------------------------------------------------------------

------------------------------------------------------------------------
D1, D2      Reserved
D14         0: Reserved
            1: Personal Modem 1200
            2: Personal Modem 2400
            3: Personal Modem 1200 Plus
            4: Personal Modem 2400 Plus
            5: Pocket Edition
D15         Bit 3: Reserved
            Bit 2: Supports $ dial modifier and NO DIALTONE result code.
            Bit 1: Supports S95 Bit 5 for COMPRESSION: result code
            Bit 0: Supports S95 Bit 4 for AUTOSTREAM: result code 
D16         Bit 3: Supports S95 Bit 3 PROTOCOL: result code
            Bit 2: Supports S95 Bit 2 CARRIER result code
            Bit 1: Supports S95 Bit 1 CONNECT/ARQ result code
            Bit 0: Supports S95 Bit 0 CONNECT XXXX (for DCE rate) 
------------------------------------------------------------------------

I4 "b" String

The second string, the b-string, is composed of the ASCII character "b" 
followed by a series of hexadecimal characters (D1-D9). The bit map for 
each character is defined as follows:

b D1 D2 D3 D4 D5 D6 D7 D8 D9....

------------------------------------------------------------------------
D1          Bit 3: V.42 Alternate Protocol Supported
            Bit 2: V.42 LAPM Protocol Supported
            Bit 1: X.25 Protocol Supported
            Bit 0: LAPB (Point-to-point error control) protocol supported
D2          Bit 3: Reserved (should be set to zero)
            Bit 2 MNP (TM) Class 5 supported
            Bit 1: V.42bis supported
            Bit 0: Compression through the X.25 network supported
D3/D4       These combine to indicate the number of AutoStream 
            Type A channels which are supported. The formula 
            (D3*16 + D4) is used. Zero means AutoStream is not supported
D5          Bit 3: Reserved
            Bit 2: Reserved
            Bit 1: Adjustable startup (ASU) is supported
            Bit 0: Negotiates adjustable startup
D6          Bit 3: &K5 not supported
            Bit 2: &K5 supported
            Bit 1: Unidirectional flow control
            Bit 0: S105 N104 parameter supported
------------------------------------------------------------------------

I4 "r1, r2" and "r3" strings

These ID strings allow software to determine the available speeds that 
may be used to send AT commands. The r1-string contains a bit map that 
indicates at which DTE rates the autobaud process is supported.

The presence of the r2-string in the I4 result infers that S87 is 
supported and is required for autobauding at the higher speeds. To 
autobaud at one of the speeds indicated in the r2-string requires that 
S87 be set to match that speed. 

The r3-string is issued if synchronous DTE speeds are supported. The map 
indicates which DTE rates are supported in synchronous modes. Each r-
string begins with the lower case letter "r" and may be followed by as 
many as 39 additional characters, not counting <CR><LF>'s that will be 
used to separate them from other strings. Those 39 additional characters 
are limited to the ASCII-HEX alphabet 0-9 and A-F.

After the two lead-in characters (i.e., r<n>), all subsequent characters 
contain the DTE rate maps. All maps have the same mapping for 
convenience to software. (Refer to the following chart.) Not all bit 
assignments are possible: for example, the split speeds have no meaning 
in the r3 synchronous map and are always filled with zeros.

In r1, if the bit is filled with a 1, the corresponding DTE rate is 
supported for sending AT commands to the device. A zero indicates that 
DTE rate is not supported for AT commands.

In the r3 map, the bits simply indicate which DTE rates are supported 
for synchronous operation on-line. This does not indicate, however, the 
supported rates for synchronous V.25bis commands.

Split speeds if available are marked in the r1 string only when the 
appropriate B command option has been selected. Future expansion of 
these strings may include new speeds that are not in strict ascending 
order.

DTE Rate Bit Map for r1, r2 and r3 Strings

Character    Bit #       DTE Rate
------------------------------------------------------------------------
 3:  1       bit 0       45.45 bps
     2       bit 1       50
     4       bit 2       75
     8       bit 3       75/600 (xmt is 75, rcv is 600) 
 4:  1       bit 4       75/1200
     2       bit 5       110
     4       bit 6       134.5
     8       bit 7       50
 5:  1       bit 8       300
     2       bit 9       450
     4       bit 10      600
     8       bit 11      600/75
 6:  1       bit 12      1200
     2       bit 13      1200/75
     4       bit 14      1800
     8       bit 15      2000
 7:  1       bit 16      2400
     2       bit 17      3000
     4       bit 18      3600
     8       bit 19      4200
 8:  1       bit 20      4800
     2       bit 21      5400
     4       bit 22      6000
     8       bit 23      6600
 9:  1       bit 24      7200
     2       bit 25      7800
     4       bit 26      8400
     8       bit 27      9000
10:  1       bit 28      9600
     2       bit 29      12000
     4       bit 30      14400
     8       bit 31      16800
11:  1       bit 32      19200
     2       bit 33      21600
     4       bit 34      24000
     8       bit 35      26400
12:  1       bit 36      28800
     2       bit 37      31200
     4       bit 38      33600
     8       bit 39      36000
13:  1       bit 40      38400
     2       bit 41      43200
     4       bit 42      48000
     8       bit 43      52800
14:  1       bit 44      56000
     2       bit 45      57600
     4       bit 46      62400
     8       bit 47      64000
15:  1       bit 48      67200
     2       bit 49      72000