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Modem Initialization Strings
(These strings have
been proven to work with ASCEND MAX & TNT Routers)
My
Computer | DUN | Junctionbox Properties | Configure
|
Connection | Advanced | Extra Settings...
First, before you try any of the initialization strings below, it
is advisable that you know what brand and model modem you have AND that
you have the latest driver for your modem. Do not let Windows
automatically install software for it. These Windows drivers are probably
out of date. Use the software that came with the modem. Then go online to
your modem's manufacturer web site and be sure you have the latest
firmware revision. This is very important!
Second, we have found
that for many nondescript modems (modems not mentioned on this page) and
the diamond supramax modem, that using ATZ works well. If you are
receiving the error "The computer you are dialing is not answering" or it
is taking multiple times to connect, the ATZ string will work. So, if you
have a modem not mentioned on this page, a Diamond SupraFax modem, or you
can't find the name of your modem, try using ATZ.
The strings themselves
are all case sensitive. All letters within the strings need to be
in UPPER CASE, unless otherwise noted. Feel free to try as many as you
like. Sometimes it takes trying a few to find the one that works best with
your particular modem. If your modem is not on the list below, check out
the other init. string links at the bottom of this page.
To add
an initialization string to your modem, follow the instructions
below.
- Double-click My Computer > Control Panel >
Modems
- Hilight
your modem and click Properties (NOT dialing properties)
- Click the
Connection tab
- Click the
Advanced button
- There is a
field at the bottom called Extra Settings
Type in the
initialization string on this line. Be sure to click OK at every screen.
Then retry the connection.
| For All
Rockwell Chipset Based Modems, try the strings in this table
first. |
| CONNECTION |
INITIALIZATION STRING |
| V.90 preferred (K56flex will still
work) |
+MS=12,1 |
| V.90 only, K56flex and V.34 disabled |
+MS=12,1,34667,56000 |
| K56flex preferred (V.90 will still
work) |
+MS=56,1 |
| K56flex only, V.90 and V.34 disabled |
+MS=56,1,34000,56000 |
| Disable V.90 and K56flex, use V.34
(28.8/33.6) |
+MS=11,1
+MS=11,0
+MS=V34 |
| For 3COM/USR
modems, try the strings in this table first. |
| MODEM |
x2 off, V.90 on |
Both off |
Both on * |
| Sportster ** (and all other USR
modems) |
S32=34 |
S32=98 |
S32=2 |
| Courier |
S58=1 |
S58=33 |
S58=0 |
| * Using
AT&F1 in the init. string automatically enables both
protocols |
| ** Non-U.S.
Robotics modems that use x2 generally respond to the same commands
as the sportster |
| For All Other
Modems, try the strings in this table. |
| MODEM |
INITIALIZATION STRING |
| LT Win
Modem |
-v90=0 (try this string first)
S38=0 (Try lowering
connect speed to 38,400)
S38=0-v90=0
S38=0s109=0 |
| HCF
Modem |
+MS=K56,0
(try
this string first)
at&c1%c0x3
+MS=V90,0
+MS=V34
AT+ms=,,,,,41333 (Commas will
limit connect speed to eliminate the agressive retrain
problem)
AT+ms=V34 (if above
string does not work) |
| PCTel HSP
Modem |
n0s37=13
(forces a Kflex connection)
n0s37=12
(forces a V.34 connection) |
| V.90 Modems
(generic) |
AT&F1&B1&D2&H1&I0&K1&M4S7=60 |
| Viking V.90
Modems |
AT&FWZ+MS=12,1
+MS=11,1 |
All 56K Flex
Modems
(Also works with K56 K1FX SPC int. spkr. phone
modem - use country code in DUN) |
AT&F&C1&D2&K3&W1
AT&F2&W2S202=32
&F2W2S202=32 |
| 3Com Sierra
Modem |
AT&F |
| 3Com USR Win
Modem |
S32=16
S25=10
S12=0
AT&F1&B1&D2&H1&I0&K1&M4S7=60
ATF&F1E0Q0V1&C1&D2S0=0ATS7=120S19=15L2&M4&K1&H1&R2&I0B0X4
AT&F1&C1 |
| 3Com Win
Modem |
&FW |
| 56k USR
Sportster |
S32=16
S25=10
S12=0
AT&F1&B1&D2&H1&I0&K1&M4S7=60 |
| Cyrrus Logic
56K |
AT+MS=V34B,1,300
S32=16
S25=10
S12=0
AT&F1&B1&D2&H1&I0&K1&M4S7=60 |
| All USR
Sportster |
AT&H1&R2&I0
AT&FX4&B1&C1&D2&H1&K3&R2
S12=0
AT&F1&B1&D2&H1&I0&K1&M4S7=60 |
| USR Sportster
28.8 Modem |
AT&FX4&A3&B1&D2&H1&I0&K1&M4S7=60 |
| USR Sportster
28.8-33.6 Modem |
AT&F1&B1&D2&H1&I0&K1&M4S13=1S27=48 |
| USR Sportster
Voice 33.6 FAX |
AT&F&C1&D2&K1&H1S7=60 |
| USR 33.6
Internal Non-voice |
AT&F1S0=0S7=90E1V&KO&I0S33=32 |
| Zoom
56Kflex |
AT
S202=32
AT&F1W2
AT&FW2S202=32 |
| All Zoltrix
Modems |
AT&F&C1&D2 |
| Hayes
Accura |
AT&F2&D2&C1 |
| Viva
Modem |
AT&F2&D2&C1 |
| Lucent V90
Modem |
AT&FX&C1&D2S95=1(space)S11=50(space)S38=0-v90=0
|
GENERIC:
Any Modem |
AT&F
AT&F1
AT&F&C1&D2
AT&F1&C1&D2
ATZ
AT&F&C1&D2
AT&F1
S15=128 |
GENERIC
28.8 - 33.6 |
AT&F&C1&D2S7=60
AT&F0&C1&D2&K3
AT&F1
AT&F1S27=32
AT&F1S32=16
AT&F1S33=32
AT&F1S27=32S33=32 |
| MWave
Modem |
AT&F&C1&D2S7=60 |
| Aptiva 28.8
Dat/FAX |
AT&F&C1&D2S7=60 |
| MAC
Users |
AT&F1&D0S27=32 |
| Aspen 33.6
Modem |
AT&FX4&C1&D2E1 |
| Thunderlink
Modem |
AT&F |
If your modem
hangs up
between 1-15 minutes
(any
modem) |
S15=128
S25=10
S12=0 |
If you have
Personal Secretary as your anwering machine
(any
modem) |
ATS6=6 |
| ISDN TERMINAL ADAPTER |
INITIALIZATION STRING |
| Motorola Bit
Surfer Pro (external) |
AT&F%A2=95%A4=0@B0=2
AT&F&C1&D2Q3%A2=95@B0=2
AT&F1&C1&D2@B0=2%A4=1
AT&F1W1&C1&D3@B0=1%A4=0%A2=95 |
| 3COM
IMPACT |
ATS60=64S70=0S80=0 |
OTHER INIT. STRING & MODEM LINKS
Modem Help dot org -
Excellent init. string resource
Ask Mr. Modem
Jay's Page of Init.
Strings
More Modem
Strings Here
A Juno
Modem Config. Page
Giant List of Modem
Manufacturers
Disconnects,
Slow Speeds and General Help
Everything You Wanted To Know About
Modems...
Curt's High Speed Modem Page
- Recommended!
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| Comments: Webmaster@junctionbox.net |
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Last updated 04/26/04, 9:30 P.M.,
EST | | |
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