تنضيمات مودم در قسمت اكسترا ستينگ

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يك سري استرينگ ميتوان به مودم اضافه كرد و در واقع ميتوان مودم را دست كاري كرد
go to>> control panel>phone& modem>onthe modem tab>o to properties>select "advanced" tab> etra
settings zone
در اين قسمت ميتوانيم تنضيمات بخصوصي بكنيم مثلا اينكه مودم تا 5 ثانيه پس از قطع ارتبات سند كنه و قطع نشه
ولي من بلد نيستم

 

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آقا يكي جواب بده

 

[evanescence_net]

منم ميخوام بدونم......

 

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http://www.panix.com/help/modem/throttle.html

 

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56K Modem Throttle Adjustments:
Fine-tuning your modem's performance
56K modems push the outer edge of the bandwidth that can be transferred over an analog phone line. Depending on neighborhood, most people will only get connection speeds in the 40s, and some may not make it above 40K at all.

Most 56K modems are designed to find the fastest stable speed and connect there, automatically. Some models have trouble with this, however, and may try to use a higher speed than your line can support. If your modem does this, you may see lots of pauses and stalled downloads.

Fortunately, there is a workaround for this. If your dialer allows custom init strings (Microsoft Dial-Up Networking does, as does FreePPP for Mac), you can fine tune your modem for a particular range of connect speeds.

The bad news: there's no standard "throttle setting" for all modems. These change from brand to brand. We've included settings for the brands we know here. If you have throttle settings for a model we don't list, please let us know.

Common commands
Modem-specific settings

Common commands:

Most V.90 modems will also support one of the two proprietary 56K protocols (KFlex or X2). Within these two categories, some init string settings are consistent:

Setting accurate connect-speed reporting:
Most modems come from the factory set to display the "DTE" speed when connected. This is the speed between your computer and your modem, and is pretty much meaningless.

(This is also why your modem might seem to be going at outrageous speeds like 115K.)

If you want to see the actual "DCE" speed (the actuall speed of the modem-to-modem link) in the "Connected" display, you need to add a custom command to the init string.

For most brands, the W2 command will do this. There are a few exceptions:
Motorola ModemSURFR models use the \V0 command instead.
US Robotics, Megahertz, and 3Com modems don't seem to contain a way to change this. Sorry.

Setting V.90/X2 modems for X2-compatibility mode:
All modems with a US Robotics-affiliated chipset (all X2 or V.90/X2 modems) use the S32 register to control the connection type. Here are the settings:

S32=2 enables all available connect protocols.
S32=34 tells it to use V.90 instead of X2.
S32=66 tells it to use X2 instead of V.90.
S32=98 disables both X2 and V.90 (drops modem to 33.6K).
S32=114 forces modem to connect at 28.8K or below.

This can be very useful for troubleshooting.

If you have trouble connecting at V.90, try S32=66 to force X2. We've had a bunch of reports that X2 seems more stable than USR's V.90 with our equipment.

USR-affiliated modems all use the &N and &U AT commands to set the allowed speed range for X2 and V.90. If your modem isn't listed in the modem-specific section of this page, just look up those commands in your modem's user manual.

Modem-specific settings:

This section contains speed-control tables for models we've dealt with here at Panix, as a courtesy. If you have your modem's user manual, we recommend that you use its speed table, or at least check it against our copy before you start. (Modem makers love to change these things.)

X2 and X2/V.90 modems:
Connection speed is controlled with the &N and &U AT commands. &N sets the maximum speed, &U is the minimum.

If you declare a maximum speed with &N, be sure to declare a value to &U as well. (If you leave &U at 0, it'll take the &N value as the only allowed speed.

(In other words, if you customize &N, be sure to set &U to something above 0 too.)

Details for specific brands' &N and &U settings:

Cardinal X2-only:

14 = 28,800 bps V.34
15 = 31,200 bps V.34
16 = 33,600 bps V.34
17 = 28,800 bps X2
18 = 31,200 bps X2
19 = 33,600 bps X2
20 = 33,333 bps X2
21 = 37,333 bps X2
22 = 41,333 bps X2
23 = 42,666 bps X2
24 = 44,000 bps X2
25 = 45,333 bps X2
26 = 46,666 bps X2
27 = 48,000 bps X2
28 = 49,333 bps X2
29 = 50,666 bps X2
30 = 52,000 bps X2
31 = 53,333 bps X2
32 = 54,666 bps X2
33 = 56,000 bps X2
34 = 57,333 bps X2 US Robotics V.90/X2:

14 = 28,800 bps V.34
15 = 31,200 bps V.34
16 = 33,600 bps V.34
17 = 28,800 bps V.90
18 = 29,333 bps V.90
19 = 30,666 bps V.90
20 = 32,000 bps V.90
21 = 33,333 bps V.90
22 = 34,666 bps V.90
23 = 36,000 bps V.90
24 = 37,333 bps V.90
25 = 38,666 bps V.90
26 = 40,000 bps V.90
27 = 41,333 bps V.90
28 = 42,666 bps V.90
29 = 44,000 bps V.90
30 = 45,333 bps V.90
31 = 46,666 bps V.90
32 = 48,000 bps V.90
33 = 49,333 bps V.90
34 = 50,666 bps V.90
35 = 52,000 bps V.90
36 = 53,333 bps V.90
37 = 54,666 bps V.90
38 = 56,000 bps V.90
39 = 57,333 bps V.90 US Robotics X2-only:
14 = 28,800 bps V.34
15 = 31,200 bps V.34
16 = 33,600 bps V.34
17 = 28,800 bps X2
18 = 37,333 bps X2
19 = 41,333 bps X2
20 = 42,666 bps X2
21 = 44,000 bps X2
22 = 45,333 bps X2
23 = 46,666 bps X2
24 = 48,000 bps X2
25 = 49,333 bps X2
26 = 50,666 bps X2
27 = 52,000 bps X2
28 = 53,333 bps X2
29 = 54,666 bps X2
30 = 56,000 bps X2
31 = 57,333 bps X2

For example, if you want to tell your modem to connect somewhere between 28,800 and 52,000, just use the following init string:
AT&F1&N30&U14
If you still have trouble connecting, just reduce the &N value until you get solid performance.

Modems with Lucent Chipsets:
Lucent makes the chipset for the following modem manufacturers:
ActionTec
Multitech
Xircom
Zoom

These all support KFlex, and the newer models do V.90 too.

Some of these modems have trouble connecting, when they try to negotiate a speed higher than the line can handle.

The syntax for manual speed adjustments is different between KFlex and V.90 mode, however. We'll start with the V.90; if your modem supports only KFlex, just jump down to the KFlex section.

To check your Lucent V.90 modem, start by using this init string:
AT&FS38=0-V90=21
This sets your modem for a V.90 connection at a maximum of 53333 bps. ("AT&F" loads the factory settings. "S38=0" turns off KFlex. "-V90=21" sets the V.90 rate to 53333.)

If your connection is still choppy, start lowering the "-V90=" number one at a time, until you get a reliable connection. Here's the chart of "-V90" settings and corresponding speeds:

0 ..... disables V.90 (defaults to V.34)
1 ..... sets V.90 for "Auto Rate" (default)
2 ..... sets V.90 for 28000 bps
3 ..... sets V.90 for 29333 bps
4 ..... sets V.90 for 30666 bps
5 ..... sets V.90 for 32000 bps
6 ..... sets V.90 for 33333 bps
7 ..... sets V.90 for 34666 bps
8 ..... sets V.90 for 36000 bps
9 ..... sets V.90 for 37333 bps
10 .... sets V.90 for 38666 bps
11 .... sets V.90 for 40000 bps
12 .... sets V.90 for 41333 bps
13 .... sets V.90 for 42666 bps
14 .... sets V.90 for 44000 bps
15 .... sets V.90 for 45333 bps
16 .... sets V.90 for 46666 bps
17 .... sets V.90 for 48000 bps
18 .... sets V.90 for 49333 bps
19 .... sets V.90 for 50666 bps
20 .... sets V.90 for 52000 bps
21 .... sets V.90 for 53333 bps


Lucent modems with KFlex-only chipsets don't have a "-V90" setting, of course. For these modems, the S38 register controls the top speed.

If you have trouble maintaining a stable connection, start with this init string:
AT&FS38=12
This sets your modem to a maximum speed of 52 Kbps. If you still have trouble, just decrease that final number by 1 until the trouble disappears. (S38=11, 10, 9, etc.)

Here's the list of allowable settings for S38:

0 ..... disables KFlex (defaults to V.34)
1 ..... sets KFlex for "Auto Rate" (default)
2 ..... sets KFlex for 32 Kbps
3 ..... sets KFlex for 34 Kbps
4 ..... sets KFlex for 36 Kbps
5 ..... sets KFlex for 38 Kbps
6 ..... sets KFlex for 40 Kbps
7 ..... sets KFlex for 42 Kbps
8 ..... sets KFlex for 44 Kbps
9 ..... sets KFlex for 46 Kbps
10 .... sets KFlex for 48 Kbps
11 .... sets KFlex for 50 Kbps
12 .... sets KFlex for 52 Kbps
13 .... sets KFlex for 54 Kbps
14 .... sets KFlex for 56 Kbps


Modems with Rockwell Chipsets:
Rockwell makes chipsets for these brands:
Best Data
Boca
Creative Labs (DigiCom)
Diamond/Supra
Global Village
Hayes (Hayes, Practical Peripherals, Cardinal)
Maxtech
TDK
Viking
Xircom
Zoom
This chipset uses a different command set from the Lucent one. Both KFlex-only and V.90 speeds are controlled by the "+MS" command.

A sample init string for a Rockwell modem would be:
AT&F+MS=12,1,28000,56000

To break this down:
The AT&F sets the modem for factory defaults.
The +MS= activates the command for 56K protocol choosing and speed control.
The first number (a 12 in this case) tells the modem which protocol to use:
12 sets the modem to V.90 mode.
56 sets the modem to KFlex mode.
The second number should always be 1.
The third and fourth numbers dictate the lowest and highest allowed speeds. I recommend keeping the low speed at 28000.

If your connection is choppy, you can decrease the highest allowed speed until you get a reliable link every time.
Allowable speeds for a V.90 (type "12") setting:
28000, 29333, 30667, 31200, 32000, 33333, 33600, 34000, 34667, 36000, 37333, 38000, 38667, 40000, 41333, 42000, 42667, 44000, 45333, 46000, 46667, 48000, 49333, 50000, 50667, 52000, 53333, 54000, 54667, 56000.

Allowable speeds for a KFlex (type "56") setting:
28000, 30000, 32000, 34000, 36000, 38000, 40000, 42000, 44000, 46000, 48000, 50000, 52000, 54000, 56000.

© Copyright 1999, Public Access Networks Corporation

[email protected] | Last modified: July 22, 1999

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متاسفانه من تنضيمات مربوت به يك سري ماركاي خواسي از مودمارو دارم لينكشم بالاس
اگه كسي تنضيماي واسه راك ول يا كنكسانت داره بزاره ممنون ميشم

 

[ARMAN_PIER]

3Com/USR Modems:

The commands: &Un and &Nn (where n is a number between 0 and 39) control the connect speeds your modem will accept. &U control the lowest link speed, and &N controls the highest link speed. If you want to use this, add the appropriate &Un&Nn string in the 'extra settings' box of the Advanced Properties of your Modem from Control Panel. (See the graphic of 56k Troubleshooting page 1.) My extra settings (for 42.6k minimum connect) are: &U28&N39. IMPORTANT: If you use only &N, the modem will connect only at that speed, and if a connection cannot be achieved at that speed, you will get NO CARRIER. In most cases, you will want to set a speed range for acceptable connects using both &U &N.

I don't limit the highest connect speed - but you can: if you find that you get connects above 50k that are unreliable and error-prone, you can use the &Nn setting to limit the maximum speed.

Note: I have not been able to use this option reliably with x2 servers. It does work quite well for me with V.90. I suspect the reason is that with x2, I will regularly get CONNECTs at 48k that never go above 32k, while with V.90, my actual rate and connect speed are more accurate. 13-Dec-98: The command seems to be partially broken on USR/Sportster with new 5.0.0 firmware - see my 12/13 Update.

&U## - Lowest Link Speed
&N## - Highest Link Speed
Where ## is as follows:

Values for 3Com/USR/Sportster/Courier V.90 modems:
1= 300bps 2= 1200bps 3= 2400bps 4= 4800bps
5= 7200bps 6= 9600bps 7= 12000bps 8= 14400bps
9= 16800bps 10= 19200bps 11= 21600bps 12= 24000bps
13= 26400bps 14= 28800bps 15= 31200bps 16= 33600bps
17= 28000bps 18= 29333bps 19= 30666bps 20= 32000bps
21= 33333bps 22= 34666bps 23= 36000bps 24= 37333bps
25= 38666bps 26= 40000bps 27= 41333bps 28= 42666bps
29= 44000bps 30= 45333bps 31= 46666bps 32= 48000bps
33= 49333bps 34= 50666bps 35= 52000bps 36= 53333bps
37= 54666bps 38= 56000bps 39= 57333bps 0= No Limit

These are the possible values for n with a x2 (non-V.90) 3Com modem:
Values for 3Com/USR/Sportster/Courier x2-only modems:
0 = No Limit 1= 300bps 2= 1200bps 3= 2400bps
4= 4800bps 5= 7200bps 6= 9600bps 7= 12000bps
8= 14400bps 9= 16800bps 10= 19200bps 11= 21600bps
12= 24000bps 13= 26400bps 14= 28800bps 15= 31200bps
16= 33600bps 17= 33333bps 18= 37333bps 19= 41333bps
20= 42666bps 21= 44000bps 22= 45333bps 23= 46666bps
24= 48000bps 25= 49333bps 26= 50666bps 27= 52000bps
28= 53333bps 29= 54666bps 30= 56000bps 31= 57333bps
32= 64000bps

Also see: Other extra settings.
Rockwell / Conexant Modems:

The command format is:
+MS= <mod> [,[<automode>][,[<min_rate>][,[<max_rate>][,[<x_law>][,[< rb_signaling>]]]]]]<CR>
Newer [RCV-PLL] chipsets have another variation of the above command with an extra field at the end of above which I believe is maximum upstream rate.
except for HCF and Soft56 modems where the command format is:
+MS=<modulation>,<automode>,<min tx rate>,<max tx rate>,<min rx rate>,<max rx rate>

You can determine the format of the +MS command for your modem with the command:
AT +MS=? which returns all possible values for each field. The command AT +MS? will return the current settings for each field.

To limit the Rockwell-chipset (Conexant chipset) modem to a minimum of 44,000bps and a maximum of 52k, the following string would be entered in extra settings:

+MS=,,44000,52000 (non HCF)
+MS=,,,,44000,52000 (HCF)

Note: If you place any commands after the +MS= command, you must terminate the +MS portion with a semicolon - ie: +MS=12,0;s10=7

The preferred modulation can be selected by placing the following parameter before the first comma:
Modem V.90 K56Flex V.34 (no 56k)
Rockwell/Conexant Non-HCF 12 56 11
Rockwell/Conexant HCF V90 K56 V34

+MS=12,,44000,52000 (non HCF) - V.90 is preferred, connect min 44k, max 52k
+MS=V90,,,,44000,52000 (HCF) - +MS=V90,,,,44000,52000 (HCF) - V.90 is preferred, connect min 44k, max 52k

The default for automode - the second parameter - is 1 which will allow other than the selected modulation; to force V.90 in the prior example:

+MS=12,0,44000,52000 (non HCF) - V.90 is required, connect min 44k, max 52k
+MS=V90,0,,,44000,52000 (HCF) - V.90 is required, connect min 44k, max 52k

With some firmware versions, the commands may be broken, or not work correctly. See the auto-redial section.
Lucent/Agere Modems:

New Lucent/Agere AMR and softmodems do not support the -v90= commands in the table below. They will accept the +MS= modulation commands with format similar to Rockwell. The older Lucent product with later firmware will support both the commands below as well as the +MS= format. Agere modems, when set to connect at a 56k speed, will attempt that rate. If it fails, the modem will then attempt a V.34 connection. See the auto-redial section for more on how this behavior can be used to reject and re-dial lower-speed connections.

Lucent modems supporting +MS= ,except AMR & Softmodem, conform to following:
+MS=protocol, auto, 0, upstream limit, 0, downstream limit
where
protocol = V21,V22,V22B,V23,V32B,V34,V90,56K, or V92
auto = 0 or 1 - where 1 enables auto-protocol negotiation, 0 restricts protocol to specified value
upstream limit = 0 or valid rate between 300 and 33600; 0 = automatic
downstream limit = 0 or valid rate between 300 and 56000; 0 = automatic

AMR & SoftModems: +MS=protocol,auto,min dowstream, max downstream

The Lucent LT Win Modem (Apollo/Mars) flexibility for connect speed options as 3Com/USR and Rockwell/Conexant. It will either do autorate (default), or you can specify a single 56k speed to (try to) connect with. These commands also apply to V.92 connections as V.92 uses V.90 downstream:
AT-V90=# where # represents the 56k V.90 downstream rate:
0 - V.90 disabled 1 - Auto Rate 2 - 28000 3 - 29333
4 - 30666 5 - 32000 6 - 33333 7 - 34666
8 - 36000 9 - 37333 10 - 38666 11 - 40000
12 - 41333 13 - 42666 14 - 44000 15 - 45333
16 - 46666 17 - 48000 18 - 49333 19 - 50666
20 - 52000 21 - 53333 22 - 54666* 23 - 56000*

* - -v90=22 & 23 valid only with firmware 5.49 and higher.
The following commands are implemented on both the Lucent Apollo/Mars (LT Win Modem) and Venus (external/PCMCIA/int) modems:
S38=# where # disables or selects the KFlex downstream rate:
0 - disable Flex 1 - Auto Rate 2 - 32k 3 - 34k
4 - 36k 5 - 38k 6 - 40k 7 - 42k
8 - 44k 9 - 46k 10 - 48k 11 - 50k
12 - 52k 13 - 54k
s37=# where # controls the upstream rate:
0 - Maximum 3 - 300bps 5 - 1200bps 6 - 2400bps
7 - 4800bps 8 - 7200bps 9 - 9600bps 11 - 14400bps
13 - 19200bps 14 - 21600bps 15 - 24000bps 16 - 26400bps
17 - 28800bps 18 - 31200bps 19 - 33600bps

NOTE: With the Venus chipset, s38=# controls both the KFlex and V.90 downstream rate; the KFlex/V.90 preference is set as follows:

S109=# 0=Disable V90 (Flex only)
1=auto select V.90/KFlex
2=Disable KFlex (V90 only)

For the VENUS chipset, s38=# has different meaning for a V.90 connection:
S38=# where # disables or selects the V.90 downstream rate for VENUS chipset:
0 - disable V.90 1 - Auto Rate 2 - 28k 3 - 29.3k
4 - 30.6k 5 - 32k 6 - 33.3k 7 - 34.6k
8 - 36k 9 - 37.3k 10 - 38.6k 11 - 40k
12 - 41.3k 13 - 42.6k 14 - 44k 15 - 45.3k
16 - 46.6k 17 - 48k 18 - 49.3k 19 - 50.6k
20 - 52k 21 - 53.3k 22 - 54.6k 23 - 56k

Also see: Other extra settings.
Motorola SM56 Modems:
SM56 modems are K56Flex and V.90 capable; To limit the speed, put %B# in extra settings where # is as follows:
%B0 - Max Rate %B1 - 300bps %B2 - 1200bps %B3 - 2400bps
%B4 - 4800bps %B6 - 9600bps %B9 - 14400bps %B11- 16800bps
%B12- 19200bps %B13- 21600bps %B14- 24000bps %B15- 26400bps
%B16- 28800bps %B17- 31200bps %B18- 33600bps %B19- 32000bps
%B20- 34000bps F %B21- 36000bps %B22- 38000bps F %B23- 40000bps
%B24- 42000bps F %B25- 44000bps %B26- 46000bps F %B27- 48000bps
%B28- 50000bps F %B29- 52000bps %B30- 54000bps F %B31- 56000bps
%B32- 58000bps F %B33- 60000bps %B34- 28000bps %B35- 29333bps
%B36- 30666bps %B37- 33333bps %B38- 34666bps %B39- 37333bps
%B40- 38666bps %B41- 41333bps %B42- 42666bps %B43- 45333bps
%B44- 46666bps %B45- 49333bps %B46- 50666bps %B47- 53333bps
%B48- 54666bps
F-These rates are valid only for K56Flex connections
Rates specified by %B34 through %B48 are valid only for V.90 connects.

Special Thanks to Phillip Julias IV for supplying this Motorola SM56 info.

PC Tel Chipset

To limit the speed on PCTel modems, you must select either V.90 (n0s37=14) or K56Flex (n0s37=13) along with the speed limit s34=# where # is as follows:
For V.90 - n0s37=14s34=# where # is:
0 = 28000bps 1 = 29333bps 2 = 30666bps 3 = 32000bps
4 = 33333bps 5 = 34666bps 6 = 36000bps 7 = 37333bps
8 = 38666bps 9 = 40000bps 10 = 41333bps 11 = 42666bps
12 = 44000bps 13 = 45333bps 14 = 46666bps 15 = 48000bps
16 = 49333bps 17 = 50666bps 18 = 52000bps 19 = 53333bps
20 = 54666bps 21 = 56000bps
For K56Flex - n0s37=13s34=#:
0 = 32000bps 1 = 34000bps 2 = 36000bps 3 = 38000bps
4 = 40000bps 5 = 42000bps 6 = 44000bps 7 = 46000bps
8 = 48000bps 9 = 50000bps 10 = 52000bps 11 = 54000bps
12 = 56000bps
Note: If the PCTel modem is unable to achieve the rate specified, it will connect at the next lower rate which can be achieved.

Special Thanks to Phillip Julias IV for supplying this PCTel info.
Cirrus/Ambient Modems:

Cirrus Logic spun off its modem chipset business to Ambient Technologies. Ambient makes chipsets, not modems, and like Rockwell/Conexant has very poor support and documentation available from its website. While AT command documentation (in .pdf format) is on the web-site, the all-important SPEED LIMIT commands are not included in the Ambient/Cirrus documentation!

A variation of the +MS= command is used in Cirrus/Ambient modems to select protocol as well as speed limits. Cirrus/Ambient makes a number of different chipsets with different capabilities, and the parameters for +MS= vary among the products.

The command AT +MS=? will return the possible values for each of the fields in the command; the following comes from a MD5620:

at+ms=?
+MS:
(BELL103,BELL212,V21,V23,V22,V22B,V32,V32B,V34,V34S,X2,V90), (0,1),(0,300-33600),(0,300-33600),(0,2400-33600),(0,2400-57600)

Cirrus/Ambient makes a controller-based x2/V.90 modem chipset (MD565X) for ISA and external configurations which uses this command format:

+MS= <carrier>, <automode>, <min rate>, <max rate>, <min rx rate>, <max rxrate>

<carrier> = Modulation type
<automode> = 0 or 1; 1= enable or 0=disable automatic rate negotiation to obtain highest rate possible
<min rate> <max rate> = 0 for automatic or valid rates from 300-33600 for non 56k-connect, or upstream on 56k connect
<min rx rate> <max rxrate> = 0 for automatic, or valid rates from up to 33.6k for minimum, and 53.3k for maximum.

Cirrus/Ambient also makes:
MD57xx - single-chip integrated DSP and controller
MD566x - to replace MD565X - eliminates need for SRAM in modem circuitry
MD567x - Mac & Windows USB chipset
VIA Chipset Modems:
Via Chipset Modems implement the same MAXIMUM link speed command as Motorola SM56 Modems; The MINIMUM speed uses the same # values with %L##
%B0 - Max Rate %B1 - 300bps %B2 - 1200bps %B3 - 2400bps
%B4 - 4800bps %B6 - 9600bps %B9 - 14400bps %B11- 16800bps
%B12- 19200bps %B13- 21600bps %B14- 24000bps %B15- 26400bps
%B16- 28800bps %B17- 31200bps %B18- 33600bps %B19- 32000bps
%B20- 34000bps F %B21- 36000bps %B22- 38000bps F %B23- 40000bps
%B24- 42000bps F %B25- 44000bps %B26- 46000bps F %B27- 48000bps
%B28- 50000bps F %B29- 52000bps %B30- 54000bps F %B31- 56000bps
%B32- 58000bps F %B33- 60000bps %B34- 28000bps %B35- 29333bps
%B36- 30666bps %B37- 33333bps %B38- 34666bps %B39- 37333bps
%B40- 38666bps %B41- 41333bps %B42- 42666bps %B43- 45333bps
%B44- 46666bps %B45- 49333bps %B46- 50666bps %B47- 53333bps
%B48- 54666bps
F-These rates are valid only for K56Flex connections
Rates specified by %B34 through %B48 are valid only for V.90 connects.

VIA Chipset compression commands: %C0 = Compression disabled; %C1 - Enable Compression
\N Error-Correction Mode
\N0 Normal
\N1 Direct
\N4 LAP-M Only
\N6 Reliable
\N7 Auto-Reliable
ESS Teledrive Modems:

Modems with the ESS chipset (Teledrive) use the +MS= command to control modulation and minimum/maximum connect speeds:

+MS= protocol,automode,minspeed,maxspeed
+MS= 17,0,40000,44000

where minspeed and maxspeed are valid rates between 300 and 57333bps.
In the example above, 17 is the code to specify V.90 modulation, and the zero disables automode which will prevent the modem from connecting if V.90 cannot be achieved.

Valid values for protocol include:
0 = V.21 (300bps) 1 = V.22 (1200bps) 2 = V.22bis (2400bps)
9 = V.32 (9600bps) 10 = V.32bis (14.4k) 11 = V.34 (33.6k)
17=V.90 64 = Bell 103 (300bps)
Broadcom BCM Modems:

Modems with the Broadcom BCM chipset use 2 S-registers to control maximum rate. S61 controls the maximum 56k downstream rate (V.90 or x2), and S37 controls the maximum upstream rate. If no 56k connection is obtained, S37 controls both the upstream and downstream maximums:
To control maximum downstream rate, set S61=# where # is the value indicated below
0 - No Limit (default) 3 - 28000bps 4 - 29333bps 5 - 30666bps
6 - 32000bps 7 - 33333bps 8 - 34666bps 9 - 36000bps
10 - 37333bps 11 - 38666bps 12 - 40000bps 13 - 41333bps
14 - 42666bps 15 - 44000bps 16 - 45333bps 17 - 46666bps
18 - 48000bps 19 - 49333bps 20 - 51333bps 21 - 52000bps
22 - 53333bps
To control maximum upstream rate, set S37=# where # is the value indicated below
0 - No Limit (default) 1 - 300bps 5 - 1200bps 6 - 2400bps
8 - 4800bps 9 - 9600bps 10 - 12000bps 11 - 14400bps
12 - 7200bps 13 - 16800bps 14 - 19200bps 15 - 21600bps
16 - 24000bps 17 - 26400bps 18 - 28800bps 19 - 31200bps
20 - 33600bps
Smartlink Modems:

Modems with Smartlink chipsets use the +MS= command to control modulation and minimum/maximum connect speeds:

+MS= protocol,automode,minspeed,maxspeed
+MS= 90,1,300,56000 (default)
TOPIC Chipset Modems:

The TOPIC Chipset allows user to specify a maximum connection rate (not a range of rates) by using the *i# command; the limit selected depends upon whether the modem is set for PCM (V.90) or not:
To control maximum speed for V.34 & lower connection protocols use: *i# where # is:
0 - 1200 bps 1 - 2400bps 2 - 4800bps 3 - 7200bps
4 - 9600 bps 5 - 12000bps 6 - 14400bps 7 - 16800bps
8 - 19200bps 9 - 21600bps 10 - 24000bps 11 - 26400bps
12 - 28800bps 13 - 31200bps 14 - 33600bps 19 - 31200bps
20 - 33600bps
To control maximum speed for V.90 (PCM) connection protocol use: *i# where # is:
1 - 28000bps 2 - 29333bps 3 - 30666bps 4 - 32000bps
5 - 33333bps 6 - 34666bps 7 - 36000bps 8 - 37333bps
9 - 38666bps 10 - 40000bps 11 - 41333bps 12 - 42666bps
13 - 44000bps 14 - 45333bps 15 - 46666bps 16 - 48000bps
17 - 49333bps 18 - 50666bps 19 - 52000bps 20 - 53333bps
21 - 54666bps 22 - 56000bps


Rockwell & Lucent Modems - Autoredial:

Jim Bell found a solution to allow auto re-dial with Lucent modems (that lack effective speed range commands) and some Rockwell V90 firmware where the +MS command is 'broken':

1. First, find the highest speed at which your modem connects and gives stable connections. If your modem speed varies, this should be done only after numerous logons to your ISP.

2. In Dial Up Networking, Click "Connections" and then "settings". Check the Redial box. Under this change "Before giving up retry" to 50 times. Press "OK".

3. In Dial-Up Networking, right click your internet connectiod and hit properties. Under your modem listing, hit "Configure". Set Maximum Speed to 115200. Select the Connection tab. Hit "Advanced". Change your modem speed by adding the following command in the Extra Settings box:

Rockwell Modems (except HCF): +MS=12,1,xxxxx,56000
where xxxxx is the maximum speed where you get a stable connection, e.g. 49333 or 52000
Note that 12 is used for V.90 modems. Change this to 56 for flex connections. (NOTE: If your modem is connecting at too high a speed - ie, high error, unstable connection, limit the maximum speed by replacing the 56000 with a lower V90 speed.)

Rockwell HCF Modems: +MS=V90,1, <min tx rate>, <max tx rate>, <min rx rate>, <max rx rate>
you can specify minimum and maximum values for both receive & transmit rates; to limit the receive rate to 42-48k with no other limits: +MS=V90,1,,,42000,48000

Lucent Modems: -V90=# or S38=# or +MS=
Find the appropriate selection for # in the Lucent section above.

Hit "OK", "OK", and "OK".

4. Engage your internet connection. After hitting "Connect", listen to the modem dial and pay attention to the handshaking sequence. If your modem does not reach the desired speed, you will hear it begin another handshaking sequence. Time the seconds it takes between hitting the "Connect" button and the second handshaking sequence. Add 2 to 3 seconds to this time.
In Dial-Up Networking, again right click your internet connection and select "Properties" and "Configure". Select the "Connection" tab. Check the box next to "Cancel the call if not connected within xx seconds" and change the xx to the above number you observed when listening to your modem. Hit "OK" and "OK" and try reconnecting. If you can't find this setting in your version of Windows, you can also set the time via your init string: s7=## where ## is the time in seconds to allow the modem to complete handshake.
Your modem should now redial until it gets the rate you specified. Be sure to listen when the modem cuts off before redialing to make sure that a second handshaking sequence begins. If it quits too soon, adjust the seconds upwards.
Also note that adjusting your extra settings box will affect dialing in Hyperterminal. If you connect to other modems using Hyperterminal which are slower, hit "Cancel" at the dialing prompt, and then Enter. Issue the command to reset your modem (atz in Rockwell modems) and dial manually (e.g. atdt5551212).

 

[ARMAN_PIER]

با كمي گشتن اينارو پيدا كردم ولي من اينارو نميحواستم
من در واقع تن ضيماتيرو ميخوام كه مودم رو از قطع كردن ارتباط منع كنه
يعني بعد از قطع ارتباظ(مثلا تا 5 ثانيه) مودم سند كنه تا بهش ديتا برسه
با اين كار احتمال قطع شدن به صفر ميرسه
نه؟

 

[ARMAN_PIER]

به اين سايت سر بزنيد
http://www.modemsite.com/56k/trouble.asp

 

[ARMAN_PIER]

اين سايت هم كمكيه



http://www.chasms.com/Mtips.htm
http://home.starwon.com.au/default.asp?id=7&mnu=7

 

[ARMAN_PIER]

http://www.56k.com/trouble/disconn.shtml

 

[ARMAN_PIER]

Modem

There can be many reasons for disconnections or ‘drop outs’. The following is a list of some of the things that you can check if you are experiencing an unacceptable number of drop-outs:

Call Waiting

Do you have call waiting enabled on your phone line? If you do (and you may have even if you don’t know it!), and somebody tries to phone you, that will disconnect your modem. Before you dial with your modem, disable call waiting (using your normal phone) with #43#. To re-enable call waiting again later on, use *43#. Refer to the current Telstra White Pages for more information.

Faulty or Unplugged Cables

The cable from your modem to the telephone plug or the cable from your modem to your computer (if you have an external modem) may be unplugged or faulty. Check for signs of wear, broken pins in the plugs or damaged connectors. Try replacing these with spares if you have them available.

Old Modem

Your modem may be faulty. Intermittent performance is a sign that it may be time to upgrade to a newer, faster modem.

Other Devices

Some devices connected to the same phone line can cause your modem to disconnect. Try disconnecting any fax machines, answering machines, cordless phones, other phones from the line and see if that helps. Long telephone extension leads between your modem and phone connector can also cause problems. Of particular note is the Telecom T200 Touchphone, if you have one of these phones, disconnect it – they are well known for causing problems.

Misconfigured Communications Software

The software your computer uses to dial up and communicate on the internet is Dial-Up Networking and TCP/IP. Check via the control panel that you have both these installed and correctly configured. Our support staff can advise you on the correct settings if need be.

Wrong Modem Driver

Every modem has an associated piece of software needed to run it, called a driver. You should always load the correct driver for your modem when installing. Modem manufactures often release updated driver files for their modems which can significantly improve their performance. Check the home page of you modem manufacturer to see if there is a new driver available. Manufacturers also release what are known as Firmware upgrades which load new code into your modem chip. Be sure to follow the manufacturers instructions very carefully when upgrading your firmware, you can damage your modem if you are not careful!

Modem too fast

Although everyone wants the fastest connection to the Internet they can get, sometimes this can work against you. Any network connection is a trade-off between speed and stability. Many users of 56k modems experience some problems either connecting, or maintaining decent speeds while connected. This is more often than not caused by your modem trying to connect and ‘talk’ at a speed too fast for your phone line to handle. If your modem is communicating too fast for your computer to handle, it may spend so long waiting to deliver the data it has that it will disconnect the call. Telstra say their phone lines are only rated to carry data at 4800bps (bits per second). It’s not surprising that phone lines can cause problems when data speeds reaching 56000bps are attempted! Initialisation strings (see below) can reduce the speed of your connection thus delivering greater stability (and less phone calls!). Fortunately, most phone lines are capable of carrying data at speeds of 33600bps, and some people are even able to maintain stable connections up to 46000bps. What we can do is ‘lock’ the modem to a speed that your phone line can handle. Determining what speed your phone line can handle is a ‘trial-and-error’ process, and is set via an initialisation string to your modem. You can also try setting an initialisation string for your modem that includes a longer lost carrier to hang up delay. Information on how to do this should be included in your modem instruction manual, however the setting of s10=200 should work for most.

Setting an initialisation string
Double-Click on My Computer
Double-Click on Control Panel
Double-Click on Modems

You should see your modem listed within the modem screen.

Make sure your modem is highlighted and click on Properties

Select the Connection tab up the top

Click the Advanced button down the bottom

Down the bottom of the advanced screen is a space labeled ‘Extra Settings’. This is where we set the initialisation string.

Which initialisation string we use is dependent on your particular brand and model of modem, however the following generic initialisation string combination works for most modems:

To connect at (older) K56Flex protocol:

s10=200+ms=56,1,300,xxxxx

Or for V.90 modems:

s10=200+ms=12,1,300,xxxxx

Where xxxxx is the speed you wish to lock the modem at – this has to be multiple of 2000 for K56Flex, or 1333 for V.90.

Eg: s10=200+ms=56,1,300,42000

s10=200+ms=12,1,300,41333

If you have tried down to 34000 and you are still having problems, try the following:

s10=200+ms=11,1,300,33600

This last string will turn off the 56k protocols altogether, and leave you with the more stable V.34 protocol.

Whenever you try a new string, be sure to OK your way out of all the configuration screens, and log off from Starwon and reconnect again for the change to take effect.

 

[POLBADMAN]

من هم برای مودم PATTON میخوام مرسی

 

[ARMAN_PIER]

من برات نتو نستم پيداكنم

 

[mazoolagh]

در اين قسمت ميتوانيم تنضيمات بخصوصي بكنيم مثلا اينكه مودم تا 5 ثانيه پس از قطع ارتبات سند كنه و قطع نشه
ولي من بلد نيستم

دقیقا منظورت چیه؟