| Manufacturer |
Initialization
String(s) |
Additonal
Information |
| Lucent
AMR |
+MS=V34
(Disables V.90) |
Uses
the AMR interface. Note: Lucent has renamed itself Agere
recently. |
| Lucent
Venus |
S38=0
(Disable K-Flex)
S109=0 (Disables V.90)
S109=2 (Disables X2)
/N2 (Disable V.42) |
Note:
Lucent has renamed itself Agere
recently. |
| LT
Win or Lucent Winmodem (Mars or Apollo LT Chipset) |
-V90=0
(Disables V.90)
S38=0 (Disables K-Flex)
S37=0 (Sets up stream rate to default)
/N2 (Disable V.42) |
Help sites: 56k.com,
8080hi.com, &
Vendor List.
To install the latest modem
drivers, have the customer download this file: Modem600.exe.
Then double click on file, select extract (it might extract automaticaly), then
OK. The driver will automaticaly remove the old modem profile, update the Windows
driver database with new Lucent driver, and then search for new modems. This works
with most LT modems.
Note: Modem may be renamed
to Lucent Modem from LT Winmodem. Make sure to update DUN settings for dialer.
To see if a modem is Lucent
based look for ltmodem.vxd in the /windows/system directory (Note: This will NOT
show up in a file search, you must open of the directory and set Explorer to show
all files in order to locate it.).
Note: Lucent has renamed itself Agere
recently.
|
| Maestro
Jetstream External K56 |
+MS=56,1,300,40000 |
|
| Micromodem
(56 HSP) |
See
PcTel for more info. |
|
| Micron
X2 |
AT&F1&K0&I0S33=325S15=128S27=64 |
|
| Motorola
SM56 |
*MM0
(Disables V90) |
HSP
based modem. Frequent disconnect problems. Read
this article from Motorola for more information. There is also a variant of
the SM56 called SM56
AC-L. This is a AMR modem that uses the AC
Link chip set. It too shares many of the same connection issues as the SM56.
|
MDP3900
(latest shipped model)
MDP3858 (older version of 3900)
MDxxxxx (generic Conexant) |
First:
+MS=V90 or +MS=V90, 0
(disables K-Flex and sets to v.90)
If not then: +MS=V34 (sets v.34)
MDP 3858 SP Modem (Packard-Bell):
+ms=V90,1,75,33600,75,40000 |
Dell
is aware of problems with this modem. All modems under warranty are to be exchanged
for USR modems of equal value. The site for driver updates
is here.
Latest drivers are listed to the left of this box with their respective versions,
release date, and operating system. The chipset is Rockwell
HCF and will respond to that command set. The actual board is made by Aztech.
3900 - Athen_98.exe (win98) 1/13/00 Version: 2.1.2.162.009.004
3858 - DD1196D.exe (win9x) 3/14/99 Version: 2.1.2.156 |
| MDP
(Lucent Chipset) |
-V90=0
(turns off v.90) |
A
variant of MDP that uses Lucent Mars instead of Conexant chipset
commands. The actual board is made by Aztech. |
| MSP |
+MS=V34 |
This
modem is made by Aztech. It shares the same poor connection
issues as other Mxx type modems listed above. |
| MWave
(IBM Aptiva) |
-SSE1
%C (Disable V.42bis/MNP 5)
\N3 (Disable V.42)
\N5 (Disable MNP)
Control Connection Speed:
S28=18 for 26.4Kbps
S28=17 for 24.0Kbps
S28=16 for 21.6Kbps
S28=15 for 19.2Kbps |
IBM
at last
press release was embroiled in a lawsuit over this modem. Customers have frequent
complaints about connection failures, hardware issues, and other problems. A lot
of modem issues can be solved by downloading the APMWDIAG.EXE from IBM. This corrects
most driver issues. The init string AT&F&D3\N5\Q3&K3 is said to work well.
IBM
MWave FAQ.
MWave problems.
Notes to Help with
MWave.
MWave
Drivers. |
| NEC |
-V90=0 |
As
the parent company of now bankrupt Packard Bell, NEC is handling all warrantied
technical support for the Packard Bell. |
| Netcruiser
56000 External Data/Fax/Voice Modem |
+MS=(11,12,56),1,300,40000 |
|
| Newcom
(Atlas) |
56K
Internal: S32=34 (disable X2)
-Use USR commands |
Out
of business. No drivers or support other then provided on Windrivers.com. The
56K internal/external modems are US Robotics chip set modems with Rockwell produced
chips. All AT commands are based on the USR chip sets. Lots of reports of poor
connections etc... |
| Packard
Bell Sound 3 or 4 |
Generic Init: AT&F1&C1X4
Sound3: V.34 modem with speeds varying between 14.4k, 28.8k, and 33.6k
chipsets variations.
Sound4: &C1&H3&A2&D2&K3S10=255
(Disable V.90)
Note: Some Sound4 were made by Aztec and use a US
Robotics chipset. For those modems use:
S32=34 (Disable V.90/X2).
As NEC has become the parent
company of Pack-Bell some NEC PCs are showing up with Sound4 modems installed.
|
Packard
Bell is now in bankruptcy. All technical support for clients still under warranty
should be done through the parent company NEC.
All other legacy products are without support except that listed on the Packard
Bell web site. |
| PCI
based software modem. |
|
Most
generic PCI based software modems are Rockwell chipset,
but some use the Lucent chipset. There is no such thing as an
ISA software modem. Software modems do not have controllers and rely on a Windows
MMX compatible CPU to handle modem functions such as ECC etc... |
| PC
Tel (HSP Chipset) |
N0S37=14
(forces V90)
N0S37=12 (disables V90) |
See
HSP modem issues. Here
is another informative article from Zoltix that also talks about HSPs including
init strings. Generic drivers from PCTel can be found here.
PCTel's offical FAQ is here. |
Psion
Dacom Global Goldcard
(V.90 56K) |
+MS=11,1,2400,33600
(Uses Hayes commands) |
|
| Riptide
(Audio/Modem Combo) |
|
Drivers
can be found here.
Lots of know issues such as connectivity, error control, and other issues that
result in poor (if any) connections. Software based modem made by Rockwell,
but with OEM support from the PC vendor. |
| Rockwell
HCF or Soft56k (Conexant Chipset) |
+MS=V34
(disables V90)
+MS=V90 (forces V90)
S95=1 is supposed fix fix issues with connecting, slow connections, slow transfer
rates, and hang ups. |
Rockwell
renamed itself Conexant, but the chipset commands
are still the same as before. Their modems come under several names, but all use
the same strings. Some names are Soft56K and HCF. For a list of Rockwell chip
modems by vendor check here.
|
| Rockwell
Dual (Conexant based chipset) |
AT+MS=56
(Disables V.90)
AT+MS=12 (Disables Kflex)
AT+MS=11 (Disables V.90 and Kflex) |
|
| Rockwell
Generic Chipset (Conexant Chipset) |
+MS=V34
(disable v90) or
+MS=11,1 (disable v90)
Rockwell RCV288 and ACF modem: at+a8e=,,,1
+ES=1,0,1; (disable v42)
Q6 (disable v.42)
S95=1 (report port speed) |
Rockwell renamed itself Conexant, but the chipset
commands are still the same as before. Their modems come under several names,
but all use the same strings. Some names are Soft56K and HCF. For a list of Rockwell
chip modems by vendor check here.
|
| Sound
3/4 |
See
Packard Bell. |
|
| Supra |
See modem manufacturer listing: Diamond. |
|
| Teledrive |
ESS
Modem Chipset. See ESS. |
|
| Telepath
(X2 Winmodem) |
S32=34
(v.90 on, X2 off; using V.34)
Use US Robotics strings (see USR). |
Uses
US Robotics chipset. |
| 3Com |
See
US Robotics |
|
| 21st
Century 56k Modem |
+MS=56,1,300,40000 |
|
